Cyclodextrin-grafted cellulose: physico-chemical characterization
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/80893 https://doi.org/10.1016/j.carbpol.2012.08.109 |
Resumo: | Cyclodextrins (CDs) can form inclusion complexes with a wide variety of molecules making them very attractive in different areas, such as pharmaceutics, biochemistry, food chemistry and textile. In this communication we will report on the physico-chemical characterization of cellulose modified with CDs by means of infra-red spectroscopy (FTIR), cross polarization magic angle spinning solid state nuclear magnetic resonance (CP-MAS NMR), polarized optical microscopy (POM) and thermal gravimetric analysis (TGA). Both CP-MAS NMR and FTIR indicate that CDs are chemically attached to cellulose backbone through the formation of ester bonds. Furthermore, the CD-grafted cellulose was dissolved in a "superphosphoric" acid solution but, despite the increase of hydrophilicity due to the modification, POM revealed that grafted cellulose was less soluble when compared to the unmodified polymer. The formation of a complex CD-cellulose network is suggested. |
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Cyclodextrin-grafted cellulose: physico-chemical characterizationCyclodextrins (CDs) can form inclusion complexes with a wide variety of molecules making them very attractive in different areas, such as pharmaceutics, biochemistry, food chemistry and textile. In this communication we will report on the physico-chemical characterization of cellulose modified with CDs by means of infra-red spectroscopy (FTIR), cross polarization magic angle spinning solid state nuclear magnetic resonance (CP-MAS NMR), polarized optical microscopy (POM) and thermal gravimetric analysis (TGA). Both CP-MAS NMR and FTIR indicate that CDs are chemically attached to cellulose backbone through the formation of ester bonds. Furthermore, the CD-grafted cellulose was dissolved in a "superphosphoric" acid solution but, despite the increase of hydrophilicity due to the modification, POM revealed that grafted cellulose was less soluble when compared to the unmodified polymer. The formation of a complex CD-cellulose network is suggested.2013-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/80893http://hdl.handle.net/10316/80893https://doi.org/10.1016/j.carbpol.2012.08.109por1879-134423465937Medronho, B.Andrade, R.Vivod, V.Ostlund, A.Miguel, M. G.Lindman, B.Voncina, B.Valente, A. J. M.info: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:RCAAP2021-09-29T08:12:43Zoai:estudogeral.uc.pt:10316/80893Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:03:08.958072Repositório 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 |
Cyclodextrin-grafted cellulose: physico-chemical characterization |
title |
Cyclodextrin-grafted cellulose: physico-chemical characterization |
spellingShingle |
Cyclodextrin-grafted cellulose: physico-chemical characterization Medronho, B. |
title_short |
Cyclodextrin-grafted cellulose: physico-chemical characterization |
title_full |
Cyclodextrin-grafted cellulose: physico-chemical characterization |
title_fullStr |
Cyclodextrin-grafted cellulose: physico-chemical characterization |
title_full_unstemmed |
Cyclodextrin-grafted cellulose: physico-chemical characterization |
title_sort |
Cyclodextrin-grafted cellulose: physico-chemical characterization |
author |
Medronho, B. |
author_facet |
Medronho, B. Andrade, R. Vivod, V. Ostlund, A. Miguel, M. G. Lindman, B. Voncina, B. Valente, A. J. M. |
author_role |
author |
author2 |
Andrade, R. Vivod, V. Ostlund, A. Miguel, M. G. Lindman, B. Voncina, B. Valente, A. J. M. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Medronho, B. Andrade, R. Vivod, V. Ostlund, A. Miguel, M. G. Lindman, B. Voncina, B. Valente, A. J. M. |
description |
Cyclodextrins (CDs) can form inclusion complexes with a wide variety of molecules making them very attractive in different areas, such as pharmaceutics, biochemistry, food chemistry and textile. In this communication we will report on the physico-chemical characterization of cellulose modified with CDs by means of infra-red spectroscopy (FTIR), cross polarization magic angle spinning solid state nuclear magnetic resonance (CP-MAS NMR), polarized optical microscopy (POM) and thermal gravimetric analysis (TGA). Both CP-MAS NMR and FTIR indicate that CDs are chemically attached to cellulose backbone through the formation of ester bonds. Furthermore, the CD-grafted cellulose was dissolved in a "superphosphoric" acid solution but, despite the increase of hydrophilicity due to the modification, POM revealed that grafted cellulose was less soluble when compared to the unmodified polymer. The formation of a complex CD-cellulose network is suggested. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-03-01 |
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/10316/80893 http://hdl.handle.net/10316/80893 https://doi.org/10.1016/j.carbpol.2012.08.109 |
url |
http://hdl.handle.net/10316/80893 https://doi.org/10.1016/j.carbpol.2012.08.109 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
1879-1344 23465937 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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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