01721nas a2200265   4500008004100000022001400041245007400055210006900129260000800198300001200206490000700218520090400225653001901129653001401148653001501162653002701177653001001204100002201214700002401236700002101260700002601281700002601307700002301333856009901356       2018                        eng d  a0935-964800aIn situ nanoparticle embedding for authentication of epoxy composites0 aIn situ nanoparticle embedding for authentication of epoxy compo  cAUG  a18015230 v303 a<p>In situ reduction of chloroauric acid inside an amine-cured epoxy matrix leads to formation of gold nanoparticles which are embedded inside the part. This phenomenon is leveraged to design an authentication system for composites wherein the particles are embedded spatially and are invisible to the naked eye. Under UV light, the particles diffract light and create an easily visible path. The particles penetrate inside the part and create a permanent, cost-effective, tamper-proof code. The advantage of this technique is that this authentication system can be built in composite parts after fabrication of the composite structure. As very small amount (nanograms) of particles are present in the part, negligible change in the thermal characteristics of the parent matrix is observed. The particles can be embedded easily in carbon fiber as well as glass fiber reinforced epoxy structures.</p>10aauthentication10abarcoding10acomposites10aembedded nanoparticles10aEpoxy1 aPansare, Amol, V.1 aKhairkar, Shyam, R.1 aShedge, Amol, A.1 aChhatre, Shraddha, Y.1 aPatil, Vishwanath, R.1 aNagarkar, Amit, A.  uhttps://library.ncl.res.in/content/situ-nanoparticle-embedding-authentication-epoxy-composites02026nas a2200277   4500008004100000022001400041245012700055210006900182260000800251300001100259490000800270520106100278653003201339653002401371653001901395653003301414100002401447700000501471700002101476700002601497700001901523700002801542700002601570700002301596856012901619       2020                        eng d  a0045-653500aHydrophobic interpenetrating polyamide-PDMS membranes for desalination, pesticides removal and enhanced chlorine tolerance0 aHydrophobic interpenetrating polyamidePDMS membranes for desalin  cNOV  a1271790 v2583 a<p>Hydrophobic membranes for desalination and toxic organic pollutant removal have been fabricated using polyamide - PDMS (polydimethylsiloxane) chemistries in a one-step protocol. The curing of polyamide and PDMS are orthogonal and co-curing both networks imparts hydrophobicity to the thin film composite membranes. The membranes exhibit increased adsorption of pesticides from the feed water along with maintaining excellent salt rejection capability (97% NaCl rejection), thus giving the membranes a multifunctional character. Three toxic pesticides have been used in this study to demonstrate the viability of combining osmosis desalination technology with organic matter adsorption. The membranes also show excellent resistance to fouling by toxic pesticides (85% salt rejection vs 67% for commercial membranes in the presence of pesticides) and significantly improved chlorine tolerance (93.8% salt rejection vs 86.5% for commercial membranes after 20 h of exposure to sodium hypochlorite solution). (C) 2020 Elsevier Ltd. All rights reserved.</p>
10aPDMS (Polydimethylsiloxane)10aPesticide rejection10aSalt rejection10aWater purification membranes1 aKhairkar, Shyam, R.1 a1 aShedge, Amol, A.1 aChhatre, Shraddha, Y.1 aSuresh, A., K.1 aChakrabarti, Subhananda1 aPatil, Vishwanath, R.1 aNagarkar, Amit, A.  uhttps://library.ncl.res.in/content/hydrophobic-interpenetrating-polyamide-pdms-membranes-desalination-pesticides-removal-and02808nas a2200289   4500008004100000022001400041245012000055210006900175260000800244300001100252490000800263520181600271653003102087653001802118653002202136653002402158653001802182100002102200700002502221700002402246700002602270700002002296700002302316700002202339700002602361856013102387       2020                        eng d  a0162-013400aNanocomposite of functional silver metal containing curcumin biomolecule model systems: Protein BSA bioavailability0 aNanocomposite of functional silver metal containing