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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampUmemura, Rodrigo Tosti-
dc.contributor.authorunicampFelisberti, Maria Isabel-
dc.typeArtigopt_BR
dc.titlePlasticization of poly(3-hydroxybutyrate) with triethyl citrate: thermal and mechanical properties, morphology, and kinetics of crystallizationpt_BR
dc.contributor.authorUmemura, Rodrigo T.-
dc.contributor.authorFelisberti, Maria Isabel-
dc.subjectBiopolímerospt_BR
dc.subjectPlastificantept_BR
dc.subject.otherlanguageBiopolymerspt_BR
dc.subject.otherlanguagePlasticizerpt_BR
dc.description.abstractPoly(3-hydroxybutyrate) (PHB), is one important biopolymer and a promising alternative to petroleum-based plastics. In this article, formulations of PHB and triethyl citrate (TEC) as plasticizer were prepared by melt extrusion. The effect of TEC on the mechanical, thermal, and morphological properties of PHB was investigated by tensile tests, impact resistance, dynamic-mechanical analysis, differential scanning calorimetry, polarized optical microscopy, and small- and wide-angle X-ray scattering. TEC acted as an efficient plasticizer for PHB, imparting gradual changes in the properties as the mass fraction of TEC increased. A reduction in the elastic modulus, an increase in the intensity of beta relaxation indicated a higher capacity of mechanical energy dissipation for the formulations containing higher mass fractions of TEC. TEC reduced its glass transition and melting temperatures, contributing to the increase of the processing window of the temperature and minimizing thermal degradation of PHB. TEC had a strong influence on the kinetics of crystallization, the morphology of the spherulites, and the crystalline structural parameters, such as long period, crystalline lamella, and interlamellar amorphous region thicknesses. Our study clarifies how the morphology of the PHB crystalline phase evolves in the presence of the plasticizer and with the time of crystallizationpt_BR
dc.relation.ispartofJournal of applied polymer sciencept_BR
dc.relation.ispartofabbreviationJ. appl. polym. sci.pt_BR
dc.publisher.cityHoboken, NJpt_BR
dc.publisher.countryEstados Unidospt_BR
dc.publisherJohn Wiley & Sonspt_BR
dc.date.issued2020-
dc.date.monthofcirculationSep.pt_BR
dc.language.isoengpt_BR
dc.rightsFechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0021-8995pt_BR
dc.identifier.eissn1097-4628pt_BR
dc.identifier.doi10.1002/app.49990pt_BR
dc.identifier.urlhttps://onlinelibrary.wiley.com/doi/abs/10.1002/app.49990pt_BR
dc.description.sponsorshipCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.description.sponsorshipCOORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPESpt_BR
dc.description.sponsorshipFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPpt_BR
dc.description.sponsordocumentnumber444392/2014-9pt_BR
dc.description.sponsordocumentnumbersem informaçãopt_BR
dc.description.sponsordocumentnumber2010/17804-7; 2015/25406-5pt_BR
dc.date.available2020-12-03T14:22:56Z-
dc.date.accessioned2020-12-03T14:22:56Z-
dc.description.provenanceSubmitted by Cintia Oliveira de Moura (cintiaom@unicamp.br) on 2020-12-03T14:22:56Z No. of bitstreams: 0en
dc.description.provenanceMade available in DSpace on 2020-12-03T14:22:56Z (GMT). No. of bitstreams: 0 Previous issue date: 2020en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/352939-
dc.contributor.departmentsem informaçãopt_BR
dc.contributor.departmentDepartamento de Físico-químicapt_BR
dc.contributor.unidadeInstituto de Químicapt_BR
dc.contributor.unidadeInstituto de Químicapt_BR
dc.identifier.source000572946600001pt_BR
dc.creator.orcid0000-0001-7624-7518pt_BR
dc.creator.orcid0000-0001-8311-9864pt_BR
dc.type.formArtigopt_BR
dc.identifier.articleide49990pt_BR
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