Synthesis and characterization of polyimides containing 4,4'-hexafluoroisopropylidene-bisphthalic

Detalhes bibliográficos
Autor(a) principal: Hung,Daniel Liu Chun
Data de Publicação: 1999
Outros Autores: Ho,Tong-Ing, Liaw,Der-Jang, Liaw,Been-Yang
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=S0104-14281999000400013
Resumo: This paper presents the synthesis and characterization of polyimides, which contain a 4,4'-hexafluoroisopropylidene-bisphthalic anhydride (6FDA) unit in the backbone. These polyimides are a result of the use of the traditional method of "one step". The reactions occur between equimolar of a dianhydride and an aromatic diamine in presence of the solvent dimethylacetamide (DMAc), then cyclo-dehydrided by adding the acetic anhydride and pyridine. In this work, the 6FDA was used as the dianhydride and four different diamines were investigated: 3,3',5,5'-Tetramethyl-2,2- bis[4-( 4-aminophenoxy) phenyl] propane; 2,2-bis[4-(4-aminophenoxy)-phenyl] hexafluoropropane; 1,3-bis(4-aminophenoxy)benzene and 2,2'-dimethyl-4,4'-bis(4-aminophenoxy)biphenyl. The four polyimides (PA, PB, PC and PD) were characterized by tensile strength, infrared, inherent viscosity, Differential Scanning Calorimeter (DSC) to get the glassy transition temperature (Tg) and Gel Permeation Chromatograph (GPC) to obtain the average molecular weight (Mn).
id ABPO-1_2be39cfb3b0e055a8cc59a95b887f87c
oai_identifier_str oai:scielo:S0104-14281999000400013
network_acronym_str ABPO-1
network_name_str Polímeros (São Carlos. Online)
repository_id_str
spelling Synthesis and characterization of polyimides containing 4,4'-hexafluoroisopropylidene-bisphthalicSynthesispolyimidesdianhydridediaminecharacterization6FDAThis paper presents the synthesis and characterization of polyimides, which contain a 4,4'-hexafluoroisopropylidene-bisphthalic anhydride (6FDA) unit in the backbone. These polyimides are a result of the use of the traditional method of "one step". The reactions occur between equimolar of a dianhydride and an aromatic diamine in presence of the solvent dimethylacetamide (DMAc), then cyclo-dehydrided by adding the acetic anhydride and pyridine. In this work, the 6FDA was used as the dianhydride and four different diamines were investigated: 3,3',5,5'-Tetramethyl-2,2- bis[4-( 4-aminophenoxy) phenyl] propane; 2,2-bis[4-(4-aminophenoxy)-phenyl] hexafluoropropane; 1,3-bis(4-aminophenoxy)benzene and 2,2'-dimethyl-4,4'-bis(4-aminophenoxy)biphenyl. The four polyimides (PA, PB, PC and PD) were characterized by tensile strength, infrared, inherent viscosity, Differential Scanning Calorimeter (DSC) to get the glassy transition temperature (Tg) and Gel Permeation Chromatograph (GPC) to obtain the average molecular weight (Mn).Associação Brasileira de Polímeros1999-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14281999000400013Polímeros v.9 n.4 1999reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/S0104-14281999000400013info:eu-repo/semantics/openAccessHung,Daniel Liu ChunHo,Tong-IngLiaw,Der-JangLiaw,Been-Yangeng2003-05-21T00:00:00Zoai:scielo:S0104-14281999000400013Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2003-05-21T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Synthesis and characterization of polyimides containing 4,4'-hexafluoroisopropylidene-bisphthalic
title Synthesis and characterization of polyimides containing 4,4'-hexafluoroisopropylidene-bisphthalic
spellingShingle Synthesis and characterization of polyimides containing 4,4'-hexafluoroisopropylidene-bisphthalic
Hung,Daniel Liu Chun
Synthesis
polyimides
dianhydride
diamine
characterization
6FDA
title_short Synthesis and characterization of polyimides containing 4,4'-hexafluoroisopropylidene-bisphthalic
title_full Synthesis and characterization of polyimides containing 4,4'-hexafluoroisopropylidene-bisphthalic
title_fullStr Synthesis and characterization of polyimides containing 4,4'-hexafluoroisopropylidene-bisphthalic
title_full_unstemmed Synthesis and characterization of polyimides containing 4,4'-hexafluoroisopropylidene-bisphthalic
title_sort Synthesis and characterization of polyimides containing 4,4'-hexafluoroisopropylidene-bisphthalic
author Hung,Daniel Liu Chun
author_facet Hung,Daniel Liu Chun
Ho,Tong-Ing
Liaw,Der-Jang
Liaw,Been-Yang
author_role author
author2 Ho,Tong-Ing
Liaw,Der-Jang
Liaw,Been-Yang
author2_role author
author
author
dc.contributor.author.fl_str_mv Hung,Daniel Liu Chun
Ho,Tong-Ing
Liaw,Der-Jang
Liaw,Been-Yang
dc.subject.por.fl_str_mv Synthesis
polyimides
dianhydride
diamine
characterization
6FDA
topic Synthesis
polyimides
dianhydride
diamine
characterization
6FDA
description This paper presents the synthesis and characterization of polyimides, which contain a 4,4'-hexafluoroisopropylidene-bisphthalic anhydride (6FDA) unit in the backbone. These polyimides are a result of the use of the traditional method of "one step". The reactions occur between equimolar of a dianhydride and an aromatic diamine in presence of the solvent dimethylacetamide (DMAc), then cyclo-dehydrided by adding the acetic anhydride and pyridine. In this work, the 6FDA was used as the dianhydride and four different diamines were investigated: 3,3',5,5'-Tetramethyl-2,2- bis[4-( 4-aminophenoxy) phenyl] propane; 2,2-bis[4-(4-aminophenoxy)-phenyl] hexafluoropropane; 1,3-bis(4-aminophenoxy)benzene and 2,2'-dimethyl-4,4'-bis(4-aminophenoxy)biphenyl. The four polyimides (PA, PB, PC and PD) were characterized by tensile strength, infrared, inherent viscosity, Differential Scanning Calorimeter (DSC) to get the glassy transition temperature (Tg) and Gel Permeation Chromatograph (GPC) to obtain the average molecular weight (Mn).
publishDate 1999
dc.date.none.fl_str_mv 1999-12-01
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=S0104-14281999000400013
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14281999000400013
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-14281999000400013
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.9 n.4 1999
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
_version_ 1754212583228833792