Antibacterial Activity of Nanocomposites of Copper and Cellulose
Autor(a) principal: | |
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Data de Publicação: | 2013 |
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/10773/19921 |
Resumo: | The design of cheap and safe antibacterial materials for widespread use has been a challenge in materials science. The use of copper nanostructures combined with abundant biopolymers such as cellulose offers a potential approach to achieve such materials though this has been less investigated as compared to other composites. Here, nanocomposites comprising copper nanofillers in cellulose matrices have been prepared by in situ and ex situ methods. Two cellulose matrices (vegetable and bacterial) were investigated together with morphological distinct copper particulates (nanoparticles and nanowires). A study on the antibacterial activity of these nanocomposites was carried out for Staphylococcus aureus and Klebsiella pneumoniae, as pathogen microorganisms. The results showed that the chemical nature and morphology of the nanofillers have great effect on the antibacterial activity, with an increase in the antibacterial activity with increasing copper content in the composites. The cellulosic matrices also show an effect on the antibacterial efficiency of the nanocomposites, with vegetal cellulose fibers acting as the most effective substrate. Regarding the results obtained, we anticipate the development of new approaches to prepare cellulose/copper based nanocomposites thereby producing a wide range of interesting antibacterial materials with potential use in diverse applications such as packaging or paper coatings. |
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Antibacterial Activity of Nanocomposites of Copper and CelluloseSILVER NANOPARTICLESESCHERICHIA-COLIANTIMICROBIAL ACTIVITYCYTOTOXICITYGENOTOXICITYCHITOSANSIZEThe design of cheap and safe antibacterial materials for widespread use has been a challenge in materials science. The use of copper nanostructures combined with abundant biopolymers such as cellulose offers a potential approach to achieve such materials though this has been less investigated as compared to other composites. Here, nanocomposites comprising copper nanofillers in cellulose matrices have been prepared by in situ and ex situ methods. Two cellulose matrices (vegetable and bacterial) were investigated together with morphological distinct copper particulates (nanoparticles and nanowires). A study on the antibacterial activity of these nanocomposites was carried out for Staphylococcus aureus and Klebsiella pneumoniae, as pathogen microorganisms. The results showed that the chemical nature and morphology of the nanofillers have great effect on the antibacterial activity, with an increase in the antibacterial activity with increasing copper content in the composites. The cellulosic matrices also show an effect on the antibacterial efficiency of the nanocomposites, with vegetal cellulose fibers acting as the most effective substrate. Regarding the results obtained, we anticipate the development of new approaches to prepare cellulose/copper based nanocomposites thereby producing a wide range of interesting antibacterial materials with potential use in diverse applications such as packaging or paper coatings.HINDAWI PUBLISHING CORPORATION2017-12-07T19:29:25Z2013-01-01T00:00:00Z2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/19921eng2314-613310.1155/2013/280512Pinto, Ricardo J. B.Daina, SaraSadocco, PatriziaNeto, Carlos PascoalTrindade, Titoinfo: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:RCAAP2024-05-06T04:07:35Zoai:ria.ua.pt:10773/19921Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-06T04:07:35Repositório 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 |
Antibacterial Activity of Nanocomposites of Copper and Cellulose |
title |
Antibacterial Activity of Nanocomposites of Copper and Cellulose |
spellingShingle |
Antibacterial Activity of Nanocomposites of Copper and Cellulose Pinto, Ricardo J. B. SILVER NANOPARTICLES ESCHERICHIA-COLI ANTIMICROBIAL ACTIVITY CYTOTOXICITY GENOTOXICITY CHITOSAN SIZE |
title_short |
Antibacterial Activity of Nanocomposites of Copper and Cellulose |
title_full |
Antibacterial Activity of Nanocomposites of Copper and Cellulose |
title_fullStr |
Antibacterial Activity of Nanocomposites of Copper and Cellulose |
title_full_unstemmed |
Antibacterial Activity of Nanocomposites of Copper and Cellulose |
title_sort |
Antibacterial Activity of Nanocomposites of Copper and Cellulose |
author |
Pinto, Ricardo J. B. |
author_facet |
Pinto, Ricardo J. B. Daina, Sara Sadocco, Patrizia Neto, Carlos Pascoal Trindade, Tito |
author_role |
author |
author2 |
Daina, Sara Sadocco, Patrizia Neto, Carlos Pascoal Trindade, Tito |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Pinto, Ricardo J. B. Daina, Sara Sadocco, Patrizia Neto, Carlos Pascoal Trindade, Tito |
dc.subject.por.fl_str_mv |
SILVER NANOPARTICLES ESCHERICHIA-COLI ANTIMICROBIAL ACTIVITY CYTOTOXICITY GENOTOXICITY CHITOSAN SIZE |
topic |
SILVER NANOPARTICLES ESCHERICHIA-COLI ANTIMICROBIAL ACTIVITY CYTOTOXICITY GENOTOXICITY CHITOSAN SIZE |
description |
The design of cheap and safe antibacterial materials for widespread use has been a challenge in materials science. The use of copper nanostructures combined with abundant biopolymers such as cellulose offers a potential approach to achieve such materials though this has been less investigated as compared to other composites. Here, nanocomposites comprising copper nanofillers in cellulose matrices have been prepared by in situ and ex situ methods. Two cellulose matrices (vegetable and bacterial) were investigated together with morphological distinct copper particulates (nanoparticles and nanowires). A study on the antibacterial activity of these nanocomposites was carried out for Staphylococcus aureus and Klebsiella pneumoniae, as pathogen microorganisms. The results showed that the chemical nature and morphology of the nanofillers have great effect on the antibacterial activity, with an increase in the antibacterial activity with increasing copper content in the composites. The cellulosic matrices also show an effect on the antibacterial efficiency of the nanocomposites, with vegetal cellulose fibers acting as the most effective substrate. Regarding the results obtained, we anticipate the development of new approaches to prepare cellulose/copper based nanocomposites thereby producing a wide range of interesting antibacterial materials with potential use in diverse applications such as packaging or paper coatings. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-01T00:00:00Z 2013 2017-12-07T19:29:25Z |
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/10773/19921 |
url |
http://hdl.handle.net/10773/19921 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2314-6133 10.1155/2013/280512 |
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 |
HINDAWI PUBLISHING CORPORATION |
publisher.none.fl_str_mv |
HINDAWI PUBLISHING CORPORATION |
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 |
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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 |
repository.mail.fl_str_mv |
mluisa.alvim@gmail.com |
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1817543627209965568 |