Thermal behavior of cellulose acetate produced from homogeneous acetylation of bacterial cellulose

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorBarud, Hernane S.
dc.creatorde Araujo Junior, Adalberto M.
dc.creatorSantos, Daniele B.
dc.creatorde Assuncao, Rosana M. N.
dc.creatorMeireles, Carla S.
dc.creatorCerqueira, Daniel A.
dc.creatorRodrigues Filho, Guimes
dc.creatorRibeiro, Clovis Augusto
dc.creatorMessaddeq, Younes
dc.creatorRibeiro, Sidney José Lima
dc.date2014-05-20T14:20:21Z
dc.date2016-10-25T17:41:35Z
dc.date2014-05-20T14:20:21Z
dc.date2016-10-25T17:41:35Z
dc.date2008-05-30
dc.date.accessioned2017-04-05T22:34:02Z
dc.date.available2017-04-05T22:34:02Z
dc.identifierThermochimica Acta. Amsterdam: Elsevier B.V., v. 471, n. 1-2, p. 61-69, 2008.
dc.identifier0040-6031
dc.identifierhttp://hdl.handle.net/11449/26120
dc.identifierhttp://acervodigital.unesp.br/handle/11449/26120
dc.identifier10.1016/j.tca.2008.02.009
dc.identifierWOS:000256558400010
dc.identifier0000-0002-7984-5908
dc.identifierhttp://dx.doi.org/10.1016/j.tca.2008.02.009
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/870930
dc.descriptionCellulose acetate (CA) is one of the most important cellulose derivatives and its main applications are its use in membranes, films, fibers, plastics and filters. CAs are produced from cellulose sources such as: cotton, sugar cane bagasse, wood and others. One promissory source of cellulose is bacterial cellulose (BC). In this work, CA was produced from the homogeneous acetylation reaction of bacterial cellulose. Degree of substitution (DS) values can be controlled by the acetylation time. The characterization of CA samples showed the formation of a heterogeneous structure for CA samples submitted to a short acetylation time. A more homogeneous structure was produced for samples prepared with a long acetylation time. This fact changes the thermal behavior of the CA samples. Thermal characterization revealed that samples submitted to longer acetylation times display higher crystallinity and thermal stability than samples submitted to a short acetylation time. The observation of these characteristics is important for the production of cellulose acetate from this alternative source. (C) 2008 Elsevier B.V. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationThermochimica Acta
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectbacterial cellulose
dc.subjecthomogeneous acetylation
dc.subjectcellulose acetate
dc.subjectthermal properties
dc.titleThermal behavior of cellulose acetate produced from homogeneous acetylation of bacterial cellulose
dc.typeOtro


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