Study of chitosans interaction with Cu(II) from the corresponding sulfate and chloride salts
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s10570-015-0673-4 http://hdl.handle.net/11449/160792 |
Resumo: | The interaction of copper ions with chitosan and three synthesized derivatives with different chelating centers, N-benzylidene chitosan, N-benzyl chitosan and poly-N-(4-(4-R-methoxyphenyl) diazenyl)benzyl-chitosan using CuSO4 center dot 5H(2)O and CuCl2 center dot 2H(2)O salts was studied. The content of Cu2+ in the complexes was determined by atomic absorption spectrometry and the results showed that chitosan exhibited higher chelating capacity for both salts. Morphological changes of derivatives and complexes were demonstrated by SEM-EDS. In addition, the presence of some crystals attributed to copper sulfate adsorbed on the polymer surface was also observed, which indicates that part of the metal content is in the salt adsorbed and might influence in the use of the materials for further application studies. This result was supported by Raman spectroscopy results in which vibrations of O= S=O groups were observed. X-ray diffraction patterns showed that the chemical modification of chitosan and formation of complexes resulted in the decrease of crystallinity. Electron paramagnetic resonance was used to investigate structural aspects of the materials complexed with Cu2+ ions in the solid state. |
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Repositório Institucional da UNESP |
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Study of chitosans interaction with Cu(II) from the corresponding sulfate and chloride saltsChitosanDerivativesCopperComplexesThe interaction of copper ions with chitosan and three synthesized derivatives with different chelating centers, N-benzylidene chitosan, N-benzyl chitosan and poly-N-(4-(4-R-methoxyphenyl) diazenyl)benzyl-chitosan using CuSO4 center dot 5H(2)O and CuCl2 center dot 2H(2)O salts was studied. The content of Cu2+ in the complexes was determined by atomic absorption spectrometry and the results showed that chitosan exhibited higher chelating capacity for both salts. Morphological changes of derivatives and complexes were demonstrated by SEM-EDS. In addition, the presence of some crystals attributed to copper sulfate adsorbed on the polymer surface was also observed, which indicates that part of the metal content is in the salt adsorbed and might influence in the use of the materials for further application studies. This result was supported by Raman spectroscopy results in which vibrations of O= S=O groups were observed. X-ray diffraction patterns showed that the chemical modification of chitosan and formation of complexes resulted in the decrease of crystallinity. Electron paramagnetic resonance was used to investigate structural aspects of the materials complexed with Cu2+ ions in the solid state.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Programa de Pos-graduacao em Ciencia e Tecnologia de Materiais (POSMAT)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Univ Estadual Paulista, Dept Fis Quim & Biol, Lab Quim Organ Fina, BR-19060900 Presidente Prudente, SP, BrazilUniv Estadual Paulista, Dept Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, BrazilUniv Sao Paulo, Dept Fis, Lab Biofis Mol, Fac Filosofia Ciencias & Letras Ribeirao Preto, BR-14049 Ribeirao Preto, SP, BrazilUniv Estadual Paulista, Dept Fis Quim & Biol, Lab Quim Organ Fina, BR-19060900 Presidente Prudente, SP, BrazilUniv Estadual Paulista, Dept Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, BrazilFAPESP: 2012/13901-3SpringerUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Pereira, Fernanda Stuani [UNESP]Souza, Glenda Goncalves de [UNESP]Moraes, Paula G. P. [UNESP]Barroso, Rafael PiancaLanfredi, Silvania [UNESP]Gomes, Homero Marques [UNESP]Costa-Filho, Antonio JosePerez Gonzalez, Eduardo Rene [UNESP]2018-11-26T16:16:46Z2018-11-26T16:16:46Z2015-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2391-2407application/pdfhttp://dx.doi.org/10.1007/s10570-015-0673-4Cellulose. Dordrecht: Springer, v. 22, n. 4, p. 2391-2407, 2015.0969-0239http://hdl.handle.net/11449/16079210.1007/s10570-015-0673-4WOS:000361003100020WOS000361003100020.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCellulose1,047info:eu-repo/semantics/openAccess2024-06-19T12:45:22Zoai:repositorio.unesp.br:11449/160792Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:03:12.515483Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Study of chitosans interaction with Cu(II) from the corresponding sulfate and chloride salts |