curcumin bio  cNOV  a1112100 v2123 a<p>Curcumin, a constituent of Curcuma longa L-Zingiberaceae is used in traditional Indian and worldwide medicine and shows anticancer and antioxidant properties. Curcumin has numerous biological and pharmacological ac-tivities but due to its hydrophobic nature, the major drawback is poor absorption and rapid elimination, rendering curcumin with the tag of a poor biomaterial. Hence, there is a need to develop functional metal containing curcumin model systems (FMCCMS) as a metallo-biomolecule to enhance the bioavailability of curcumin. We designed the interaction of silver metal ion with curcumin to form curcumin-silver nanocomposite (CURC-AgNCP) via ultrasonic synthetic route. Formations of FMCCMS were characterized by spectroscopic techniques. The crystalline face-centered cubic pattern and particle size of the nanocomposite was evaluated using X-ray diffraction and high-resolution transmission electron microscopy. The bonding of silver metal to curcumin was confirmed by X-ray photon spectroscopy. Interaction of the nanocomposite with bovine serum albumin (BSA) protein was performed using excitation, emission, and circular dichroism spectroscopy. In binding interaction of BSA, the negative value of Delta S degrees (-358.04 J mol(-1) K-1) and Delta H degrees (-129.42 KJ mol(-1)) demonstrates the hydrophilic nature of the nanocomposite. The binding distance r evaluated according to the Forster resonance energy transfer theory and was 4.69 nm for CURC-AgNCP, which suggested non-radiative transfer of energy between CURC-AgNCP and BSA. The role of FMCCMS metallo-biomolecule CURC-AgNCP in medicine for cancer activity can have immense importance and hence we performed Sulphorhodamine B based in-vitro cytotoxicity assay on human breast cancer Michigan Cancer Foundation-7 cell line.</p>
10aAg-based CURC biomaterials10aBreast cancer10aMetal in medicine10aMetallobiomolecules10aNanocomposite1 aShedge, Amol, A.1 aPansare, Shubham, V.1 aKhairkar, Shyam, R.1 aChhatre, Shraddha, Y.1 aChakrabarti, S.1 aNagarkar, Amit, A.1 aPansare, Amol, V.1 aPatil, Vishwanath, R.  uhttps://library.ncl.res.in/content/nanocomposite-functional-silver-metal-containing-curcumin-biomolecule-model-systems-protein01986nas a2200265   4500008004100000022001400041245008500055210006900140260000800209300001600217490000700233520110200240653003401342653002101376653003601397653002601433100000501459700002601464700002401490700002201514700002101536700002801557700002301585856011201608       2020                        eng d  a1944-824400a"Shape-coding'': morphology-based information system for polymers and composites0 aShapecoding morphologybased information system for polymers and   cJUN  a27555-275610 v123 a<p>Fiber-reinforced composites have become the material of choice for aerospace structures because of their favorable strength-to-weight ratio. Given the increasing amounts of counterfeit composite parts showing up in the complex aerospace supply chain, it is absolutely vital to track a composite part throughout its lifecycle-from production to usage and to disposal. Existing barcoding methods are invasive, affect the structural properties of composites, and/or are vulnerable to tampering. We describe a universal method to store information in fiber-reinforced composites based on solid-state in situ reduction leading to embedded nanoparticles with controlled morphologies. This simple, cost-effective, mild, surfactant-free, and one-step protocol for the fabrication of embedded platinum nanostructures leads to morphology-based barcodes for polymeric composites. We also describe a coding methodology wherein a 1 x 1 cm code can represent 3.4 billion parts to 95 trillion parts, depending on the resolution required along with access to morphology-based chemical encryption systems.</p>
