00792nas a2200169 4500008004100000245019200041210006900233260004400302100002400346700001900370700002900389700001500418700001900433700002200452700002500474856012300499 2006 eng d00aPoly(High Internal Phase Emulsion) of 2-EHA, 2-EHMA and EGDA with naturally occurring phenolic compounds", paper presented at international conference on ?polymers for advanced technology0 aPolyHigh Internal Phase Emulsion of 2EHA 2EHMA and EGDA with nat aNational Chemical Laboratory, PunecDEC1 aIngavle, Ganesh, C.1 aShaikh, A., A.1 aBhongale, Sunil, Sitaram1 aScaria, S.1 aChavan, Nayaku1 aQureshi, Mohammed1 aPonrathnam, Surendra uhttps://library.ncl.res.in/content/polyhigh-internal-phase-emulsion-2-eha-2-ehma-and-egda-naturally-occurring-phenolic02176nas a2200253 4500008004100000022001400041245009300055210006900148260006700217300001400284490000800298520119700306653005201503653004401555653002301599653003001622653003701652653001401689100002801703700002401731700002301755700001901778856012501797 2006 eng d a0021-899500aSynthesis and characterization of cholesteric thermotropic liquid crystalline polyesters0 aSynthesis and characterization of cholesteric thermotropic liqui a111 RIVER ST, HOBOKEN 07030-5774, NJ USAbWILEY-BLACKWELLcJAN a1232-12370 v1033 a

Cholesteric liquid crystalline polyesters were successfully synthesized from isosorbide, methyl hydroquinone, and isophthaloyl chloride. Homo/copolyesters were synthesized by the solution polycondensation method, for which a mild organic base such as pyridine was employed. Inherent viscosities of polyesters P-3-P-5 were in the range of 0.31-0.39 dL/g at 25 degrees C in chloroform, and polyesters P-1 and P-2 were insoluble in chloroform. Homo/copolyesters based on isosorbide, methyl hydroquinone, and isophthalic acid had thermal stability at more than 300 degrees C on the basis of 10% weight loss. The thermotropic liquid crystalline properties were examined by differential scanning calorimetry and polarizing optical microscopy. Wide-angle X-ray diffraction study demonstrated that polyesters P-1, P-2, and P-3 were semicrystalline, whereas the degree of crystallinity of polyesters P-4 and P-5 was less than 5%. Copolyester P-4 showed formation of a yellow iridescent streak at 209 degrees C on heating and development of a Grand-jean texture at 270 degrees C on heating. These are typical textures of the cholesteric liquid crystalline phase. (c) 2006 Wiley Periodicals, Inc.

10acholesteric liquid crystalline polymers (ChLCP)10aDifferential scanning calorimetry (DSC)10aoptical microscopy10asolution polycondensation10aThermogravimetric analysis (TGA)10aviscosity1 aJadhav, Sushilkumar, A.1 aChougule, Rahul, R.1 aShinde, Yogesh, A.1 aChavan, Nayaku uhttps://library.ncl.res.in/content/synthesis-and-characterization-cholesteric-thermotropic-liquid-crystalline-polyesters00841nas a2200169 4500008004100000245022100041210006900262260002900331100002400360700001800384700003000402700002300432700001900455700004300474700002500517856012900542 2007 eng d00aRemoval of AS(III) and AS (V) from contaminated water sources by sorption onto novel pei-attached poly(hipe) beads", paper presented at international conference on ?role of analytical chemistry in nuclear technology?0 aRemoval of ASIII and AS V from contaminated water sources by sor aBARC, Mumbai, IndiacDEC1 aIngavle, Ganesh, C.1 aTayal, Rajeev1 aShaikh, Wasif, Abdul Late1 aChaudhari, Sanjeev1 aChavan, Nayaku1 aRajan, Chelanattukizhakkemadath, Raman1 aPonrathnam, Surendra uhttps://library.ncl.res.in/content/removal-asiii-and-v-contaminated-water-sources-sorption-novel-pei-attached-polyhipe-beads01752nas a2200217 4500008004100000022001400041245009200055210006900147260006900216300001200285490000800297520097100305653002001276653002001296653002301316653001601339100001901355700001901374700002201393856011901415 2009 eng d a0379-677900aPolypyrrole functionalized with ferrocenyl derivative as a rapid carbon monoxide sensor0 aPolypyrrole functionalized with ferrocenyl derivative as a rapid aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcMAR a415-4180 v1593 a

A rapid carbon monoxide detection system was developed with the electrochemical functioncalization of polypyrrole (PPy) with ferrocenylmethyltrimethylammonium iodide (FTMA-I) as a co-dopant exhibits very high sensitivity to ppm levels of carbon monoxide gas and fast recovery under normal dry room temperature conditions. The co-dopant was synthesized mainly to incorporate into PPy electrochemically to modify the properties in order to sense carbon monoxide (CO) gas. The FTMA-I doped PPy exhibited the characteristics oxidation/reduction peaks for ferrocene in its cyclic voltammograms. The modified PPy films deposited on interdigited electrodes gave rapid sensitivity within a second to 300 ppm carbon monoxide gas and good sensitivity factor was observed even at 4 mmol of the functional groups in the polymer for 300 ppm carbon monoxide gas. This material detected the CO gas concentration as low as 100 ppm. (C) 2008 Elsevier B.V. All rights reserved.

10acarbon monoxide10aChemical sensor10aconducting polymer10apolypyrrole1 aPaul, Santhosh1 aChavan, Nayaku1 aRadhakrishnan, S. uhttps://library.ncl.res.in/content/polypyrrole-functionalized-ferrocenyl-derivative-rapid-carbon-monoxide-sensor-002037nas a2200349 4500008004100000245004900041210004900090260000800139520084500147100002000992700003101012700003101043700003101074700002801105700003301133700002501166700004301191700003001234700002901264700002701293700002901320700003001349700003401379700003001413700001901443700003101462700002401493700002501517700003001542700003101572856008401603 2010 eng d00aAmino functionalized oligoimides telechelics0 aAmino functionalized oligoimides telechelics cAUG3 a

This invention relates to a process for the preparation of amino functionalized oligoimide telechelics. More particularly it relates to a process for the preparation of soluble oligoimide prepolymers which can be used as matrix resins that can be rapidly cured to form stable polyimides with amino end functionalities. The amino functionalized oligoimide telechelics are suitable for conversion into three dimensional polymeric systems through condensation chemistry such as reaction with oligo epoxies (epoxy-imide resins), polyacids (polyamide imides) and polyhalogenated compounds (poly amine - imides) to form crosslinked structures having enhanced thermal stability and mechanical strength. The polymers prepared by the process of this invention can be used as materials in advanced composites having high temperature stability.

