The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)

Detalhes bibliográficos
Autor(a) principal: Wellen,Renate Maria Ramos
Data de Publicação: 2015
Outros Autores: Canedo,Eduardo Luís, Lima,Camila Augusta Ventura, Araújo Júnior,Inaldo Cesar, Almeida,Yêda Medeiros Bastos de, Rabello,Marcelo Silveira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000200235
Resumo: Mechanical properties, morphology and nonisothermal crystallization of poly(3-hydroxybutyrate) (PHB) and blends of PHB and polystyrene (PS) were studied by tensile tests, scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). A two-phase structure composed by a PHB matrix and nearly spherical particles of PS was clearly noticed in SEM images. The presence of small amounts (0.5% to 3%) of amorphous PS affected the crystallinity of PHB, being more evident when high cooling rates were applied. The kinetics of nonisothermal crystallization was modeled according to Ozawa equation. The dependence of Ozawa parameters on temperature followed the same trend for PHB and PHB/PS blends; model parameters were found to be lower for the blends than for the neat PHB.
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spelling The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)poly(3-hydroxybutyrate) (PHB)polystyrene (PS)blendsnonisothermal crystallization kineticsOzawa modelMechanical properties, morphology and nonisothermal crystallization of poly(3-hydroxybutyrate) (PHB) and blends of PHB and polystyrene (PS) were studied by tensile tests, scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). A two-phase structure composed by a PHB matrix and nearly spherical particles of PS was clearly noticed in SEM images. The presence of small amounts (0.5% to 3%) of amorphous PS affected the crystallinity of PHB, being more evident when high cooling rates were applied. The kinetics of nonisothermal crystallization was modeled according to Ozawa equation. The dependence of Ozawa parameters on temperature followed the same trend for PHB and PHB/PS blends; model parameters were found to be lower for the blends than for the neat PHB.ABM, ABC, ABPol2015-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000200235Materials Research v.18 n.2 2015reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1516-1439.242213info:eu-repo/semantics/openAccessWellen,Renate Maria RamosCanedo,Eduardo LuísLima,Camila Augusta VenturaAraújo Júnior,Inaldo CesarAlmeida,Yêda Medeiros Bastos deRabello,Marcelo Silveiraeng2016-06-10T00:00:00Zoai:scielo:S1516-14392015000200235Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2016-06-10T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)
title The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)
spellingShingle The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)
Wellen,Renate Maria Ramos
poly(3-hydroxybutyrate) (PHB)
polystyrene (PS)
blends
nonisothermal crystallization kinetics
Ozawa model
title_short The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)
title_full The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)
title_fullStr The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)
title_full_unstemmed The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)
title_sort The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)
author Wellen,Renate Maria Ramos
author_facet Wellen,Renate Maria Ramos
Canedo,Eduardo Luís
Lima,Camila Augusta Ventura
Araújo Júnior,Inaldo Cesar
Almeida,Yêda Medeiros Bastos de
Rabello,Marcelo Silveira
author_role author
author2 Canedo,Eduardo Luís
Lima,Camila Augusta Ventura
Araújo Júnior,Inaldo Cesar
Almeida,Yêda Medeiros Bastos de
Rabello,Marcelo Silveira
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Wellen,Renate Maria Ramos
Canedo,Eduardo Luís
Lima,Camila Augusta Ventura
Araújo Júnior,Inaldo Cesar
Almeida,Yêda Medeiros Bastos de
Rabello,Marcelo Silveira
dc.subject.por.fl_str_mv poly(3-hydroxybutyrate) (PHB)
polystyrene (PS)
blends
nonisothermal crystallization kinetics
Ozawa model
topic poly(3-hydroxybutyrate) (PHB)
polystyrene (PS)
blends
nonisothermal crystallization kinetics
Ozawa model
description Mechanical properties, morphology and nonisothermal crystallization of poly(3-hydroxybutyrate) (PHB) and blends of PHB and polystyrene (PS) were studied by tensile tests, scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). A two-phase structure composed by a PHB matrix and nearly spherical particles of PS was clearly noticed in SEM images. The presence of small amounts (0.5% to 3%) of amorphous PS affected the crystallinity of PHB, being more evident when high cooling rates were applied. The kinetics of nonisothermal crystallization was modeled according to Ozawa equation. The dependence of Ozawa parameters on temperature followed the same trend for PHB and PHB/PS blends; model parameters were found to be lower for the blends than for the neat PHB.
publishDate 2015
dc.date.none.fl_str_mv 2015-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000200235
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000200235
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1516-1439.242213
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.18 n.2 2015
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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