Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modification

Detalhes bibliográficos
Autor(a) principal: Faria, Marisa
Data de Publicação: 2019
Outros Autores: Vilela, Carla, Mohammadkazemi, Faranak, Silvestre, Armando J. D., Freire, Carmen S. R., 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/10773/36844
Resumo: Nanocomposites composed of poly(glycidyl methacrylate) (PGMA) and bacterial cellulose (BC) were prepared by the in-situ free radical polymerization of glycidyl methacrylate (GMA) inside the BC network. The resulting nanocomposites were characterized in terms of structure, morphology, water-uptake capacity, thermal stability and viscoelastic properties. The three-dimensional structure of BC endowed the nanocomposites with good thermal stability (up to 270 °C) and viscoelastic properties (minimum storage modulus = 80 MPa at 200 °C). In addition, the water-uptake and crystallinity decreased with the increasing content of the hydrophobic and amorphous PGMA matrix. These nanocomposites were then submitted to post-modification via acid-catalysed hydrolysis to convert the hydrophobic PGMA into the hydrophilic poly(glyceryl methacrylate) (PGOHMA) counterpart, which increased the hydrophilicity of the nanocomposites and consequently improved their water-uptake capacity. Besides, the post-modified nanocomposites maintained a good thermal stability (up to 250 °C), viscoelastic properties (minimum storage modulus = 171 MPa at 200 °C) and porous structure. In view of these results, the PGMA/BC nanocomposites can be used as functional hydrophobic nanocomposites for post-modification reactions, whereas the PGOHMA/BC nanocomposites might have potential for biomedical applications requiring hydrophilic, swellable and biocompatible materials.
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spelling Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modificationBacterial cellulose nanocompositesPoly(glycidyl methacrylate)Post-modificationNanocomposites composed of poly(glycidyl methacrylate) (PGMA) and bacterial cellulose (BC) were prepared by the in-situ free radical polymerization of glycidyl methacrylate (GMA) inside the BC network. The resulting nanocomposites were characterized in terms of structure, morphology, water-uptake capacity, thermal stability and viscoelastic properties. The three-dimensional structure of BC endowed the nanocomposites with good thermal stability (up to 270 °C) and viscoelastic properties (minimum storage modulus = 80 MPa at 200 °C). In addition, the water-uptake and crystallinity decreased with the increasing content of the hydrophobic and amorphous PGMA matrix. These nanocomposites were then submitted to post-modification via acid-catalysed hydrolysis to convert the hydrophobic PGMA into the hydrophilic poly(glyceryl methacrylate) (PGOHMA) counterpart, which increased the hydrophilicity of the nanocomposites and consequently improved their water-uptake capacity. Besides, the post-modified nanocomposites maintained a good thermal stability (up to 250 °C), viscoelastic properties (minimum storage modulus = 171 MPa at 200 °C) and porous structure. In view of these results, the PGMA/BC nanocomposites can be used as functional hydrophobic nanocomposites for post-modification reactions, whereas the PGOHMA/BC nanocomposites might have potential for biomedical applications requiring hydrophilic, swellable and biocompatible materials.Elsevier2023-04-03T13:41:25Z2019-04-15T00:00:00Z2019-04-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/36844eng0141-813010.1016/j.ijbiomac.2019.01.133Faria, MarisaVilela, CarlaMohammadkazemi, FaranakSilvestre, Armando J. D.Freire, Carmen S. R.Cordeiro, Nereidainfo: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:RCAAP2024-02-22T12:10:57Zoai:ria.ua.pt:10773/36844Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:07:30.356972Repositório 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 Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modification
title Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modification
spellingShingle Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modification
Faria, Marisa
Bacterial cellulose nanocomposites
Poly(glycidyl methacrylate)
Post-modification
title_short Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modification
title_full Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modification
title_fullStr Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modification
title_full_unstemmed Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modification
title_sort Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modification
author Faria, Marisa
author_facet Faria, Marisa
Vilela, Carla
Mohammadkazemi, Faranak
Silvestre, Armando J. D.
Freire, Carmen S. R.
Cordeiro, Nereida
author_role author
author2 Vilela, Carla
Mohammadkazemi, Faranak
Silvestre, Armando J. D.
Freire, Carmen S. R.
Cordeiro, Nereida
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Faria, Marisa
Vilela, Carla
Mohammadkazemi, Faranak
Silvestre, Armando J. D.
Freire, Carmen S. R.
Cordeiro, Nereida
dc.subject.por.fl_str_mv Bacterial cellulose nanocomposites
Poly(glycidyl methacrylate)
Post-modification
topic Bacterial cellulose nanocomposites
Poly(glycidyl methacrylate)
Post-modification
description Nanocomposites composed of poly(glycidyl methacrylate) (PGMA) and bacterial cellulose (BC) were prepared by the in-situ free radical polymerization of glycidyl methacrylate (GMA) inside the BC network. The resulting nanocomposites were characterized in terms of structure, morphology, water-uptake capacity, thermal stability and viscoelastic properties. The three-dimensional structure of BC endowed the nanocomposites with good thermal stability (up to 270 °C) and viscoelastic properties (minimum storage modulus = 80 MPa at 200 °C). In addition, the water-uptake and crystallinity decreased with the increasing content of the hydrophobic and amorphous PGMA matrix. These nanocomposites were then submitted to post-modification via acid-catalysed hydrolysis to convert the hydrophobic PGMA into the hydrophilic poly(glyceryl methacrylate) (PGOHMA) counterpart, which increased the hydrophilicity of the nanocomposites and consequently improved their water-uptake capacity. Besides, the post-modified nanocomposites maintained a good thermal stability (up to 250 °C), viscoelastic properties (minimum storage modulus = 171 MPa at 200 °C) and porous structure. In view of these results, the PGMA/BC nanocomposites can be used as functional hydrophobic nanocomposites for post-modification reactions, whereas the PGOHMA/BC nanocomposites might have potential for biomedical applications requiring hydrophilic, swellable and biocompatible materials.
publishDate 2019
dc.date.none.fl_str_mv 2019-04-15T00:00:00Z
2019-04-15
2023-04-03T13:41:25Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/36844
url http://hdl.handle.net/10773/36844
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0141-8130
10.1016/j.ijbiomac.2019.01.133
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dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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