Effect of Graphite Nanosheets on Properties of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

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dc.contributor.authorMontagna, Larissa Stieven [UNIFESP]
dc.contributor.authorMontanheiro, Thais Larissa do Amaral [UNIFESP]
dc.contributor.authorBarros Machado, Joao Paulo
dc.contributor.authorPassador, Fabio Roberto [UNIFESP
dc.contributor.authorLemes, Ana Paula [UNIFESP]
dc.contributor.authorRezende, Mirabel Cerqueira [UNIFESP]
dc.coverageLondon
dc.date.accessioned2020-07-31T12:46:37Z
dc.date.available2020-07-31T12:46:37Z
dc.date.issued2017
dc.description.abstractThe influence of different contents, 0.25, 0.50, and 1.00 wt%, of graphite nanosheets (GNS) on the properties of poly(3-hydroxybutyrate- co-3-hydroxyvalerate) (PHBV) nanocomposites obtained by solution casting method has been studied. GNS were prepared by three steps: intercalation (chemical exfoliation), expansion (thermal treatment), and the GNS obtainment (physical treatment by ultrasonic exfoliation). X-ray diffraction (XRD), Raman spectroscopy, and field emission gun-scanning electron microscopy (FE-SEM) showed that the physical, chemical, and thermal treatments preserved the graphite sheets structure. XRD and Raman results also showed that GNS were dispersed in the PHBV matrix. The degree of crystallinity (Xc) of the nanocomposites did not change when the graphite nanosheets were added. However, the GNS acted as nucleation agent for crystallizationen
dc.description.abstractthat is, in the second heating the samples containing GNS showed two melting peaks. The addition the GNS did not change the thermal stability of the PHBV.en
dc.description.affiliationFed Univ Sao Paulo UNIFESP, Grp Polymers & Macromol, Inst Sci & Technol, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationNatl Inst Space Res INPE, Associated Lab Sensors & Mat LAS, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnifespInstitute of Science and Technology, Universidade Federal de São Paulo (UNIFESP), Group of Polymers and Macromolecules, São José dos Campos, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIDCNPq: 303287/2013-6
dc.description.sponsorshipIDCNPq: 158961/2014-5
dc.format.extent-
dc.identifierhttp://dx.doi.org/10.1155/2017/9316761
dc.identifier.citationInternational Journal Of Polymer Science. London, v. , p. -, 2017.
dc.identifier.doi10.1155/2017/9316761
dc.identifier.fileWOS000401421400001.pdf
dc.identifier.issn1687-9422
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/56301
dc.identifier.wosWOS:000401421400001
dc.language.isoeng
dc.publisherHindawi Ltd
dc.relation.ispartofInternational Journal Of Polymer Science
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleEffect of Graphite Nanosheets on Properties of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)en
dc.typeinfo:eu-repo/semantics/article
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