10abarcoding chemical encryption10aepoxy composites10ananoparticle morphology control10asolid-state synthesis1 a1 aChhatre, Shraddha, Y.1 aKhairkar, Shyam, R.1 aBell, Jeffrey, G.1 aBarbezat, Michel1 aChakrabarti, Subhananda1 aNagarkar, Amit, A.  uhttps://library.ncl.res.in/content/shape-coding-morphology-based-information-system-polymers-and-composites02127nas a2200265   4500008004100000022001400041245010800055210006900163260000800232300001400240490000700254520123000261653001501491653001701506653001601523653003801539100002401577700002101601700002101622700002201643700002701665700002601692700001801718856012501736       2022                        eng d  a0170-083900aBiological macromolecule chitosan grafted co-polymeric composite: bio-adsorption probe on cationic dyes0 aBiological macromolecule chitosan grafted copolymeric composite   cNOV  a9441-94550 v793 a<p>
	Chitosan biological macromolecule is a versatile polymer; chemical modification has been carried out that lead to the formation of chitosan grafted polymers composites (Chito-g-PC). We proposed synthesis of six various Chito-g-PC as sorbents for toxic dyes. A novel graft copolymerization method based on radical polymerization with vinyl monomer like acrylic acid, acrylamide, N-isopropylacrylamide, methacrylic acid and polyacrylonitrile were utilized in order to address the large amount of swelling at four different pH buffers solution. The effect of initiator and monomer concentration, time and temperature on % grafting and % grafting efficiency were performed. Comparative characterization of Chito and Chito-g-PC were evaluated by SEM, XRD and FTIR, as well as solubility characteristics of the composites were determined by various pH buffer solution. Cationic toxic dyes Malachite green (MG) and Methylene blue (MB) were selected as the sorbet, and Chito-g-PC were used as biosorbents. Thermodynamic analysis showed that the sorption process was spontaneous and endothermic with an increased randomness. The sorption experiments were realized with six different Chito-g-PC for MG and MB at various pH.</p>
10aAcrylamide10aacrylic acid10aBio sorbent10aChitosan biological macromolecule1 aKhairkar, Shyam, R.1 aPansare, Shubham1 aShedge, Amol, A.1 aChhatre, Shraddha1 aKulal, Dnyaneshwar, K.1 aPatil, Vishwanath, R.1 aPansare, Amol  uhttps://library.ncl.res.in/content/biological-macromolecule-chitosan-grafted-co-polymeric-composite-bio-adsorption-probe02107nas a2200229   4500008004100000245009700041210006900138260000800207300001400215490000700229520131000236100001801546700002101564700002701585700002101612700002401633700002401657700002601681700002701707700002601734856011701760       2022                        eng d00aDeciphering the sensing of alpha-amyrin acetate with hs-DNA: a multipronged biological probe0 aDeciphering the sensing of alphaamyrin acetate with hsDNA a mult  cJAN  a1238-12430 v123 aIn this study, we focus on the biomimetic development of small molecules and their biological sensing with DNA. The binding of herring sperm deoxyribonucleic acid (hs-DNA) with naturally occurring bioactive small molecule alpha-amyrin acetate (alpha-AA), a biomimetic - isolated from the leaves of Ficus (F.) arnottiana is investigated. Collective information from various imaging, spectroscopic and biophysical experiments provides evidence that alpha-AA is a minor groove sensor of hs-DNA and preferentially binds to the A-T-rich regions. Interactions of different concentrations of small molecule alpha-AA with hsDNA were evaluated via various analytical techniques such as UV-Vis, circular dichroism (CD) and fluorescence emission spectroscopy. Fluorescence emission spectroscopy results suggest that alpha-AA decreases the emission level of hsDNA. DNA minor groove sensor Hoechst 33258 and intercalative sensor EB, melting transition analysis (T-M) and viscosity analysis clarified that alpha-AA binds to hs-DNA via a groove site. Biophysical chemistry and molecular docking studies show that hydrophobic interactions play a major role in this binding. The present research deals with a natural product biosynthesis-linked chemical-biology interface sensor as a biological probe for alpha-AA: hs-DNA.1 aPansare, Amol1 aShedge, Amol, A.1 aSonawale, Maryappa, C.1 aPansare, Shubham1 aMahakal, Akshay, D.1 aKhairkar, Shyam, R.1 aChhatre, Shraddha, Y.1 aKulal, Dnyaneshwar, K.1 aPatil, Vishwanath, R.  uhttps://library.ncl.res.in/content/deciphering-sensing-alpha-amyrin-acetate-hs-dna-multipronged-biological-probe