1 aDwivedi, Mayank1 aRao, Locanindi, Hari Sarvo1 aReddy, Krishna, Mohan Srin1 aDhanasekharan, Janakiraman1 aRao, Bevara, Madhusudan1 aKumar, Sriperambudur, Rajesh1 aPonrathnam, Surendra1 aRajan, Chelanattukizhakkemadath, Raman1 aDeokar, Sarika, Babasaheb1 aMulani, Khudbudin, Baban1 aGhorpade, Ravindra, V.1 aBhongale, Sunil, Sitaram1 aNalawade, Archana, Chetan1 aSontakke, Kalpana, Vishwanath1 aShaikh, Wasif, Abdul Late1 aChavan, Nayaku1 aQureshi, Mohammed, Shadbar1 aDhoble, Deepa, Arun1 aMule, Smita, Atmaram1 aBhosle, Sonali, Madhavrao1 aMomin, Mohasin, Shamshuddi uhttps://library.ncl.res.in/content/amino-functionalized-oligoimides-telechelics02761nas a2200253 4500008004100000245011300041210006900154260000800223300001400231490000600245520182500251653001602076653001802092653003802110653002502148653003202173653002502205653004502230653003202275653001702307653003302324100001902357856013102376 2011 eng d00aSynthesis and characterization of cholesteric thermotropic liquid crystalline polyesters based on isosorbide0 aSynthesis and characterization of cholesteric thermotropic liqui cOCT a1520-15270 v23 a

Generally main chain cholesteric thermotropic liquid crystalline polymers are prepared form chiral dia-cid or diol monomer. But these monomers are costly. Isosorbide is chiral cycloaliphatic diol accessible from renewable resources in the form of pure enantiomers. Thus it is used to synthesize main chain cholesteric thermotropic liquid crystalline polymers. Incorporation of phenyl hydroquinone into the backbone of the main chain frustrates chain pack-ing, thus lowering the crystallinity and depressing the melting point below the degradation temperature, also improves the solubility due to disruption of packing and maintains the mechanical and thermal performance. Results: Optical microscopy study reveals that more than 50% of isosorbide content with phenyl hydroquinone and terephthalic acid showed “yellow iridescent oily streaks” with a background of mosaic/marble texture. These are the typical textures of cholesteric liquid crystalline phase. Copolyesters based on phenyl hydroquinone, isosorbide and terephthalic acid are soluble in aprotic solvents like N,N-dimethylacetamide (DMAC), dimethyl sulfoxide (DMSO), N,N-dimethylformamide (DMF), and N-methyl-2-pyrrolidone (NMP). Solubility increases with the content of isosorbide percent. Thermal stabil-ity of all copolyesters was more than 300˚C on the basis of 10 wt% loss. Conclusions: It was found that main chain cholesteric thermotropic liquid crystalline polymers can be prepared form chiral cycloaliphatic diol such as isosorbide. Main chain cholesteric thermotropic liquid crystalline polyesters are prepared from phenyl hydroquinone, isosorbide and terephthalic acid showed thermal stability more than 300˚C. Main chain cholesteric thermotropic liquid crystalline polymers are soluble in aprotic solvents like DMAC, DMSO, DMF and NMP

10aCholesteric10aCrystallinity10adifferential scanning calorimetry10aInherent Viscosity10aLiquid Crystalline Polymers10aOptical Microscopy10aSolubility and Solution Polycondensation10aThermo Gravimetric Analysis10athermotropic10aWide Angle X-Ray Diffraction1 aChavan, Nayaku uhttps://library.ncl.res.in/content/synthesis-and-characterization-cholesteric-thermotropic-liquid-crystalline-polyesters-based00794nas a2200217 4500008004100000245006300041210006000104260002500164100002500189700004300214700002000257700001900277700001900296700002900315700003100344700003100375700001900406700003000425700003100455856009000486 2011 eng d00aTransfer of technology (ToT) document of ethyl silicate-320 aTransfer of technology ToT document of ethyl silicate32 aDRDL Hyderabad.cJAN1 aPonrathnam, Surendra1 aChelanattukizhakkemadath, Raman, Rajan1 aDwivedi, Mayank1 aChavan, Nayaku1 aQureshi, Moham1 aBhongale, Sunil, Sitaram1 aRao, Locanindi, Hari Sarvo1 aDhanasekharan, Janakiraman1 aMohan, Krishna1 aDeokar, Sarika, Babasaheb1 aMomin, Mohasin, Shamshuddi uhttps://library.ncl.res.in/content/transfer-technology-tot-document-ethyl-silicate-3200855nas a2200217 4500008004100000245009000041210006900131260002500200100002500225700004300250700002000293700001900313700001900332700002900351700003100380700003100411700001900442700003000461700003100491856011500522 2011 eng d00aTransfer of technology (ToT) document of phenol-aniline-formaldehyde (sf-342a) resins0 aTransfer of technology ToT document of phenolanilineformaldehyde aDRDL Hyderabad.cJAN1 aPonrathnam, Surendra1 aChelanattukizhakkemadath, Raman, Rajan1 aDwivedi, Mayank1 aChavan, Nayaku1 aQureshi, Moham1 aBhongale, Sunil, Sitaram1 aRao, Locanindi, Hari Sarvo1 aDhanasekharan, Janakiraman1 aMohan, Krishna1 aDeokar, Sarika, Babasaheb1 aMomin, Mohasin, Shamshuddi uhttps://library.ncl.res.in/content/transfer-technology-tot-document-phenol-aniline-formaldehyde-sf-342a-resins01894nas a2200397 4500008004100000245007400041210006900115260000800184520048600192100002000678700003100698700003500729700003100764700002800795700003300823700002500856700004300881700002400924700003100948700001900979700003000998700002901028700002701057700002901084700003001113700003401143700003001177700002501207700002401232700001901256700003001275700002901305700002701334700003101361856010401392 2012 eng d00aAmino functionalized oligo polyimides with enhanced storage stability0 aAmino functionalized oligo polyimides with enhanced storage stab cJUL3 a

The invention relates to an improved process for the preparation of amino functionalized oligomeric monomeric reactant type polyimides having higher stability. More particularly it relates to a process for the preparation of soluble imide prepolymers, used as matrix resins that can be rapidly cured with multi-functional moieties such as diepoxy, dicarboxyl, anhydride, diisocyanates to form crosslinked structures having enhanced thermal stability and mechanical strength.

1 aDwivedi, Mayank1 aRao, Locanindi, Hari Sarvo1 aMohan, Srinivasulu, Reddy Kris1 aDhanasekharan, Janakiraman1 aRao, Bevara, Madhusudan1 aKumar, Sriperambudur, Rajesh1 aPonrathnam, Surendra1 aRajan, Chelanattukizhakkemadath, Raman1 aTayal, Rajiv, Kumar1 aShadbar, Qureshi, Mohammed1 aChavan, Nayaku1 aDeokar, Sarika, Babasaheb1 aMulani, Khudbudin, Baban1 aGhorpade, Ravindra, V.1 aBhongale, Sunil, Sitaram1 aNalawade, Archana, Chetan1 aSontakke, Kalpana, Vishwanath1 aBhosle, Sonali, Madhavrao1 aMule, Smita, Atmaram1 aDhoble, Deepa, Arun1 aJohn, Aruldoss1 aShaikh, Wasif, Abdul Late1 aHarikrishna, Reghunathan1 aPunitharasu, Vellimala1 aMomin, Mohasin, Shamshuddi uhttps://library.ncl.res.in/content/amino-functionalized-oligo-polyimides-enhanced-storage-stability01876nas a2200397 4500008004100000245007700041210006900118260000800187520046300195100002900658700002900687700003000716700001900746700004300765700003000808700002400838700002000862700002700882700002900909700003100938700001900969700003200988700003101020700002901051700002501080700003001105700002801135700003101163700002401194700003001218700003401248700003101282700003301313700002501346856010701371 2012 eng d00aEthyl oligo-silicates with strong acid heterogeneous polymeric catalysts0 aEthyl oligosilicates with strong acid heterogeneous polymeric ca cMAY3 a

The present invention provides a process for the synthesis of ethyl silicate with varying silica concentration, by hydrolysing ethyl silicate in varying water concentration in the presence of sulfonated catalysts having a styrene-divinyl benzene backbone. The present invention further relates to the preparation of beaded crosslinked polymers containing sulfonic acid moieties having an interconnected pore structure and surface area up to 400 m2 /g.

