Sulfonated Styrene-Acrylic Acid Copolymers with pH-Indicator Property

Detalhes bibliográficos
Autor(a) principal: Fan,Xin
Data de Publicação: 2019
Outros Autores: Fan,Ping, Wu,Yuehuan
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000901941
Resumo: In this study, a polymer pH-indicator was synthesized by sulfonation of poly(styrene-co-acrylic acid) with concentrated sulfuric acid. The synthesized polymer pH-indicator exhibited pH-responsive color changes in aqueous solutions, being purple in alkaline medium (pH < 4), whereas yellow in acidic medium (pH > 9). The sulfonation process extent and polymer color were affected by time and temperature of the process, as well as acrylic acid (AA) content. The addition of acrylic acid was a crucial point for color change due to the facility of cyclic ketone structure to turn into phenol under acidic condition. Compared with low molecule pH-indicators, the sulfonated copolymer was prepared in form of films being repeatedly used as pH-indicator and easily removed from the acid-base medium.
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spelling Sulfonated Styrene-Acrylic Acid Copolymers with pH-Indicator PropertypolymerssulfonatedpH-indicatorreusabilityIn this study, a polymer pH-indicator was synthesized by sulfonation of poly(styrene-co-acrylic acid) with concentrated sulfuric acid. The synthesized polymer pH-indicator exhibited pH-responsive color changes in aqueous solutions, being purple in alkaline medium (pH < 4), whereas yellow in acidic medium (pH > 9). The sulfonation process extent and polymer color were affected by time and temperature of the process, as well as acrylic acid (AA) content. The addition of acrylic acid was a crucial point for color change due to the facility of cyclic ketone structure to turn into phenol under acidic condition. Compared with low molecule pH-indicators, the sulfonated copolymer was prepared in form of films being repeatedly used as pH-indicator and easily removed from the acid-base medium.Sociedade Brasileira de Química2019-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000901941Journal of the Brazilian Chemical Society v.30 n.9 2019reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0103-5053.20190107info:eu-repo/semantics/openAccessFan,XinFan,PingWu,Yuehuaneng2019-09-11T00:00:00Zoai:scielo:S0103-50532019000901941Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2019-09-11T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Sulfonated Styrene-Acrylic Acid Copolymers with pH-Indicator Property
title Sulfonated Styrene-Acrylic Acid Copolymers with pH-Indicator Property
spellingShingle Sulfonated Styrene-Acrylic Acid Copolymers with pH-Indicator Property
Fan,Xin
polymers
sulfonated
pH-indicator
reusability
title_short Sulfonated Styrene-Acrylic Acid Copolymers with pH-Indicator Property
title_full Sulfonated Styrene-Acrylic Acid Copolymers with pH-Indicator Property
title_fullStr Sulfonated Styrene-Acrylic Acid Copolymers with pH-Indicator Property
title_full_unstemmed Sulfonated Styrene-Acrylic Acid Copolymers with pH-Indicator Property
title_sort Sulfonated Styrene-Acrylic Acid Copolymers with pH-Indicator Property
author Fan,Xin
author_facet Fan,Xin
Fan,Ping
Wu,Yuehuan
author_role author
author2 Fan,Ping
Wu,Yuehuan
author2_role author
author
dc.contributor.author.fl_str_mv Fan,Xin
Fan,Ping
Wu,Yuehuan
dc.subject.por.fl_str_mv polymers
sulfonated
pH-indicator
reusability
topic polymers
sulfonated
pH-indicator
reusability
description In this study, a polymer pH-indicator was synthesized by sulfonation of poly(styrene-co-acrylic acid) with concentrated sulfuric acid. The synthesized polymer pH-indicator exhibited pH-responsive color changes in aqueous solutions, being purple in alkaline medium (pH < 4), whereas yellow in acidic medium (pH > 9). The sulfonation process extent and polymer color were affected by time and temperature of the process, as well as acrylic acid (AA) content. The addition of acrylic acid was a crucial point for color change due to the facility of cyclic ketone structure to turn into phenol under acidic condition. Compared with low molecule pH-indicators, the sulfonated copolymer was prepared in form of films being repeatedly used as pH-indicator and easily removed from the acid-base medium.
publishDate 2019
dc.date.none.fl_str_mv 2019-09-01
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=S0103-50532019000901941
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000901941
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.21577/0103-5053.20190107
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 Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.30 n.9 2019
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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