Nanostructured magnetic alginate composites for biomedical applications

Detalhes bibliográficos
Autor(a) principal: Bedê,Pedro Marins
Data de Publicação: 2017
Outros Autores: Silva,Marcelo Henrique Prado da, Figueiredo,André Ben-Hur da Silva, Finotelli,Priscilla Vanessa
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Polímeros (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000400267
Resumo: Abstract This is a study of the preparation and characterization of polymeric-magnetic nanoparticles. The nanoparticles used were magnetite (Fe3O4) and the chosen polymers were alginate and chitosan. Two types of samples were prepared: uncoated magnetic nanoparticles and magnetic nanoparticles encapsulated in polymeric matrix. The samples were analyzed by XRD, light scattering techniques, TEM, and magnetic SQUID. The XRD patterns identified magnetite (Fe3O4) as the only crystalline phase. TEM analyses showed particle sizes between 10 and 20nm for magnetite, and 15 and 30nm for the encapsulated magnetite. The values of magnetization ranged from 75 to 100emu/g for magnetite nanoparticles, and 8 to 12emu/g for coated with chitosan, at different temperatures of 20K and 300K. The saturation of both samples was in the range of 49 to 50KOe. Variations of results between the two kinds of samples were attributed to the encapsulation of magnetic nanoparticles by the polymers.
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spelling Nanostructured magnetic alginate composites for biomedical applicationsalginatechitosancompositenanoparticlesmagneticAbstract This is a study of the preparation and characterization of polymeric-magnetic nanoparticles. The nanoparticles used were magnetite (Fe3O4) and the chosen polymers were alginate and chitosan. Two types of samples were prepared: uncoated magnetic nanoparticles and magnetic nanoparticles encapsulated in polymeric matrix. The samples were analyzed by XRD, light scattering techniques, TEM, and magnetic SQUID. The XRD patterns identified magnetite (Fe3O4) as the only crystalline phase. TEM analyses showed particle sizes between 10 and 20nm for magnetite, and 15 and 30nm for the encapsulated magnetite. The values of magnetization ranged from 75 to 100emu/g for magnetite nanoparticles, and 8 to 12emu/g for coated with chitosan, at different temperatures of 20K and 300K. The saturation of both samples was in the range of 49 to 50KOe. Variations of results between the two kinds of samples were attributed to the encapsulation of magnetic nanoparticles by the polymers.Associação Brasileira de Polímeros2017-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000400267Polímeros v.27 n.4 2017reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/0104-1428.2267info:eu-repo/semantics/openAccessBedê,Pedro MarinsSilva,Marcelo Henrique Prado daFigueiredo,André Ben-Hur da SilvaFinotelli,Priscilla Vanessaeng2017-12-08T00:00:00Zoai:scielo:S0104-14282017000400267Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2017-12-08T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Nanostructured magnetic alginate composites for biomedical applications
title Nanostructured magnetic alginate composites for biomedical applications
spellingShingle Nanostructured magnetic alginate composites for biomedical applications
Bedê,Pedro Marins
alginate
chitosan
composite
nanoparticles
magnetic
title_short Nanostructured magnetic alginate composites for biomedical applications
title_full Nanostructured magnetic alginate composites for biomedical applications
title_fullStr Nanostructured magnetic alginate composites for biomedical applications
title_full_unstemmed Nanostructured magnetic alginate composites for biomedical applications
title_sort Nanostructured magnetic alginate composites for biomedical applications
author Bedê,Pedro Marins
author_facet Bedê,Pedro Marins
Silva,Marcelo Henrique Prado da
Figueiredo,André Ben-Hur da Silva
Finotelli,Priscilla Vanessa
author_role author
author2 Silva,Marcelo Henrique Prado da
Figueiredo,André Ben-Hur da Silva
Finotelli,Priscilla Vanessa
author2_role author
author
author
dc.contributor.author.fl_str_mv Bedê,Pedro Marins
Silva,Marcelo Henrique Prado da
Figueiredo,André Ben-Hur da Silva
Finotelli,Priscilla Vanessa
dc.subject.por.fl_str_mv alginate
chitosan
composite
nanoparticles
magnetic
topic alginate
chitosan
composite
nanoparticles
magnetic
description Abstract This is a study of the preparation and characterization of polymeric-magnetic nanoparticles. The nanoparticles used were magnetite (Fe3O4) and the chosen polymers were alginate and chitosan. Two types of samples were prepared: uncoated magnetic nanoparticles and magnetic nanoparticles encapsulated in polymeric matrix. The samples were analyzed by XRD, light scattering techniques, TEM, and magnetic SQUID. The XRD patterns identified magnetite (Fe3O4) as the only crystalline phase. TEM analyses showed particle sizes between 10 and 20nm for magnetite, and 15 and 30nm for the encapsulated magnetite. The values of magnetization ranged from 75 to 100emu/g for magnetite nanoparticles, and 8 to 12emu/g for coated with chitosan, at different temperatures of 20K and 300K. The saturation of both samples was in the range of 49 to 50KOe. Variations of results between the two kinds of samples were attributed to the encapsulation of magnetic nanoparticles by the polymers.
publishDate 2017
dc.date.none.fl_str_mv 2017-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000400267
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000400267
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-1428.2267
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Polímeros
publisher.none.fl_str_mv Associação Brasileira de Polímeros
dc.source.none.fl_str_mv Polímeros v.27 n.4 2017
reponame:Polímeros (São Carlos. Online)
instname:Associação Brasileira de Polímeros (ABPol)
instacron:ABPO
instname_str Associação Brasileira de Polímeros (ABPol)
instacron_str ABPO
institution ABPO
reponame_str Polímeros (São Carlos. Online)
collection Polímeros (São Carlos. Online)
repository.name.fl_str_mv Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)
repository.mail.fl_str_mv ||revista@abpol.org.br
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