1 aBevara, Madhusudana, Rao1 aBhongale, Sunil, Sitaram1 aBhosle, Sonali, Madhavrao1 aChavan, Nayaku1 aChelanattukizhakkemadath, Raman, Rajan1 aDeokar, Sarika, Babasaheb1 aDhoble, Deepa, Arun1 aDwivedi, Mayank1 aGhorpade, Ravindra, V.1 aHarikrishna, Reghunathan1 aDhanasekharan, Janakiraman1 aJohn, Aruldoss1 aLocanindi, Hari, Sarvothama1 aMomin, Mohasin, Shamshuddi1 aMulani, Khudbudin, Baban1 aMule, Smita, Atmaram1 aNalawade, Archana, Chetan1 aPunitharasu, Vellimalai1 aQureshi, Mohammed, Shadbar1 aKumar, Tayal, Rajiv1 aShaikh, Wasif, Abdul Late1 aSontakke, Kalpana, Vishwanath1 aReddy, Krishna, Mohan Srin1 aSriperambudur, Rajesh, Kumar1 aPonrathnam, Surendra uhttps://library.ncl.res.in/content/ethyl-oligo-silicates-strong-acid-heterogeneous-polymeric-catalysts02043nas a2200253 4500008004100000022001400041245008800055210006900143260007400212300000900286490000700295520112300302653003401425653001401459653002401473653003301497100002701530700003001557700001901587700001801606700001901624700002901643856011701672 2012 eng d a1022-976000aPhotopolymerization kinetics of 2-phenylethyl (meth) acrylates studied by photo DSC0 aPhotopolymerization kinetics of 2phenylethyl meth acrylates stud aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcJAN a98110 v193 a

The present work deals with the photopolymerization of 2-phenylethyl (meth)acrylates and estimation of their kinetic parameters. Formulations were made by independently homogenizing the monomers with photoinitiators of two different classes. Two different compositions of photoinitiators were used to study the effect of concentration of photoinitiator on cure kinetics. These compositions obtained were tested for photo curing performance using differential photocalorimetry (DPC) or photo DSC under polychromatic radiation. The heat flow against time was recorded for all formulations under isothermal conditions and the rates of polymerization as well as the percentage conversions were estimated. It was observed that due to a longer timescale for reaction diffusion, the methacrylate formulations showed a higher conversion than acrylate formulations. Other parameters such as induction time, maximum rate and conversion attained as well as the time to attain peak maximum were noted. The photopolymerization and kinetic estimations of the formulations including evaluation of kinetic models are discussed.

10aBimolecular termination model10aPhoto DSC10aPhotopolymerization10aVariable autocatalytic model1 aGhorpade, Ravindra, V.1 aBhosle, Sonali, Madhavrao1 aPonrathnam, S.1 aRajan, C., R.1 aChavan, Nayaku1 aHarikrishna, Reghunathan uhttps://library.ncl.res.in/content/photopolymerization-kinetics-2-phenylethyl-meth-acrylates-studied-photo-dsc-001725nas a2200241 4500008004100000022001400041245006600055210006600121260010300187300001200290490000700302520091100309653001001220653002801230653000901258653001201267653001101279653002201290100002901312700002301341700001901364856010001383 2014 eng d a0376-469900aSynthesis and characterization of azoxy based mesogenic diols0 aSynthesis and characterization of azoxy based mesogenic diols aANUSANDHAN BHAWAN, 2 RAFI MARG, NEW DELHI, 110001, INDIAbCOUNCIL SCIENTIFIC & INDUSTRIAL REScMAR a359-3620 v533 a

Azoxy based rigid mesogenic diols have been synthesized using two steps. Phenol/cresol is used as starting material. Synthesized diols are characterized by IR, H-1 and C-13 NMR, and mass spectroscopic methods. Thermal properties have been determined by thermo gravimetric analysis method and crystallinity patterns have been obtained by wide angle X-ray diffiactogram. Substituted phenol (methyl) is used to study the effect of substitution on physical and thermal properties of rigid azoxy mesogenic diol. The detailed characterization of azoxy based rigid diols is reported in this communication, which is highly useful for fundamental and applied research, particularly in liquid crystals and liquid crystalline polymers. The experimental results reveal that phenol based rigid mesogenic diols have high thermal stability and degree of crystallinity than methyl substituted rigid mesogenic diols.

10aAzoxy10adegree of crystallinity10adiol10amesogen10aphenol10athermal stability1 aMulani, Khudbudin, Baban1 aGanjave, Nitin, V.1 aChavan, Nayaku uhttps://library.ncl.res.in/content/synthesis-and-characterization-azoxy-based-mesogenic-diols-001768nas a2200229 4500008004100000022001400041245009600055210006900151260010600220300001000326490000700336520090900343653001401252653001501266653001701281653003001298653001901328100001701347700002501364700001901389856013001408 2014 eng d a0014-305700aSynthesis and characterization of hypercrosslinked hydroxyl functionalized co-polymer beads0 aSynthesis and characterization of hypercrosslinked hydroxyl func aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcOCT a46-580 v593 a

Hydroxyl functionalized beaded copolymers were synthesized from 2-hydroxy ethyl methacrylate by suspension polymerization using two different crosslinking agents (EDMA, DVB) and diluents (1,1,2,2-tetrachloroethane, 1,2-dichlorobenzene). Microporous beads with high surface area were successfully synthesized and characterized by different techniques. Maximum surface area obtained was 564 m(2)/g bearing uniform, spherical as well as non-aggregation images of beads. Thermal properties such as DTG and DSC reveal that, type of crosslinker (flexible/rigid) is major while its concentration is minor parameter that affect decomposition and softening temperature of copolymer. Swelling ratio of copolymer beads was examined as a function of crosslinker and crosslink density. Swelling behavior is in accordance with copolymer-solvent interaction parameter. (C) 2014 Elsevier Ltd. All rights reserved.

10aCopolymer10aMorphology10asurface area10aSuspension polymerization10aSwelling ratio1 aMane, Sachin1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/synthesis-and-characterization-hypercrosslinked-hydroxyl-functionalized-co-polymer-beads-002038nas a2200229 4500008004100000022001400041245012400055210006900179260010300248300001200351490000700363520112000370653002801490653002101518653002001539653002401559653002301583100002901606700002301635700001901658856013101677 2014 eng d a0376-469900aSynthesis and characterization of triad based rigid mesogenic diols derived from hydroquinone and 4-hydroxybenzoic acid0 aSynthesis and characterization of triad based rigid mesogenic di aANUSANDHAN BHAWAN, 2 RAFI MARG, NEW DELHI, 110001, INDIAbCOUNCIL SCIENTIFIC & INDUSTRIAL REScMAY a591-5960 v533 a

Triad based rigid mesogenic diols have been synthesized by four step synthesis method using protection-deprotection method. Hydroquinone and 4-hydroxy benzoic acid have been used as starting materials. Synthesized diols have been characterized by IR, H-1 and C-13 NMR, and mass spectroscopic methods. Thermal properties have been determined by thermo gravimetric analysis method and degree of crystallinity have been measured by wide angle X-ray technique. Substituted hydroquinones (methyl and chloro) have been used to study the effect of substitution on physical and thermal properties. Synthesis of rigid mesogenic diol monomer using p-hydroxy benzoic acid and hydroquinone is reported, which is a facile route. Hydrolysis of diacetate derivatives of rigid mesogenic diols is performed in good yields, even though two types of ester groups present in the same moiety, aromatic and aliphatic. The experimental results reveal that hydroquinone based rigid triad mesogenic diol have high thermal stability and degree of crystallinity as compared to methyl-and chloro-substituted rigid triad mesogenic diols.

