Synthesis and characterization of N-methylenephenyl phosphonic chitosan

Detalhes bibliográficos
Autor(a) principal: Jayakumar, R.
Data de Publicação: 2007
Outros Autores: Reis, R. L., Mano, J. F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/20198
Resumo: Chitosan is a natural based polymer obtained by alkaline deacetylation of chitin, exhibiting excellent properties such as non‐toxicity, biocompatibility and biodegradability. N‐Methylenephenyl phosphonic chitosan (NMPPC) is synthesized from chitosan by reacting with phenyl phosphonic acid using formaldehyde. The NMPPC was characterized by FTIR, 31P‐NMR, X‐ray diffraction, scanning electron microscopy, thermogravimeteric analysis and solubility studies. A significant decrease of molecular weight was observed in the NMPPC. The TGA studies suggested that NMPPC has less thermal stability than chitosan. The X‐ray diffraction analysis showed that NMPPC was amorphous in nature. The solubility property of the polymer was improved after the incorporation of a phenyl phosphonic group
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spelling Synthesis and characterization of N-methylenephenyl phosphonic chitosanNMPPCchitosanP-31-NMRthermal propertiesX-ray diffraction31 P-NMRScience & TechnologyChitosan is a natural based polymer obtained by alkaline deacetylation of chitin, exhibiting excellent properties such as non‐toxicity, biocompatibility and biodegradability. N‐Methylenephenyl phosphonic chitosan (NMPPC) is synthesized from chitosan by reacting with phenyl phosphonic acid using formaldehyde. The NMPPC was characterized by FTIR, 31P‐NMR, X‐ray diffraction, scanning electron microscopy, thermogravimeteric analysis and solubility studies. A significant decrease of molecular weight was observed in the NMPPC. The TGA studies suggested that NMPPC has less thermal stability than chitosan. The X‐ray diffraction analysis showed that NMPPC was amorphous in nature. The solubility property of the polymer was improved after the incorporation of a phenyl phosphonic groupTaylor and FrancisUniversidade do MinhoJayakumar, R.Reis, R. L.Mano, J. F.20072007-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/20198eng1060-132510.1080/10601320601077294info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:47:58Zoai:repositorium.sdum.uminho.pt:1822/20198Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:46:07.049726Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Synthesis and characterization of N-methylenephenyl phosphonic chitosan
title Synthesis and characterization of N-methylenephenyl phosphonic chitosan
spellingShingle Synthesis and characterization of N-methylenephenyl phosphonic chitosan
Jayakumar, R.
NMPPC
chitosan
P-31-NMR
thermal properties
X-ray diffraction
31 P-NMR
Science & Technology
title_short Synthesis and characterization of N-methylenephenyl phosphonic chitosan
title_full Synthesis and characterization of N-methylenephenyl phosphonic chitosan
title_fullStr Synthesis and characterization of N-methylenephenyl phosphonic chitosan
title_full_unstemmed Synthesis and characterization of N-methylenephenyl phosphonic chitosan
title_sort Synthesis and characterization of N-methylenephenyl phosphonic chitosan
author Jayakumar, R.
author_facet Jayakumar, R.
Reis, R. L.
Mano, J. F.
author_role author
author2 Reis, R. L.
Mano, J. F.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Jayakumar, R.
Reis, R. L.
Mano, J. F.
dc.subject.por.fl_str_mv NMPPC
chitosan
P-31-NMR
thermal properties
X-ray diffraction
31 P-NMR
Science & Technology
topic NMPPC
chitosan
P-31-NMR
thermal properties
X-ray diffraction
31 P-NMR
Science & Technology
description Chitosan is a natural based polymer obtained by alkaline deacetylation of chitin, exhibiting excellent properties such as non‐toxicity, biocompatibility and biodegradability. N‐Methylenephenyl phosphonic chitosan (NMPPC) is synthesized from chitosan by reacting with phenyl phosphonic acid using formaldehyde. The NMPPC was characterized by FTIR, 31P‐NMR, X‐ray diffraction, scanning electron microscopy, thermogravimeteric analysis and solubility studies. A significant decrease of molecular weight was observed in the NMPPC. The TGA studies suggested that NMPPC has less thermal stability than chitosan. The X‐ray diffraction analysis showed that NMPPC was amorphous in nature. The solubility property of the polymer was improved after the incorporation of a phenyl phosphonic group
publishDate 2007
dc.date.none.fl_str_mv 2007
2007-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/20198
url http://hdl.handle.net/1822/20198
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1060-1325
10.1080/10601320601077294
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Taylor and Francis
publisher.none.fl_str_mv Taylor and Francis
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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