Preparation and characterization of carboxymethylchitosan

Detalhes bibliográficos
Autor(a) principal: Abreu,Fernanda R. de
Data de Publicação: 2005
Outros Autores: Campana-Filho,Sérgio P.
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=S0104-14282005000200004
Resumo: Chitosan was reacted with monochloroacetic acid at room temperature for different reaction times (3h, 5h, 7h and 10h) and employing two chitosan/monochloroacetic acid molar ratios (1:4.3 or 1:8.6). The carboxymethylation of chitosan was confirmed by ¹H NMR and 13C NMR spectroscopy. The carboxymethylchitosans had average degrees of substitution ranging from 0.52 to 1.44 as determined by potentiometric and conductimetric analysis. The occurrence of N,O-carboxymethylation was also observed in all cases.
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spelling Preparation and characterization of carboxymethylchitosanChitosancarboxymethylchitosandegree of substitutioncharacterizationChitosan was reacted with monochloroacetic acid at room temperature for different reaction times (3h, 5h, 7h and 10h) and employing two chitosan/monochloroacetic acid molar ratios (1:4.3 or 1:8.6). The carboxymethylation of chitosan was confirmed by ¹H NMR and 13C NMR spectroscopy. The carboxymethylchitosans had average degrees of substitution ranging from 0.52 to 1.44 as determined by potentiometric and conductimetric analysis. The occurrence of N,O-carboxymethylation was also observed in all cases.Associação Brasileira de Polímeros2005-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282005000200004Polímeros v.15 n.2 2005reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/S0104-14282005000200004info:eu-repo/semantics/openAccessAbreu,Fernanda R. deCampana-Filho,Sérgio P.eng2005-11-07T00:00:00Zoai:scielo:S0104-14282005000200004Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2005-11-07T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Preparation and characterization of carboxymethylchitosan
title Preparation and characterization of carboxymethylchitosan
spellingShingle Preparation and characterization of carboxymethylchitosan
Abreu,Fernanda R. de
Chitosan
carboxymethylchitosan
degree of substitution
characterization
title_short Preparation and characterization of carboxymethylchitosan
title_full Preparation and characterization of carboxymethylchitosan
title_fullStr Preparation and characterization of carboxymethylchitosan
title_full_unstemmed Preparation and characterization of carboxymethylchitosan
title_sort Preparation and characterization of carboxymethylchitosan
author Abreu,Fernanda R. de
author_facet Abreu,Fernanda R. de
Campana-Filho,Sérgio P.
author_role author
author2 Campana-Filho,Sérgio P.
author2_role author
dc.contributor.author.fl_str_mv Abreu,Fernanda R. de
Campana-Filho,Sérgio P.
dc.subject.por.fl_str_mv Chitosan
carboxymethylchitosan
degree of substitution
characterization
topic Chitosan
carboxymethylchitosan
degree of substitution
characterization
description Chitosan was reacted with monochloroacetic acid at room temperature for different reaction times (3h, 5h, 7h and 10h) and employing two chitosan/monochloroacetic acid molar ratios (1:4.3 or 1:8.6). The carboxymethylation of chitosan was confirmed by ¹H NMR and 13C NMR spectroscopy. The carboxymethylchitosans had average degrees of substitution ranging from 0.52 to 1.44 as determined by potentiometric and conductimetric analysis. The occurrence of N,O-carboxymethylation was also observed in all cases.
publishDate 2005
dc.date.none.fl_str_mv 2005-06-01
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=S0104-14282005000200004
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282005000200004
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-14282005000200004
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.15 n.2 2005
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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