10adegree of crystallinity10aester hydrolysis10aMesogenic diols10aspectral properties10aThermal properties1 aMulani, Khudbudin, Baban1 aGanjave, Nitin, V.1 aChavan, Nayaku uhttps://library.ncl.res.in/content/synthesis-and-characterization-triad-based-rigid-mesogenic-diols-derived-hydroquinone-and-002476nas a2200277 4500008004100000022001400041245014700055210006900202260008600271300001200357490000700369520144100376653001401817653001801831653002001849653002601869653002201895653002001917100001901937700001901956700001701975700001901992700002902011700002902040856012902069 2015 eng d a1060-132500aAmbient temperature photocopolymerization of tetrahydrofurfuryl methacrylate and isobornyl methacrylate: reactivity ratios and thermal studies0 aAmbient temperature photocopolymerization of tetrahydrofurfuryl  a530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USAbTAYLOR & FRANCIS INCcDEC a982-9910 v523 a

Photocopolymerization of heterocyclic monomer namely, tetrahydrofurfuryl methacrylate with bulky bicyclic monomer, isobornyl methacrylate with different feed ratios was carried out in bulk with low concentration of an -hydroxyl ketone based photoinitiator. The ambient temperature photocopolymerization was carried out by using a UV-Visible lamp with fixed low intensity of 0.4mW cm(-2) for a period of 6min. The residual monomer remained in the polymerization process were determined by using gas chromatography. The reactivity ratio values for the two monomers were calculated from the copolymer composition data by using Fineman-Ross, Kelen-Tudos, Extended Kelen-Tudos and Mao-Huglin methods. Individually, as well as the average of all the methods revealed that the monomer reactivity ratios of tetrahydrofurfuryl methacrylate were higher than isobornyl methacrylate. The dyad sequence distribution and dyad sequence lengths were calculated using the Igarashi and Pyun method and the sequence length distribution for tetrahydrofurfuryl methacrylate was observed to be higher with an increase in its feed content. This supports the reactivity ratio studies that a higher monomer reactivity ratio value for tetrahydrofurfuryl methacrylate was observed as compared to its comonomer. The thermal studies showed that the glass transition temperatures of the copolymers increased with an increase in isobornyl methacrylate content.

10aCopolymer10amethacrylates10amicro structure10aphotocopolymerization10areactivity ratios10athermal studies1 aRajdeo, K., S.1 aPonrathnam, S.1 aPardeshi, S.1 aChavan, Nayaku1 aBhongale, Sunil, Sitaram1 aHarikrishna, Reghunathan uhttps://library.ncl.res.in/content/ambient-temperature-photocopolymerization-tetrahydrofurfuryl-methacrylate-and-isobornyl-002180nas a2200229 4500008004100000022001400041245009000055210006900145260009200214300001200306490000700318520130800325653002501633653003601658653002301694653003101717653001701748100001701765700002501782700001901807856012401826 2015 eng d a1385-772X00aDesign and synthesis of cauliflower-shaped hydroxyl functionalized core-shell polymer0 aDesign and synthesis of cauliflowershaped hydroxyl functionalize a4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLANDbTAYLOR & FRANCIS LTDcNOV a723-7330 v183 a

Conventional crosslinked polymers and homopolymers both have their own limitations. As a result, core-shell polymer was synthesized to obtain cauliflower-shaped and highly hydroxyl functionalized polymer. For the core, acrylate-based copolymers were synthesized by varying crosslinkers and porogens at different crosslink density. Owing to high surface area (554 m(2)/g), poly(MMA-co-DVB) was used as a core and low-molecular weight (24,600g/mol) poly(GMA) was used as a shell in core-shell approach. Average particle sizes of the core polymers were in the range of 15-75 mu m. In order to evaluate reactivity efficiency of core-shell polymer, hydroxyl content was evaluated with a value of 3.97mmol/g. Importantly, hydroxyl content demonstrated the successful increase in reactive sites of the core-shell polymer over conventional crosslinked hydroxyl polymer. Notably, synthesized core-shell polymer has more surface area and pore volume which substantially attributes for better polymer efficiency during application. Scanning electron microscopy images revealed the spherical, uniform, and slightly conglomerated properties of core-shell polymer. Due to higher reactivity, insolubility, and more surface area of hydroxyl functionalized core-shell polymer, its use become inevitably essential.

10aC-13 solid state NMR10acauliflower-shaped porous beads10acore-shell polymer10ahydroxyl functionalization10asurface area1 aMane, Sachin1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/design-and-synthesis-cauliflower-shaped-hydroxyl-functionalized-core-shell-polymer-002279nas a2200169 4500008004100000022001400041245014700055210006900202260011000271300001400381490000700395520151500402100001701917700002501934700001901959856013101978 2015 eng d a1144-054600aHyperhydrophilic three-dimensional crosslinked beads as an effective drug carrier in acidic medium: adsorption isotherm and kinetics appraisal0 aHyperhydrophilic threedimensional crosslinked beads as an effect aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN a3835-38440 v393 a

Conventional drug delivery materials are known to provide slow and low drug loading in aqueous medium due to the hydrophobic or less hydrophilic properties of the carrier. However, the present study explored the synthesis of cheaply available metals modified with a hyperhydrophilic polymer. Hyperhydrophilic three-dimensional crosslinked beads as a drug carrier were synthesized with desirable properties that substantially influence the polymer efficiency. These synthesized polymers were characterized for surface area, particle size, acid content and morphology, and the metal modification was evaluated to obtain an efficient polymer for drug adsorption in an acidic medium. Contact time, which significantly affects drug adsorption was comparatively evaluated using the cheaply available metals, cobalt and nickel. Interestingly, an adsorption study revealed that gradual drug loading occurs during the initial 12 h. Afterwards, adsorption increases steadily and then stabilizes. Furthermore, theoretical predictions of adsorption, including Langmuir adsorption isotherm and pseudo order kinetics, were also evaluated. Remarkably, polymer supported Co/Ni demonstrated 85 and 78% metoprolol drug adsorption, respectively, at an optimum pH of 3 after 24 h. Langmuir adsorption isotherm revealed monolayer adsorption on the polymer supported Co/Ni. Pseudo first and second order kinetics were also evaluated and demonstrated the adsorption mechanism and equilibrium adsorption capacity, respectively.

