Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modification
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.13/3309 |
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. |
id |
RCAP_a095cc3d4078e71ce6d106af35562cbf |
---|---|
oai_identifier_str |
oai:digituma.uma.pt:10400.13/3309 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
|
spelling |
Poly(glycidyl methacrylate)/bacterial cellulose nanocomposites: preparation, characterization and post-modificationBacterial cellulose nanocompositesPoly(glycidyl methacrylate)Post-modification.Faculdade de Ciências Exatas e da EngenhariaNanocomposites 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.ElsevierDigitUMaFaria, MarisaVilela, CarlaMohammadkazemi, FaranakSilvestre, Armando J.D.Freire, Carmen S. R.Cordeiro, Nereida2021-04-21T09:45:25Z20192019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.13/3309engFaria, M., Vilela, C., Mohammadkazemi, F., Silvestre, A. J., Freire, C. S., & Cordeiro, N. (2019). Poly (glycidyl methacrylate)/bacterial cellulose nanocomposites: Preparation, characterization and post-modification. International journal of biological macromolecules, 127, 618-627.10.1016/j.ijbiomac.2019.01.133info: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:RCAAP2023-06-04T03:30:39ZPortal AgregadorONG |
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 . Faculdade de Ciências Exatas e da Engenharia |
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.none.fl_str_mv |
DigitUMa |
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 . Faculdade de Ciências Exatas e da Engenharia |
topic |
Bacterial cellulose nanocomposites Poly(glycidyl methacrylate) Post-modification . Faculdade de Ciências Exatas e da Engenharia |
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 2019-01-01T00:00:00Z 2021-04-21T09:45:25Z |
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/10400.13/3309 |
url |
http://hdl.handle.net/10400.13/3309 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Faria, M., Vilela, C., Mohammadkazemi, F., Silvestre, A. J., Freire, C. S., & Cordeiro, N. (2019). Poly (glycidyl methacrylate)/bacterial cellulose nanocomposites: Preparation, characterization and post-modification. International journal of biological macromolecules, 127, 618-627. 10.1016/j.ijbiomac.2019.01.133 |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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 |
|
repository.mail.fl_str_mv |
|
_version_ |
1777301214557372416 |