Investigation of cellulose acetate viscoelastic properties in different solvents and microstructure

dc.creatorFerrarezi, MMF
dc.creatorRodrigues, GV
dc.creatorFelisberti, MI
dc.creatorGoncalves, MD
dc.date2013
dc.dateSEP
dc.date2014-07-30T14:35:12Z
dc.date2015-11-26T16:35:35Z
dc.date2014-07-30T14:35:12Z
dc.date2015-11-26T16:35:35Z
dc.date.accessioned2018-03-28T23:18:07Z
dc.date.available2018-03-28T23:18:07Z
dc.identifierEuropean Polymer Journal. Pergamon-elsevier Science Ltd, v. 49, n. 9, n. 2730, n. 2737, 2013.
dc.identifier0014-3057
dc.identifierWOS:000323803300036
dc.identifier10.1016/j.eurpolymj.2013.06.007
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/60613
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/60613
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1271561
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThis paper deals with the effect of solvent on the viscoelastic properties and microstructure of cellulose acetate (CA) by means of rheological measurements, dynamic-mechanical analysis and scanning electron microscopy. Acetone, acetic acid, dimethylacetamide (DMAc) and dimethylformamide (DMF) were used as good solvents and water as a non-solvent. The addition of water in the cellulose acetate/solvent mixture led to the development of an intense shear thinning behavior, as it caused the formation of CA agglomerates which were disrupted in a steady shearing condition. Apart from this, a three-dimensional elastic gel behavior in the CA/DMF/water and CA/DMAc/water solutions was observed during dynamical rheological analysis. The formation of CA agglomerates was controlled by the solvent type and resulted in microstructure changes, going from a dense structure to a porous one, and also influenced the CA chain rigidity and consequently the glass transition temperatures of the CA films. (C) 2013 Elsevier Ltd. All rights reserved.
dc.description49
dc.description9
dc.descriptionSI
dc.description2730
dc.description2737
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationEuropean Polymer Journal
dc.relationEur. Polym. J.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectCellulose acetate
dc.subjectRheology
dc.subjectMicrostructure
dc.subjectElastic gel
dc.subjectSolvent effect
dc.subjectPhase-separation
dc.subjectDilute-solution
dc.subjectBiodegradable Polymers
dc.subjectPoly(vinyl Alcohol)
dc.subjectMembrane Formation
dc.subjectGelation Behavior
dc.subjectMixed-solvent
dc.subjectPerformance
dc.subjectPolysaccharide
dc.subjectSchizophyllan
dc.titleInvestigation of cellulose acetate viscoelastic properties in different solvents and microstructure
dc.typeArtículos de revistas


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