1 aMane, Sachin1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/hyperhydrophilic-three-dimensional-crosslinked-beads-effective-drug-carrier-acidic-medium-001914nas a2200169 4500008004100000022001400041245013300055210006900188260007100257300001400328490000700342520120700349100001701556700002501573700001901598856012701617 2015 eng d a0888-588500aRole of interfacial tension of solvating diluents and hydrophilic-hydrophobic cross-linkers in hyper-cross-linked solid supports0 aRole of interfacial tension of solvating diluents and hydrophili a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJUL a6893-69010 v543 a

The properties of a hyper-cross-linked solid support are the outcome Of the interfacial tension created by solvating/nonsolvating diluents, the hydrophilicity/hydrophobicity of the cross-linkers, and their concentrations. Interestingly, a More hydrophobic diluent and cross-linker as well as a higher concentration of cross-linker-containing copolymer revealed an increase In surface area. A high surface area and low cross-link density (CLD) polymer illustrated higher epoxy content. Importantly, maximum surface area (533 m(2)/g) Was obtained at high CLD; inversely, epoxy,content (1.83 mmol/g) was higher at low CLD polymer. Notably, greater rigidity of cross-linker and its higher concentration increased T-max and T-g; contrarily, greater flexibility of cross-linker and its concentration attenuated T-max and T-g. Thermal study demonstrated the thermostability (300 degrees C) and polymer safe temperature (220 degrees C). Indeed, a lower solubility parameter difference between polymer and swelling solvent produces a higher polymer-solvent interaction parameter, resulting in increased polymer swelling. Polymers with high surface area and low CLD demonstrated greater swelling behavior.

1 aMane, Sachin1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/role-interfacial-tension-solvating-diluents-and-hydrophilic-hydrophobic-cross-linkers-001860nas a2200241 4500008004100000022001400041245008100055210006900136260010200205300001400307490000700321520098000328653001201308653003101320653001201351653003201363653002901395100001701424700001801441700002501459700001901484856011501503 2015 eng d a0250-470700aSynthesis and characterization of thermotropic liquid crystalline polyimides0 aSynthesis and characterization of thermotropic liquid crystallin aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACAD SCIENCEScOCT a1553-15590 v383 a

Non-symmetrical and linear dyad-based mesogens were synthesised containing imine or ester bridging group. In the present work, due to the absence of branching in diamine-based mesogen, the structure has-rigidity inversely imine/ester bridging groups between two benzene rings imparts-flexible property to the mesogen and consequently rigid-flexible property has been balanced. The synthesised mesogens were characterized by different techniques including nuclear magnetic resonance and Fourier transform infrared spectroscopy. Liquid crystalline polymers (LCPs) were synthesised using pyromellitic dianhydride and 4-[(4-aminobenzylidene)amino]aniline or 4-aminophenyl-4-aminobenzoate. Subsequently, thermotropic liquid crystalline polymers (TLCPs) have also been evaluated to obtain optical microscopy textures at different temperatures which demonstrated interesting and notable changes. It is worth noting that marble-like textures were observed upto 200A degrees C.

10aDiamine10aliquid crystalline polymer10amesogen10aoptical microscopy textures10apyromellitic dianhydride1 aMane, Sachin1 aRajan, C., R.1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/synthesis-and-characterization-thermotropic-liquid-crystalline-polyimides-101797nas a2200241 4500008004100000022001400041245016500055210006900220260010000289300001200389490000600401520080400407653003201211653002601243653001901269653003001288653002301318100002701341700001801368700001901386700001901405856013101424 2015 eng d a1788-618X00aSynthesis of novel silica-polyimide nanocomposite films using aromatic-amino modified silica nanoparticles: mechanical, thermal and morphological investigations0 aSynthesis of novel silicapolyimide nanocomposite films using aro aDEPT POLYMER ENG, MUEGYETEM RKP 3, BUDAPEST, H-1111, HUNGARYbBUDAPEST UNIV TECHNOL & ECONcMAY a469-4790 v93 a

Silica nanoparticles were modified with aromatic amino groups and modified-silica/polyimide composite films were prepared using them. 3,3!, 4,4!-Benzophenone tetracarboxylic dianhydride (BTDA) and 4,4!-oxydianiline (ODA) were used as precursors for polyimide matrix. The structures of the modified nanoparticles and hybrid nanocomposites were identified using Fourier Transform Infrared (FTIR) spectrometry. The hybrid composite films were evaluated for mechanical, thermal and morphological characteristics. Morphological results describe a uniform dispersion of silica particles in the polymer matrix. The thermal stability and mechanical properties of polyimide composite were improved, and the decomposition temperature was increased when the amount of silica nanoparticles was increased.

10ahybrid polyimide composites10amechanical properties10aNanocomposites10ananoparticle modification10aThermal properties1 aGhorpade, Ravindra, V.1 aRajan, C., R.1 aChavan, Nayaku1 aPonrathnam, S. uhttps://library.ncl.res.in/content/synthesis-novel-silica-polyimide-nanocomposite-films-using-aromatic-amino-modified-silica-001880nas a2200241 4500008004100000022001400041245014900055210006900204260010200273300001400375490000700389520088200396653003101278653003301309653003401342653001501376653001701391100002901408700003101437700002301468700001901491856012801510 2015 eng d a0250-470700aThermotropic liquid crystalline polyesters derived from bis-(4-hydroxybenzoyloxy)-2-methyl-1,4-benzene and aliphatic dicarboxylic acid chlorides0 aThermotropic liquid crystalline polyesters derived from bis4hydr aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACAD SCIENCEScSEP a1301-13080 v383 a

A series of thermotropic liquid crystalline polyesters derived from bis-(4-hydroxybenzoyloxy)-2-methyl-1,4-benzene(BHBOMB) and aliphatic dicarboxylic acid chlorides were investigated. All these polyesters were synthesized by interfacial polycondensation method and characterized by differential scanning calorimetry and wide-angle X-ray diffractometer. These polyesters consist of BHBOMB as a mesogenic diol and aliphatic diacid chlorides were used as flexible spacers. The length of oligomethylene units in polymer was varied from the trimethylene to the dodecamethylene groups. The transition temperatures and thermodynamic properties were studied for all these polymers. All these polyesters were soluble in chlorinated solvents such as chloroform, dichloromethane, dichloroethane, etc. More importantly, all these polyesters exhibited very large mesophase stability.

10adicarboxylic acid chloride10ainterfacial polycondensation10aLiquid crystalline polyesters10arigid diol10athermotropic1 aMulani, Khudbudin, Baban1 aMomin, Mohasin, Shamshuddi1 aGanjave, Nitin, V.1 aChavan, Nayaku uhttps://library.ncl.res.in/content/thermotropic-liquid-crystalline-polyesters-derived-bis-4-hydroxybenzoyloxy-2-methyl-14-002107nas a2200241 4500008004100000022001400041245009500055210006900150260007100219300001200290490000700302520123300309653002401542653002401566653002201590653001701612653003301629653001501662100001701677700002501694700001901719856012701738 2016 eng d a0091-403700aCrosslinked polymer embedded Cu/Ag for comparative drug adsorption and kinetics evaluation0 aCrosslinked polymer embedded CuAg for comparative drug adsorptio aKARL JOHANS GATE 5, NO-0154 OSLO, NORWAYbTAYLOR & FRANCIS AScJAN a285-2930 v653 a

Two-dimensional crosslinked polymer (2-DCP) was synthesized for evaluation of drug adsorption and kinetics thereof. Further, polymer properties were evaluated and parameters such as contact time and adsorption isotherm were also studied. Herein, contact time demonstrated 83% and 85% of drug loading in an acidic medium for two-dimensional crosslinked polymer embedded copper and silver (2-DCP-Cu/Ag), respectively in 24h. Initial 4h is the exponential drug loading period whereas drug loading was increased gradually after 4h. Salbutamol loading was well-fitted to Langmuir adsorption isotherm, which indicated a monolayer drug adsorption with respect to 2-DCP-Cu/Ag. Pseudo first- and pseudo second-order kinetics was evaluated to perceive the drug adsorption mechanism and equilibrium adsorption capacity. Monolayer drug adsorption with chemisorption mechanism was observed for 2-DCP-Cu/Ag. In addition to this, decomposition temperature of polymer was 440 and 325 degrees C while glass transition temperature of polymer was 280 and 200 degrees C before and after metal modification, respectively. (A=aqueous phase; B=organic phase; C=drug solution; D=drug loaded polymer; E=enlarged drug loaded polymer.) [GRAPHICS] .

