The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
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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Materials research (São Carlos. Online) |
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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 |
_version_ |
1754212665413074944 |