Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC study

Detalhes bibliográficos
Autor(a) principal: Alonso, Emanuel
Data de Publicação: 2018
Outros Autores: Faria, Marisa, Ferreira, Artur, Cordeiro, Nereida
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.13/3313
Resumo: Inverse gas chromatography (IGC) is a technique for evaluating surface properties. The current work emphasizes the use of IGC to evaluate the surface physicochemical changes during different bacterial cellulose (BC) processing methods as well as upon polyaniline (PANi) incorporation. The processing methods (oven-drying, freeze-drying, and regeneration) caused changes in the BC surface group distribution, where upon freeze-drying and regeneration, a more acidic behavior is obtained, compared to oven-drying (Kb/Ka decreased up to 24%). Through freeze-drying, the structural pore preservation increases (54%) the BC porosity, whereas through regeneration, the porosity decreases (23%), compared to BC oven-drying. Regarding the nanocomposites, with PANi incorporation, the overall properties evaluated by IGC were significantly changed. The γtotals increases up to 150%, indicating a more reactive surface in the nanocomposites. Also, is observed a sevenfold increase in the Kb/Ka and a less porous surface (up to 85%). Hence, the current work highlights the use of IGC as a viable technique to evaluate the physicochemical changes upon different BC modifications.
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spelling Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC studyBacterial cellulosePolyanilineNanocompositesInverse gas chromatography.Faculdade de Ciências Exatas e da EngenhariaInverse gas chromatography (IGC) is a technique for evaluating surface properties. The current work emphasizes the use of IGC to evaluate the surface physicochemical changes during different bacterial cellulose (BC) processing methods as well as upon polyaniline (PANi) incorporation. The processing methods (oven-drying, freeze-drying, and regeneration) caused changes in the BC surface group distribution, where upon freeze-drying and regeneration, a more acidic behavior is obtained, compared to oven-drying (Kb/Ka decreased up to 24%). Through freeze-drying, the structural pore preservation increases (54%) the BC porosity, whereas through regeneration, the porosity decreases (23%), compared to BC oven-drying. Regarding the nanocomposites, with PANi incorporation, the overall properties evaluated by IGC were significantly changed. The γtotals increases up to 150%, indicating a more reactive surface in the nanocomposites. Also, is observed a sevenfold increase in the Kb/Ka and a less porous surface (up to 85%). Hence, the current work highlights the use of IGC as a viable technique to evaluate the physicochemical changes upon different BC modifications.SpringerDigitUMaAlonso, EmanuelFaria, MarisaFerreira, ArturCordeiro, Nereida2021-04-22T13:52:37Z20182018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.13/3313engAlonso, E., Faria, M., Ferreira, A., & Cordeiro, N. (2018). Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC study. Cellulose, 25(4), 2343-2354.10.1007/s10570-018-1736-0info: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:RCAAP2023-03-19T05:34:30Zoai:digituma.uma.pt:10400.13/3313Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:06:21.520589Repositório 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 Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC study
title Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC study
spellingShingle Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC study
Alonso, Emanuel
Bacterial cellulose
Polyaniline
Nanocomposites
Inverse gas chromatography
.
Faculdade de Ciências Exatas e da Engenharia
title_short Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC study
title_full Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC study
title_fullStr Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC study
title_full_unstemmed Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC study
title_sort Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC study
author Alonso, Emanuel
author_facet Alonso, Emanuel
Faria, Marisa
Ferreira, Artur
Cordeiro, Nereida
author_role author
author2 Faria, Marisa
Ferreira, Artur
Cordeiro, Nereida
author2_role author
author
author
dc.contributor.none.fl_str_mv DigitUMa
dc.contributor.author.fl_str_mv Alonso, Emanuel
Faria, Marisa
Ferreira, Artur
Cordeiro, Nereida
dc.subject.por.fl_str_mv Bacterial cellulose
Polyaniline
Nanocomposites
Inverse gas chromatography
.
Faculdade de Ciências Exatas e da Engenharia
topic Bacterial cellulose
Polyaniline
Nanocomposites
Inverse gas chromatography
.
Faculdade de Ciências Exatas e da Engenharia
description Inverse gas chromatography (IGC) is a technique for evaluating surface properties. The current work emphasizes the use of IGC to evaluate the surface physicochemical changes during different bacterial cellulose (BC) processing methods as well as upon polyaniline (PANi) incorporation. The processing methods (oven-drying, freeze-drying, and regeneration) caused changes in the BC surface group distribution, where upon freeze-drying and regeneration, a more acidic behavior is obtained, compared to oven-drying (Kb/Ka decreased up to 24%). Through freeze-drying, the structural pore preservation increases (54%) the BC porosity, whereas through regeneration, the porosity decreases (23%), compared to BC oven-drying. Regarding the nanocomposites, with PANi incorporation, the overall properties evaluated by IGC were significantly changed. The γtotals increases up to 150%, indicating a more reactive surface in the nanocomposites. Also, is observed a sevenfold increase in the Kb/Ka and a less porous surface (up to 85%). Hence, the current work highlights the use of IGC as a viable technique to evaluate the physicochemical changes upon different BC modifications.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018-01-01T00:00:00Z
2021-04-22T13:52:37Z
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/10400.13/3313
url http://hdl.handle.net/10400.13/3313
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Alonso, E., Faria, M., Ferreira, A., & Cordeiro, N. (2018). Influence of the matrix and polymerization methods on the synthesis of BC/PANi nanocomposites: an IGC study. Cellulose, 25(4), 2343-2354.
10.1007/s10570-018-1736-0
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 Springer
publisher.none.fl_str_mv Springer
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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