10aAdsorption isotherm10aadsorption kinetics10acrosslink polymer10adrug loading10alangmuir adsorption isotherm10asalbutamol1 aMane, Sachin1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/crosslinked-polymer-embedded-cuag-comparative-drug-adsorption-and-kinetics-evaluation-101975nas a2200229 4500008004100000022001400041245014000055210006900195260007100264300001200335490000700347520109700354653002401451653002401475653001701499653001801516653002401534100001701558700002501575700001901600856012601619 2016 eng d a0091-403700aInterfacial tension approach toward drug loading with two-dimensional crosslinked polymer embedded gold: adsorption kinetics evaluation0 aInterfacial tension approach toward drug loading with twodimensi aKARL JOHANS GATE 5, NO-0154 OSLO, NORWAYbTAYLOR & FRANCIS AScJAN a168-1750 v653 a

Interfacial tension of drugs with hydrophilic polymer (A) embedded gold resulting into selective drug adsorption, which also affected the drug adsorption kinetics. Two-dimensional crosslinked polymer embedded gold was synthesized for drug loading application in an acidic buffer. Lower interfacial tension of pantoprazole sodium (B) revealed the exponential loading inversely loading was gradual for chloroquine (C) having more interfacial tension with adsorbent. Initial 2 h was the exponential adsorption period for a pantoprazole sodium whereas exponential adsorption begins after 12 h for a chloroquine. Monolayer drug adsorption was obtained because Langmuir adsorption isotherm was obeyed by both drugs. Moreover, pseudo first-and pseudo second-order kinetics was also evaluated which demonstrated that reactive sites of the adsorbent are homogeneous and drug adsorption mechanism is chemisorption and not the physisorption. Thermal analysis was evaluated to confirm the polymer thermostability and glass transition temperature during catalytic applications in thermal reactions.

10aAdsorption isotherm10aadsorption kinetics10adrug loading10adrug polarity10aInterfacial tension1 aMane, Sachin1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/interfacial-tension-approach-toward-drug-loading-two-dimensional-crosslinked-polymer-002765nas a2200217 4500008004100000022001400041245016600055210006900221260011000290300001200400490000600412520183400418100002602252700002702278700002102305700003102326700001902357700002102376700001902397856013102416 2016 eng d a2050-750X00aInverse high internal phase emulsion polymerization (i-HIPE) of GMMA, HEMA and GDMA for the preparation of superporous hydrogels as a tissue engineering scaffold0 aInverse high internal phase emulsion polymerization iHIPE of GMM aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcNOV a450-4600 v43 a

A series of novel superporous hydrogels for regenerative medicine were prepared by oil-in-water (o/w) or inverse high internal phase emulsion (i-HIPE) copolymerization of glycerol monomethacrylate (GMMA), 2-hydroxy ethyl methacrylate (HEMA) and glycerol dimethacrylate (GDMA) as a cross-linker using a non toxic solvent and a redox initiator system at the physiological temperature (37 degrees C). The monomer GMMA was synthesized from glycidyl methacrylate (GMA) by an alternative facile method using Amberlyst-15. The described i-HIPEs showed a significantly wider stability window. The polyHIPE hydrogels were characterized by FTIR, BET method for surface area, mercury porosimetry, SEM, DSC, TGA, XRD, compressive strain and strain recovery. The swelling ratio of the hydrogels and their degradation in 0.007 M NaOH and lipase B (Candida antarctica) solutions were determined gravimetrically and the rate of degradation was explained in terms of the molecular structure of the hydrogels. The morphological studies showed that the pore diameter varied between 20 and 30 mu m and the pore throats (interconnecting windows) diameter was in the range of 4-8 mu m. The described polyHIPE hydrogels were found to have an open cell morphology and interconnected pore architecture, which are important characteristics for scaffold applications. The initial cytotoxicity study performed according to ISO-10993-5 indicated cytocompatibility (97% cell viability) and the subsequent cell seeding and proliferation study exhibited 55-88% cell viability (increased monotonously from GHG-1 to GHG-5), which could be attributed to modulation of the physical and chemical properties of the hydrogels. The described super porous hydrogels are considered as potential candidates for scaffold materials in tissue engineering applications.

1 aNalawade, Archana, C.1 aGhorpade, Ravindra, V.1 aShadbar, Sadiqua1 aQureshi, Mohammed, Shadbar1 aChavan, Nayaku1 aKhan, Ayesha, A.1 aPonrathnam, S. uhttps://library.ncl.res.in/content/inverse-high-internal-phase-emulsion-polymerization-i-hipe-gmma-hema-and-gdma-preparation-002008nas a2200253 4500008004100000022001400041245011100055210006900166260009900235300000900334490000700343520105300350653002801403653002401431653001701455653002701472653002301499100001701522700002501539700001801564700002501582700001901607856012801626 2016 eng d a0032-386100aRole of aliphatic hydrocarbon content in non-solvating porogens toward porosity of cross-linked microbeads0 aRole of aliphatic hydrocarbon content in nonsolvating porogens t aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcMAR a8-140 v863 a

Megaporous spherical acrylate copolymer beads were synthesized by suspension polymerization using non-solvating porogens. Non-solvating porogens with higher aliphatic hydrocarbon content generated megaporous morphology with lower surface area. Surface area increased and inversely megaporosity was decreased with decrease in the aliphatic hydrocarbon content of porogen. Megaporosity (5.47 mu m) and pore volume of 5.52 cm(3)/g was obtained with n-decanol. Thermal property of copolymer is a function of type (rigidity/flexibility/elemental composition) and concentration (cross-link density) of monomer and cross-linker. Copolymer containing rigid cross-linker (divinylbenzene) had better thermal stability over copolymer with flexible cross-linker (ethylene dimethacrylate). Further, higher concentration of rigid cross-linker or lower concentration of flexible cross-linker enhanced the thermal stability. Porous polymers are potentially recognized as a solid support for solid-phase synthesis. (C) 2016 Elsevier Ltd. All rights reserved.

