Synthesis of thermoplastic starch-bacterial cellulose nanocomposites via in situ fermentation
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000900009 |
Resumo: | In this paper, a nanocomposite based on thermoplastic starch (TPS) reinforced with bacterial cellulose (BC) nanoribbons was synthesized by in situ fermentation and chemical crosslinking. BC nanoribbons were produced by a Colombian native strain of Gluconacetobacter medellinensis; the nanocomposite was plasticized with glycerol and crosslinked with citric acid. The reinforcement percentage in the nanocomposites remained constant throughout the fermentation time because of the TPS absorption capability of the BC network. Nanocomposites produced after fermentation for seven days were characterized using thermogravimetric analysis (TGA); Fourier transformed infrared spectroscopy with attenuated total reflectance (FTIR-ATR), mechanical testing and scanning electron microscopy (SEM). The new TPS/BC nanocomposites exhibit strong interfacial adhesion, improved thermal behavior, water stability and enhanced mechanical properties. These findings support the applications of starch in the packaging industry. |
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Journal of the Brazilian Chemical Society (Online) |
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Synthesis of thermoplastic starch-bacterial cellulose nanocomposites via in situ fermentationnanocompositethermoplastic starchbacterial cellulosein situ fermentationchemical crosslinkingIn this paper, a nanocomposite based on thermoplastic starch (TPS) reinforced with bacterial cellulose (BC) nanoribbons was synthesized by in situ fermentation and chemical crosslinking. BC nanoribbons were produced by a Colombian native strain of Gluconacetobacter medellinensis; the nanocomposite was plasticized with glycerol and crosslinked with citric acid. The reinforcement percentage in the nanocomposites remained constant throughout the fermentation time because of the TPS absorption capability of the BC network. Nanocomposites produced after fermentation for seven days were characterized using thermogravimetric analysis (TGA); Fourier transformed infrared spectroscopy with attenuated total reflectance (FTIR-ATR), mechanical testing and scanning electron microscopy (SEM). The new TPS/BC nanocomposites exhibit strong interfacial adhesion, improved thermal behavior, water stability and enhanced mechanical properties. These findings support the applications of starch in the packaging industry.Sociedade Brasileira de Química2014-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000900009Journal of the Brazilian Chemical Society v.25 n.9 2014reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20140146info:eu-repo/semantics/openAccessOsorio,Marlon A.Restrepo,DavidVelásquez-Cock,Jorge A.Zuluaga,Robin O.Montoya,UrsulaRojas,OrlandoGañán,Piedad F.Marin,DianaCastro,Cristina I.eng2014-09-30T00:00:00Zoai:scielo:S0103-50532014000900009Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2014-09-30T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Synthesis of thermoplastic starch-bacterial cellulose nanocomposites via in situ fermentation |
title |
Synthesis of thermoplastic starch-bacterial cellulose nanocomposites via in situ fermentation |
spellingShingle |
Synthesis of thermoplastic starch-bacterial cellulose nanocomposites via in situ fermentation Osorio,Marlon A. nanocomposite thermoplastic starch bacterial cellulose in situ fermentation chemical crosslinking |
title_short |
Synthesis of thermoplastic starch-bacterial cellulose nanocomposites via in situ fermentation |
title_full |
Synthesis of thermoplastic starch-bacterial cellulose nanocomposites via in situ fermentation |
title_fullStr |
Synthesis of thermoplastic starch-bacterial cellulose nanocomposites via in situ fermentation |
title_full_unstemmed |
Synthesis of thermoplastic starch-bacterial cellulose nanocomposites via in situ fermentation |
title_sort |
Synthesis of thermoplastic starch-bacterial cellulose nanocomposites via in situ fermentation |
author |
Osorio,Marlon A. |
author_facet |
Osorio,Marlon A. Restrepo,David Velásquez-Cock,Jorge A. Zuluaga,Robin O. Montoya,Ursula Rojas,Orlando Gañán,Piedad F. Marin,Diana Castro,Cristina I. |
author_role |
author |
author2 |
Restrepo,David Velásquez-Cock,Jorge A. Zuluaga,Robin O. Montoya,Ursula Rojas,Orlando Gañán,Piedad F. Marin,Diana Castro,Cristina I. |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Osorio,Marlon A. Restrepo,David Velásquez-Cock,Jorge A. Zuluaga,Robin O. Montoya,Ursula Rojas,Orlando Gañán,Piedad F. Marin,Diana Castro,Cristina I. |
dc.subject.por.fl_str_mv |
nanocomposite thermoplastic starch bacterial cellulose in situ fermentation chemical crosslinking |
topic |
nanocomposite thermoplastic starch bacterial cellulose in situ fermentation chemical crosslinking |
description |
In this paper, a nanocomposite based on thermoplastic starch (TPS) reinforced with bacterial cellulose (BC) nanoribbons was synthesized by in situ fermentation and chemical crosslinking. BC nanoribbons were produced by a Colombian native strain of Gluconacetobacter medellinensis; the nanocomposite was plasticized with glycerol and crosslinked with citric acid. The reinforcement percentage in the nanocomposites remained constant throughout the fermentation time because of the TPS absorption capability of the BC network. Nanocomposites produced after fermentation for seven days were characterized using thermogravimetric analysis (TGA); Fourier transformed infrared spectroscopy with attenuated total reflectance (FTIR-ATR), mechanical testing and scanning electron microscopy (SEM). The new TPS/BC nanocomposites exhibit strong interfacial adhesion, improved thermal behavior, water stability and enhanced mechanical properties. These findings support the applications of starch in the packaging industry. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-09-01 |
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=S0103-50532014000900009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000900009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5935/0103-5053.20140146 |
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 |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.25 n.9 2014 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318176216809472 |