@article { ISI:000343341100006, title = {Synthesis and characterization of hypercrosslinked hydroxyl functionalized co-polymer beads}, journal = {European Polymer Journal}, volume = {59}, year = {2014}, month = {OCT}, pages = {46-58}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

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.

}, keywords = {Copolymer, Morphology, surface area, Suspension polymerization, Swelling ratio}, issn = {0014-3057}, doi = {10.1016/j.eurpolymj.2014.07.001}, author = {Mane, Sachin and Ponrathnam, Surendra and Chavan, Nayaku} } @article { ISI:000363841700011, title = {Synthesis and characterization of thermotropic liquid crystalline polyimides}, journal = {Bulletin of Materials Science}, volume = {38}, number = {6}, year = {2015}, month = {OCT}, pages = {1553-1559}, publisher = {INDIAN ACAD SCIENCES}, address = {C V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIA}, abstract = {

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.

}, keywords = {Diamine, liquid crystalline polymer, mesogen, optical microscopy textures, pyromellitic dianhydride}, issn = {0250-4707}, doi = {10.1007/s12034-015-0975-z}, author = {Mane, Sachin and Rajan, C. R. and Ponrathnam, Surendra and Chavan, Nayaku} } @article { ISI:000362736300014, title = {Selective solid-phase extraction of metal for water decontamination}, journal = {Journal of Applied Polymer Science}, volume = {133}, number = {1}, year = {2016}, month = {JAN}, pages = {42849}, publisher = {WILEY-BLACKWELL}, address = {111 RIVER ST, HOBOKEN 07030-5774, NJ USA}, abstract = {

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.

}, keywords = {Adsorption, copolymers, crosslinking, kinetics, radical polymerization}, issn = {0021-8995}, doi = {10.1002/app.42849}, author = {Mane, Sachin and Ponrathnam, Surendra and Chavan, Nayaku} }