10aCross-linked microbeads10aInterfacial tension10aMegaporosity10aNon-solvating porogens10aThermal properties1 aMane, Sachin1 aBadiger, Manohar, V.1 aRajan, C., R.1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/role-aliphatic-hydrocarbon-content-non-solvating-porogens-toward-porosity-cross-linked-001927nas a2200229 4500008004100000022001400041245007200055210006900127260006700196300001000263490000800273520116600281653001501447653001501462653001701477653001301494653002701507100001701534700002501551700001901576856010201595 2016 eng d a0021-899500aSelective solid-phase extraction of metal for water decontamination0 aSelective solidphase extraction of metal for water decontaminati a111 RIVER ST, HOBOKEN 07030-5774, NJ USAbWILEY-BLACKWELLcJAN a428490 v1333 a

Metal-contaminated industrial effluent is a major concern for human health. Therefore, the removal of metal is of primary importance. In this study, metals were selectively extracted from water. Selective metal recovery was studied with a crown-ether-based polymer, wherein the selectivity was observed for strontium over lead. Parameters influencing the metal recovery, such as the contact time, adsorbent dosage, and metal-ion concentration, were evaluated. Interestingly, the adsorption rate of strontium was exponentially increased for the initial 4 h, and lead was adsorbed exponentially after 6 h. Notably, 98% strontium adsorption and 64% lead adsorption were obtained in 24 h. The Langmuir adsorption isotherm was in good agreement and demonstrated that the reactive sites of the adsorbent were homogeneous with monolayer metal adsorption with an adsorbent. The Freundlich adsorption isotherm was not obeyed by both metals. The pseudo-first-order and pseudo-second-order kinetics indicated that strontium was adsorbed by chemisorption and lead was adsorbed by physisorption. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 132, 42849.

10aAdsorption10acopolymers10acrosslinking10akinetics10aradical polymerization1 aMane, Sachin1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/selective-solid-phase-extraction-metal-water-decontamination-102137nas a2200229 4500008004100000022001400041245015800055210006900213260008700282300001000369490000700379520120700386653003701593653001401630653002901644100002701673700002401700700001801724700001901742700001901761856012701780 2016 eng d a0954-008300aSynthesis and characterization of thermally stable polyimides with a pendent phenothiazine unit based on new diamine 10-(3,5-diaminobenzoyl)phenothiazine0 aSynthesis and characterization of thermally stable polyimides wi a1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLANDbSAGE PUBLICATIONS LTDcFEB a26-330 v283 a

A novel diamine 10-(3,5-diaminobenzoyl)phenothiazine (DBPT) with a side chain containing phenothiazine unit was synthesized. A new family of polyimides (PIs) containing phenothiazine unit in the side chains has been successfully synthesized by direct polycondensation of DBPT with pyromellitic dianhydride, 3,3',4,4'-benzophenone tertacarboxylic dianhydride, and 4,4'-oxydiphthalic anhydride (ODA) via a conventional two-step chemical imidization process. The yield of polymers was good enough, which were soluble in most organic solvents. The molecular orbital energy gaps, thermal stability, and crystallinity of PIs were investigated by molecular modeling, thermogravimetric analysis, and wide-angle X-ray scattering, respectively. Thermal properties of polymers were good enough to permit the use of these PIs in various applications; only 49% weight loss is detected at 900 degrees C in nitrogen atmosphere. X-Ray diffraction clearly reveals the amorphous nature of PIs. A quantum modeling study (density functional theory) has shown the influence of dianhydride structure on the energy difference of highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels.

10aphenothiazine-containing diamine10aPolyimide10athermally stable polymer1 aGhorpade, Ravindra, V.1 aThorave, Asmita, K.1 aRajan, C., R.1 aChavan, Nayaku1 aPonrathnam, S. uhttps://library.ncl.res.in/content/synthesis-and-characterization-thermally-stable-polyimides-pendent-phenothiazine-unit-001741nas a2200241 4500008004100000022001400041245017200055210006900227260008600296300001200382490000700394520074800401653003701149653002701186653002101213653002301234653002201257653002301279100002701302700002501329700001901354856012601373 2016 eng d a1060-132500aSynthesis of 2-phenoxy-2-phenylethyl acrylate and copolymerization with 2-phenylethyl acrylate: estimation of monomer reactivity ratios, thermal and optical properties0 aSynthesis of 2phenoxy2phenylethyl acrylate and copolymerization  a530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USAbTAYLOR & FRANCIS INCcMAY a457-4640 v533 a

A new aromatic based monomer 2-phenoxy-2-phenylethyl acrylate (PPEA) was synthesized. Copolymers of PPEA with 2-phenylethyl acrylate (PEA) were prepared by free radical polymerization. The reactivity ratios were estimated using various graphical methods. Structural parameters of the copolymers were obtained by calculating the dyad monomer sequence fractions and the mean sequence length. Optical properties of polymers such as refractive indices and UV-Visible absorption were investigated. The glass transition temperature and thermal degradation behavior of the copolymers were studied. Combined with the RI, transparency and thermal properties, prepared copolymers hold great promise as materials for intraocular lens applications.

10a2-Phenoxy-2-phenylethyl acrylate10a2-phenylethyl acrylate10acopolymerization10aOptical properties10areactivity ratios10aThermal properties1 aGhorpade, Ravindra, V.1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/synthesis-2-phenoxy-2-phenylethyl-acrylate-and-copolymerization-2-phenylethyl-acrylate02767nas a2200277 4500008004100000245008200041210006900123260000800192490000800200520188500208653000902093653004202102653002102144653001402165653001502179653001502194653001302209653004702222653001002269100002102279700001702300700002202317700001902339700001902358856011202377 2017 eng d00aThermotropic liquid crystalline polyesters derived from 2-chloro hydroquinone0 aThermotropic liquid crystalline polyesters derived from 2chloro  cSEP0 v1293 a

Synthesis of thermotropic liquid crystalline polyesters derived from bis[4-hydroxy benzoyloxy]-2-chloro-1,4-benzene (BHBOCB) and aliphatic dicarboxylic acid chlorides by interfacial polycondensation methodology is presented. Synthesised polyesters consist of bis[4-hydroxy benzoyloxy]-2-chloro-1,4-benzene as a mesogen and aliphatic diacid chloride as flexible spacer. The length of oligomethylene units in the polymer was varied from the trimethylene to the dodecamethylene groups. Synthesized polyesters were characterized by differential scanning calorimetry and optical microscopy. The transition temperatures and thermodynamic properties were studied for all these polymers. These polyesters exhibited thermotropic liquid crystalline behavior and showed nematic texture except decamethylene spacer. Decamethylene spacer based polyester showed marble texture of smectic C. Mesophase stability of these polyesters was higher than (except first heating cycle of PE-1). 

SYNOPSIS The present study deals with the synthesis of thermotropic liquid crystalline polyesters derived from bis[4-hydroxy benzoyloxy]-2-chloro-1,4-benzene (BHBOCB) and aliphatic dicarboxylic acid chlorides by interfacial polycondensation methodology.

