Morphological, mechanical properties and biodegradability of biocomposite thermoplastic starch and polycaprolactone reinforced with sisal fibers

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dc.contributor.authorCampos, A.
dc.contributor.authorMarconcini, J. M.
dc.contributor.authorImam, S. H.
dc.contributor.authorKlamczynski, A.
dc.contributor.authorOrtis, W. J.
dc.contributor.authorWood, D. H.
dc.contributor.authorWilliams, T. G.
dc.contributor.authorMartins-Franchetti, S. M. [UNESP]
dc.contributor.authorMattoso, L. H. C.
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionARS
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:31:56Z
dc.date.available2014-05-20T15:31:56Z
dc.date.issued2012-04-01
dc.description.abstractThe incorporation of fibers as reinforcements in polymer composites has increased due to their renewability, low cost and biodegradability. In this study, sisal fibers were added to a polymer matrix of thermoplastic starch and polycaprolactone, both biodegradable polymers. Sisal fibers (5% and 10%) were extruded in a twin-screw extruder with thermoplastic starch/polycaprolactone (80:20 wt). Films were produced with a single extruder and analyzed by field emission gun scanning electron microscopy, mechanical tests, thermogravimetric analysis and differential scanning calorimetry. The morphology of the composites with 10% sisal fiber content presented an interface of fibers at the surface of the matrix, indicating poor adhesion, lower initial temperatures of thermal degradation, and decreased polycaprolactone crystallinity due to the decrease in lamellar thickness and the increase in crystalline disorder. The results were affected mainly by the lack of adhesion at the interface between the matrix and fibers. The interfacial shear strength between sisal and the matrix may be improved by chemical modification of the fiber surface.en
dc.description.affiliationEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Instrumentacao, Lab Nacl Nanotecnol Agronegocio, BR-13560970 São Carlos, SP, Brazil
dc.description.affiliationARS, Bioprod Chem & Engn Res Unit, WRRC, USDA, Washington, DC USA
dc.description.affiliationUniv Estadual Paulista, Dept Biochem & Microbiol, São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Biochem & Microbiol, São Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipFinanciadora de Estudos e Projetos (FINEP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 08/08264-9
dc.format.extent573-581
dc.identifierhttp://dx.doi.org/10.1177/0731684412441092
dc.identifier.citationJournal of Reinforced Plastics and Composites. London: Sage Publications Ltd, v. 31, n. 8, p. 573-581, 2012.
dc.identifier.doi10.1177/0731684412441092
dc.identifier.issn0731-6844
dc.identifier.urihttp://hdl.handle.net/11449/40949
dc.identifier.wosWOS:000302180900005
dc.language.isoeng
dc.publisherSage Publications Ltd
dc.relation.ispartofJournal of Reinforced Plastics and Composites
dc.relation.ispartofjcr1.471
dc.relation.ispartofsjr0,543
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectthermoplastic starchen
dc.subjectpolycaprolactoneen
dc.subjectsisal fiberen
dc.subjectextrusionen
dc.subjectbiopolymersen
dc.subjectcompositesen
dc.titleMorphological, mechanical properties and biodegradability of biocomposite thermoplastic starch and polycaprolactone reinforced with sisal fibersen
dc.typeArtigo
dcterms.licensehttp://www.uk.sagepub.com/aboutus/openaccess.htm
dcterms.rightsHolderSage Publications Ltd
unesp.author.orcid0000-0002-1499-2659[1]
unesp.author.orcid0000-0001-7586-1014[9]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

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