Reprocessability of PHB in extrusion: ATR-FTIR, tensile tests and thermal studies

Página do item simplificado
dc.citation.issue2
dc.citation.volume27
dc.contributor.authorRivas, Leonardo Fabio
dc.contributor.authorCasarin, Suzan Aline
dc.contributor.authorNepomuceno, Neymara Cavalcante
dc.contributor.authorAlencar, Marie Isabele
dc.contributor.authorMarcondes Agnelli, Jose Augusto
dc.contributor.authorde Medeiros, Eliton Souto
dc.contributor.authorWanderley Neto, Alcides de Oliveira
dc.contributor.authorde Oliveira, Mauricio Pinheiro [UNIFESP]
dc.contributor.authorde Medeiros, Antonio Marcos
dc.contributor.authorFerreira e Santos, Amelia Severino
dc.coverageSao Carlos
dc.date.accessioned2020-07-17T14:02:22Z
dc.date.available2020-07-17T14:02:22Z
dc.date.issued2017
dc.description.abstractMechanical recycling of biodegradable plastics has to be encouraged, since the consumption of energy and raw materials can be reduced towards a sustainable development in plastics materials. In this study, the evolution of thermal and mechanical properties, as well as structural changes of poly(hydroxybutyrate) (PHB) up to three extrusion cycles were investigated. Results indicated a significant reduction in mechanical properties already at the second extrusion cycle, with a reduction above 50% in the third cycle. An increase in the crystallinity index was observed due to chemicrystallization process during degradation by chain scission. On the other hand, significant changes in the chemical structure or in thermal stability of PHB cannot be detected by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analyses (TGA), respectively.en
dc.description.affiliationUniv Fed Rio Grande Norte UFRN, Dept Mat Engn DEMat, Natal, RN, Brazil
dc.description.affiliationUniv Fed Sao Carlos UFSCar, Dept Mat Engn DEMa, Sao Carlos, SP, Brazil
dc.description.affiliationUniv Fed Paraiba UFPB, Dept Mat Engn DEMAT, Joao Pessoa, Paraiba, Brazil
dc.description.affiliationUniv Fed Rio Grande Norte UFRN, Dept Chem DQ, Natal, RN, Brazil
dc.description.affiliationUniv Fed Sao Paulo UNIFESP, Inst Sci & Technol ICT, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo UNIFESP, Inst Sci & Technol ICT, Sao Jose Dos Campos, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipNational Foundation for Science and Technology Development (CNPq)
dc.format.extent122-128
dc.identifierhttp://dx.doi.org/10.1590/0104-1428.2406
dc.identifier.citationPolimeros-Ciencia E Tecnologia. Sao Carlos, v. 27, n. 2, p. 122-128, 2017.
dc.identifier.doi10.1590/0104-1428.2406
dc.identifier.fileS0104-14282017000200122.pdf
dc.identifier.issn0104-1428
dc.identifier.scieloS0104-14282017000200122
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/54765
dc.identifier.wosWOS:000407389300005
dc.language.isoeng
dc.publisherAssoc Brasil Polimeros
dc.relation.ispartofPolimeros-Ciencia E Tecnologia
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectbiopolymeren
dc.subjectdegradationen
dc.subjectPHBen
dc.subjectrecyclingen
dc.subjectreprocessingen
dc.titleReprocessability of PHB in extrusion: ATR-FTIR, tensile tests and thermal studiesen
dc.typeinfo:eu-repo/semantics/article
Arquivos
Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
S0104-14282017000200122.pdf
Tamanho:
1.44 MB
Formato:
Adobe Portable Document Format
Descrição:
Baixar
Coleções
ICT - Artigos