10aacid10aAliphatic Flexible Spacers Main-chain10aAromatic Mesogen10aElastomer10aMorphology10aPolydomain10aPolymers10aThermotropic Liquid Crystalline Polyesters10aUnits1 aManurkar, Nagesh1 aMore, Sayaji1 aMulani, Khudbudin1 aGanjave, Nitin1 aChavan, Nayaku uhttps://library.ncl.res.in/content/thermotropic-liquid-crystalline-polyesters-derived-2-chloro-hydroquinone02131nas a2200253 4500008004100000022001400041245013100055210006900186260000900255300000700264490000700271520127900278653002401557653001001581653001801591653001701609653002301626653001501649100002201664700002201686700001901708700001801727856013201745 2019 eng d a1022-976000aAdsorptive removal of chromium(VI) using spherical resorcinol-formaldehyde beads prepared by inverse suspension polymerization0 aAdsorptive removal of chromiumVI using spherical resorcinolforma cJAN  a410 v263 a

The spherical cross-linked beaded polymers were prepared by condensation of resorcinol and formaldehyde in presence of tri-ethylamine by inverse suspension polymerization technique. The m-cresol, aniline, urea and thiourea were used as co-monomer and polyethylene glycol (PEG 400) was used as porogen. Paraffin oil was used as non-aqueous suspension agent. The polymeric spherical beads were prepared using various types of comonomers exhibiting range of particle size 77.62 to 158.84m at 90 degrees C and 300rpm for 4h. The resulting beads were analyzed by elemental analysis, particle size analysis and scanning electron microscope (SEM). The synthesized beads were used for the removal of Cr(VI) from aqueous solutions. A simple and sensitive solid phase extraction procedure was used for the determination of chromium at trace level by spectrophotometric method using 1,5-diphenylcarbazide reagent. The adsorption of Cr(VI) on the resorcinol-formaldehyde beads was monitored by energy-dispersive X-ray spectroscopy (EDX) analysis. The metal adsorption parameters such as contact time, pH, metal ion concentration and adsorbent dose were investigated. For Cr(VI), the maximum adsorption capacity was about 99% at pH2 for the resorcinol-formaldehyde beads obtained.

10aadsorption kinetics10aBeads10aChromium (VI)10aFormaldehyde10aInverse suspension10aResorcinol1 aMulani, Khudbudin1 aPatil, Vishwanath1 aChavan, Nayaku1 aDonde, Kamini uhttps://library.ncl.res.in/content/adsorptive-removal-chromiumvi-using-spherical-resorcinol-formaldehyde-beads-prepared-inverse05855nas a2200301 4500008004100000022001400041245011100055210006900166260000800235300001600243490000700259520486100266653003905127653001805166653002405184653001505208653002705223100001905250700001605269700001805285700002005303700001905323700001905342700002505361700001905386700002405405856012405429 2023 eng d a0170-083900aNovel shear thickening fluids possessing high shear rates using monodispersed silica nanoparticles and PEG0 aNovel shear thickening fluids possessing high shear rates using  cDEC a13069-130980 v803 a

Higher shear rate possessing homogeneous shear thickening fluids were synthesized using monodispersed silica nanoparticles and polyethylene glycol (PEG). Novel homogeneous methodology was developed for the synthesis of shear thickening fluids using monodispersed silica nanoparticles and PEG. Shear rate of shear thickening fluids (STF) was determined using rheometer at room temperature. The normal shear rate was observed in the range of 100 to 1200 s(-1), whereas higher shear rate 2000 s(-1) was obtained using monodispersed silica nanoparticles, PEG and shear rate enhancer. Monodispersed silica nanoparticles were synthesized in a typical one-pot using modified Stober's method at room temperature. Precursors were used for the synthesis of monodispersed silica nanoparticles such as tetraethyl orthosilicate (TEOS), ethanol, deionized water and ammonia as catalyst. Particle size of monodispersed silica nanoparticles was in the range of 100-1200 nm, and particle size distribution was varied from 0.000 to 0.221. Synthesis of monodispersed silica nanoparticles was studied by various parameters, namely effect of TEOS concentration, grade of ethyl alcohol, ammonia concentration and water concentration. TEOS concentration effect shows particle size and particle size distribution increases with increase in concentration of TEOS. Even though concentration of TEOS was increased up to 5 times the observation was same for all particle sizes such as 100, 300 and 500 nm. Particularly in the case of 300 nm monodispersed silica nanoparticle synthesis, as TEOS concentration was increased from 1 to 5X (5 times) the particle size was increased from 331.7, 447.8, 497.0, 512.0 and 531.7 nm and particle size distribution was 0.005, 0.000, 0.006, 0.007 and 0.089, respectively. The effect of grade of ethyl alcohol illustrates that Indian rectified spirit shows almost similar results with respect to China make ethyl alcohol. Comparative study of China and Indian rectified spirit shows silica nanoparticle size was 174.6 and 174.2 nm, and particle size distribution was 0.065 and 0.071, respectively. Ammonia concentration effect explains particle size and particle size distribution increases with increase in concentration of ammonia. Water concentration effect shows particle size and particle size distribution increases with increase in concentration of ammonia. Comparative data of water concentration effect for 1316 and 1974 mL shows particle size were 321.7 and 488.0 nm, and particle size distribution was 0.083 and 0.05, respectively, under similar conditions. Morphological studies displayed the shape of the silica nanoparticles was spherical, monodispersed and isolated. A typical TEM image of monodispersed silica nanoparticles for 500 nm was observed with extremely low polydispersity, i.e., 0.000. It is very difficult to get such a type of excellent photograph of monodispersity by Stober's method particularly on large scale. Rheology study of homogeneous shear thickening fluids studied by varying the parameters such as composition of silica nanoparticles with PEG, effect of amount of solvent, effect of refluxing time, effect of additive with respect to the mol. wt. of PEG and effect of additive such as Tannin. All these parameters of STF explored with respect to the shear rate and shear viscosity. Effect of ethanol amount on STF demonstrates the shear rate increases with increase in amount of solvent. Effect of refluxing time on STF exhibits the shear rate increases with increase in refluxing time. Effect of composition based on 500 nm monodispersed silica nanoparticles and PEG 200 with respect to 60:40, 65:35 and 70:30 composition was studied and the results predict that shear rate increases with increase in silica percentage in composition, i.e., 118, 265 and 1200 s(-1) for 60:40, 65:35 and 70:30 composition, respectively, whereas maximum viscosity decreases with increase in silica content, i.e., 2.559, 1.420 and 1.200 Pa.s for 60:40, 65:35 and 70:30 composition, respectively. Effect of additive on shear rate and shear viscosity illustrates that shear rate decreases with increase in additive percentage in composition, whereas maximum viscosity increases with increase in additive content. Effect of additives on shear rate and shear viscosity was performed using 65:35 composition with respect to PEG 200 along with PEG 6000 shows shear rate was decreased from 142 to 6.42 s(-1) and maximum viscosity was increased from 56.1 to 571.0 Pa.s when the quantity of PEG 6000 was doubled. In general, additive decreases shear rate and increases shear viscosity (maximum). But effect of Tannin as an additive on 500 nm monodispersed silica nanoparticles with PEG 200 using 70:30 composition showed enormous increase in shear rate, i.e., 2000 s(-1). This is anomalous behavior of additive was observed.

10aMonodispersed silica nanoparticles10aNanocomposite10aPolyethylene glycol10aShear rate10aShear thickening fluid1 aChavan, Nayaku1 aDhage, Atul1 aWale, Apparav1 aThorave, Asmita1 aRajdeo, Kishor1 aKamble, Sanjay1 aPonrathnam, Surendra1 aTambe, Sanjeev1 aVerma, Sanjeevkumar uhttps://library.ncl.res.in/content/novel-shear-thickening-fluids-possessing-high-shear-rates-using-monodispersed-silica