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Biodegradation of PVP-CMC hydrogel film: A useful food packaging material

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dc.title Biodegradation of PVP-CMC hydrogel film: A useful food packaging material en
dc.contributor.author Roy, Niladri
dc.contributor.author Saha, Nabanita
dc.contributor.author Kitano, Takeshi
dc.contributor.author Sáha, Petr
dc.relation.ispartof Carbohydrate Polymers
dc.identifier.issn 0144-8617 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2012
utb.relation.volume 89
utb.relation.issue 2
dc.citation.spage 346
dc.citation.epage 353
dc.type article
dc.language.iso en
dc.publisher Pergamon Elsevier Science Ltd. en
dc.identifier.doi 10.1016/j.carbpol.2012.03.008
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0144861712002196
dc.subject Biodegradation en
dc.subject CMC en
dc.subject Food packaging en
dc.subject Hydrogel en
dc.subject PVP en
dc.description.abstract Hydrogels can offer new opportunities for the design of efficient packaging materials with desirable properties (i.e. durability, biodegradability and mechanical strength). It is a promising and emerging concept, as most of the biopolymer based hydrogels are supposed to be biodegradable, they can be considered as alternative eco-friendly packaging materials. This article reports about synthetic (polyvinylpyrrolidone (PVP)) and biopolymer (carboxymethyl cellulose (CMC)) based a novel hydrogel film and its nature of biodegradability under controlled environmental condition. The dry hydrogel films were prepared by solution casting method and designated as 'PVP-CMC hydrogel films'. The hydrogel film containing PVP and CMC in a ratio of 20:80 shows best mechanical properties among all the test samples (i.e. 10:90, 20:80, 50:50, 80:20 and 90:10). Thus, PVP-CMC hydrogel film of 20:80 was considered as a useful food packaging material and further experiments were carried out with this particular hydrogel film. Biodegradation of the PVP-CMC hydrogel films were studied in liquid state (Czapec-Dox liquid medium + soil extracts) until 8 weeks. Variation in mechanical, viscoelastic properties and weight loss of the hydrogel films with time provide the direct evidence of biodegradation of the hydrogels. About 38% weight loss was observed within 8 weeks. FTIR spectra of the hydrogel films (before and after biodegradation) show shifts of the peaks and also change in the peak intensities, which refer to the physico-chemical change in the hydrogel structure and SEM views of the hydrogels show how internal structure of the PVP-CMC film changes in the course of biodegradation. © 2012 Elsevier Ltd. All rights reserved. en
utb.faculty Faculty of Technology
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1002830
utb.identifier.rivid RIV/70883521:28110/12:43867839!RIV13-MSM-28110___
utb.identifier.rivid RIV/70883521:28610/12:43867839!RIV13-MSM-28610___
utb.identifier.obdid 43867927
utb.identifier.scopus 2-s2.0-84861094121
utb.identifier.wok 000304632900006
utb.identifier.coden CAPOD
utb.source j-scopus
dc.date.accessioned 2012-06-04T11:34:14Z
dc.date.available 2012-06-04T11:34:14Z
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Roy, Niladri
utb.contributor.internalauthor Saha, Nabanita
utb.contributor.internalauthor Kitano, Takeshi
utb.contributor.internalauthor Sáha, Petr
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