Thermal degradation of polymer systems having liquid crystalline oligoester segment

Detalhes bibliográficos
Autor(a) principal: Matroniani,Renato
Data de Publicação: 2017
Outros Autores: Wang,Shu Hui
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Polímeros (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000400280
Resumo: Abstract Block copolymers and blends comprised by liquid crystalline oligoester and polystyrene were prepared and their thermal stability were characterized by thermogravimetric analysis (TGA). The samples have shown three main decomposition temperatures due to (1) lost of flexible chain and decomposition of mesogenic segment, (2) decomposition of polystyrene and (3) final decomposition of oligoester rigid segment. Both copolymers and polymer blends presented lower thermal stability compared to polystyrene and oligoester. The residual mass after heating at 600 °C in copolymers and polymer blends were lower than those found in the oligoesters. A degradative process of aromatic segments of oligoester induced by decomposition of polystyrene is suggested.
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spelling Thermal degradation of polymer systems having liquid crystalline oligoester segmentblendsliquid crystalline oligoesterthermal degradationthermal stabilityAbstract Block copolymers and blends comprised by liquid crystalline oligoester and polystyrene were prepared and their thermal stability were characterized by thermogravimetric analysis (TGA). The samples have shown three main decomposition temperatures due to (1) lost of flexible chain and decomposition of mesogenic segment, (2) decomposition of polystyrene and (3) final decomposition of oligoester rigid segment. Both copolymers and polymer blends presented lower thermal stability compared to polystyrene and oligoester. The residual mass after heating at 600 °C in copolymers and polymer blends were lower than those found in the oligoesters. A degradative process of aromatic segments of oligoester induced by decomposition of polystyrene is suggested.Associação Brasileira de Polímeros2017-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000400280Polímeros v.27 n.4 2017reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/0104-1428.2423info:eu-repo/semantics/openAccessMatroniani,RenatoWang,Shu Huieng2017-12-08T00:00:00Zoai:scielo:S0104-14282017000400280Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2017-12-08T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Thermal degradation of polymer systems having liquid crystalline oligoester segment
title Thermal degradation of polymer systems having liquid crystalline oligoester segment
spellingShingle Thermal degradation of polymer systems having liquid crystalline oligoester segment
Matroniani,Renato
blends
liquid crystalline oligoester
thermal degradation
thermal stability
title_short Thermal degradation of polymer systems having liquid crystalline oligoester segment
title_full Thermal degradation of polymer systems having liquid crystalline oligoester segment
title_fullStr Thermal degradation of polymer systems having liquid crystalline oligoester segment
title_full_unstemmed Thermal degradation of polymer systems having liquid crystalline oligoester segment
title_sort Thermal degradation of polymer systems having liquid crystalline oligoester segment
author Matroniani,Renato
author_facet Matroniani,Renato
Wang,Shu Hui
author_role author
author2 Wang,Shu Hui
author2_role author
dc.contributor.author.fl_str_mv Matroniani,Renato
Wang,Shu Hui
dc.subject.por.fl_str_mv blends
liquid crystalline oligoester
thermal degradation
thermal stability
topic blends
liquid crystalline oligoester
thermal degradation
thermal stability
description Abstract Block copolymers and blends comprised by liquid crystalline oligoester and polystyrene were prepared and their thermal stability were characterized by thermogravimetric analysis (TGA). The samples have shown three main decomposition temperatures due to (1) lost of flexible chain and decomposition of mesogenic segment, (2) decomposition of polystyrene and (3) final decomposition of oligoester rigid segment. Both copolymers and polymer blends presented lower thermal stability compared to polystyrene and oligoester. The residual mass after heating at 600 °C in copolymers and polymer blends were lower than those found in the oligoesters. A degradative process of aromatic segments of oligoester induced by decomposition of polystyrene is suggested.
publishDate 2017
dc.date.none.fl_str_mv 2017-12-01
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=S0104-14282017000400280
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000400280
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-1428.2423
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 Associação Brasileira de Polímeros
publisher.none.fl_str_mv Associação Brasileira de Polímeros
dc.source.none.fl_str_mv Polímeros v.27 n.4 2017
reponame:Polímeros (São Carlos. Online)
instname:Associação Brasileira de Polímeros (ABPol)
instacron:ABPO
instname_str Associação Brasileira de Polímeros (ABPol)
instacron_str ABPO
institution ABPO
reponame_str Polímeros (São Carlos. Online)
collection Polímeros (São Carlos. Online)
repository.name.fl_str_mv Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)
repository.mail.fl_str_mv ||revista@abpol.org.br
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