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Biobased films prepared from NaOH/thiourea aqueous solution of chitosan and linter cellulose

dc.rights.licenseopen
hal.structure.identifierInst Quim Sao Carlos [Univ Sao Paulo]
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorMORGADO, D. L.
hal.structure.identifierInst Quim Sao Carlos [Univ Sao Paulo]
dc.contributor.authorFROLLINI, Elisabete
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorCASTELLAN, Alain
hal.structure.identifierUniv Fed ABC
dc.contributor.authorROSA, D. S.
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 2 LCPO : Biopolymers & Bio-sourced Polymers
dc.contributor.authorCOMA, Veronique
dc.date.accessioned2020
dc.date.available2020
dc.date.created2011
dc.date.issued2011
dc.identifier.issn0969-0239
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20517
dc.description.abstractEnIn the present study, films based on linter cellulose and chitosan were prepared using an aqueous solution of sodium hydroxide (NaOH)/thiourea as the solvent system. The dissolution process of cellulose and chitosan in NaOH/thiourea aqueous solution was followed by the partial chain depolymerization of both biopolymers, which facilitates their solubilization. Biobased films with different chitosan/cellulose ratios were then elaborated by a casting method and subsequent solvent evaporation. They were characterized by X-ray analysis, scanning electron microscopy (SEM), atomic force microscopy (AFM), thermal analysis, and tests related to tensile strength and biodegradation properties. The SEM images of the biofilms with 50/50 and 60/40 ratio of chitosan/cellulose showed surfaces more wrinkled than the others. The AFM images indicated that higher the content of chitosan in the biobased composite film, higher is the average roughness value. It was inferred through thermal analysis that the thermal stability was affected by the presence of chitosan in the films; the initial temperature of decomposition was shifted to lower levels in the presence of chitosan. Results from the tests for tensile strength indicated that the blending of cellulose and chitosan improved the mechanical properties of the films and that an increase in chitosan content led to production of films with higher tensile strength and percentage of elongation. The degradation study in a simulated soil showed that the higher the crystallinity, the lower is the biodegradation rate.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subject.enNaOH/thiourea aqueous solution
dc.subject.enLinter cellulose
dc.subject.enChitosan
dc.subject.enBiobased composites
dc.title.enBiobased films prepared from NaOH/thiourea aqueous solution of chitosan and linter cellulose
dc.typeArticle de revue
dc.subject.halChimie/Polymères
bordeaux.journalCellulose
bordeaux.page699-712
bordeaux.volume18
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue3
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00679456
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00679456v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Cellulose&rft.date=2011&rft.volume=18&rft.issue=3&rft.spage=699-712&rft.epage=699-712&rft.eissn=0969-0239&rft.issn=0969-0239&rft.au=MORGADO,%20D.%20L.&FROLLINI,%20Elisabete&CASTELLAN,%20Alain&ROSA,%20D.%20S.&COMA,%20Veronique&rft.genre=article


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