title |
Study of chitosans interaction with Cu(II) from the corresponding sulfate and chloride salts |
spellingShingle |
Study of chitosans interaction with Cu(II) from the corresponding sulfate and chloride salts Pereira, Fernanda Stuani [UNESP] Chitosan Derivatives Copper Complexes |
title_short |
Study of chitosans interaction with Cu(II) from the corresponding sulfate and chloride salts |
title_full |
Study of chitosans interaction with Cu(II) from the corresponding sulfate and chloride salts |
title_fullStr |
Study of chitosans interaction with Cu(II) from the corresponding sulfate and chloride salts |
title_full_unstemmed |
Study of chitosans interaction with Cu(II) from the corresponding sulfate and chloride salts |
title_sort |
Study of chitosans interaction with Cu(II) from the corresponding sulfate and chloride salts |
author |
Pereira, Fernanda Stuani [UNESP] |
author_facet |
Pereira, Fernanda Stuani [UNESP] Souza, Glenda Goncalves de [UNESP] Moraes, Paula G. P. [UNESP] Barroso, Rafael Pianca Lanfredi, Silvania [UNESP] Gomes, Homero Marques [UNESP] Costa-Filho, Antonio Jose Perez Gonzalez, Eduardo Rene [UNESP] |
author_role |
author |
author2 |
Souza, Glenda Goncalves de [UNESP] Moraes, Paula G. P. [UNESP] Barroso, Rafael Pianca Lanfredi, Silvania [UNESP] Gomes, Homero Marques [UNESP] Costa-Filho, Antonio Jose Perez Gonzalez, Eduardo Rene [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Pereira, Fernanda Stuani [UNESP] Souza, Glenda Goncalves de [UNESP] Moraes, Paula G. P. [UNESP] Barroso, Rafael Pianca Lanfredi, Silvania [UNESP] Gomes, Homero Marques [UNESP] Costa-Filho, Antonio Jose Perez Gonzalez, Eduardo Rene [UNESP] |
dc.subject.por.fl_str_mv |
Chitosan Derivatives Copper Complexes |
topic |
Chitosan Derivatives Copper Complexes |
description |
The interaction of copper ions with chitosan and three synthesized derivatives with different chelating centers, N-benzylidene chitosan, N-benzyl chitosan and poly-N-(4-(4-R-methoxyphenyl) diazenyl)benzyl-chitosan using CuSO4 center dot 5H(2)O and CuCl2 center dot 2H(2)O salts was studied. The content of Cu2+ in the complexes was determined by atomic absorption spectrometry and the results showed that chitosan exhibited higher chelating capacity for both salts. Morphological changes of derivatives and complexes were demonstrated by SEM-EDS. In addition, the presence of some crystals attributed to copper sulfate adsorbed on the polymer surface was also observed, which indicates that part of the metal content is in the salt adsorbed and might influence in the use of the materials for further application studies. This result was supported by Raman spectroscopy results in which vibrations of O= S=O groups were observed. X-ray diffraction patterns showed that the chemical modification of chitosan and formation of complexes resulted in the decrease of crystallinity. Electron paramagnetic resonance was used to investigate structural aspects of the materials complexed with Cu2+ ions in the solid state. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08-01 2018-11-26T16:16:46Z 2018-11-26T16:16:46Z |
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://dx.doi.org/10.1007/s10570-015-0673-4 Cellulose. Dordrecht: Springer, v. 22, n. 4, p. 2391-2407, 2015. 0969-0239 http://hdl.handle.net/11449/160792 10.1007/s10570-015-0673-4 WOS:000361003100020 WOS000361003100020.pdf |
url |
http://dx.doi.org/10.1007/s10570-015-0673-4 http://hdl.handle.net/11449/160792 |
identifier_str_mv |
Cellulose. Dordrecht: Springer, v. 22, n. 4, p. 2391-2407, 2015. 0969-0239 10.1007/s10570-015-0673-4 WOS:000361003100020 WOS000361003100020.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Cellulose 1,047 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2391-2407 application/pdf |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129577401188352 |