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Title of Journal: J Polym Res

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Abbravation: Journal of Polymer Research

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Springer Netherlands

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DOI

10.1002/aic.690190607

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ISSN

1572-8935

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Synthesis and characterization of polyvinyl alcoho

Authors: Deepti S Deshpande R Bajpai A K Bajpai
Publish Date: 2012/07/24
Volume: 19, Issue: 8, Pages: 9938-
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Abstract

Polymeric networks in the form of hydrogels offer possibilities to achieve desirable combination of properties that are generally not available in a single polymeric material With these objectives the present work focus on the synthesis of polyvinyl alcohol PVA based novel semiIPNs of varying compositions by redox polymerization method using NNmethylene bisacrylamide MBA as the crosslinker and acrylonitrile as the monomer The prepared semiIPNs have been examined for structural confirmation by FTIR analysis Crystalline features of the semiIPNs were studied by XRD technique which revealed that crystallinity in the membrane was mainly due to PVA The IPNs of various compositions have also been examined for their water sorption behavior and network parameters like average molecular weight between crosslinks Mc and crosslink density were calculated from water imbibition measurements The kinetics and mechanism of water sorption process were studied and related kinetic parameters were evaluated The DSC analysis of the prepared semiIPNs was also performed and it was found that the gels showed welldefined thermal behavior

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