Nanocomposite Films Based on Flaxseed Gum and Cellulose Nanocrystals
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000600232 |
Resumo: | Flaxseed gum (FG)-based films were developed with the addition of glycerol as a plasticizer and glutaraldehyde as a crosslinking agent. HCl was added to improve crosslinking and decrease the hydrophilicity of the matrix. Different cellulose nanocrystal (CN) amounts were used as reinforcements in the optimum FG formulation. The crosslinking process at pH 3.5 led to a lower solubility of FG in water (from 100% to 53%) and an increase in thermal stability (from 160 ºC to 209 ºC). FTIR analysis confirmed a reduction in the -OH band due to crosslinking between the hydroxyl groups of FG. A diffuse diffraction pattern was observed for all FG films. The addition of 4% w/w of CN contributed to reduction of water solubility (from 53% to 20.8%) and absorption (from 21.9% to 6.8%). Finally, an improvement was observed in the tensile mechanical properties in the nanocomposites, showing satisfactory results for the proposed formulations, mainly with 8% w/w of CN added to the matrix. Overall, this study demonstrated that FG/CN nanocomposites are promising materials to be use as a sustainable biopolymer for application as bioplastics. |
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Materials research (São Carlos. Online) |
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Nanocomposite Films Based on Flaxseed Gum and Cellulose NanocrystalsFlaxseed gumcellulose nanocrystalscrosslinkingnanocompositebiopolymerFlaxseed gum (FG)-based films were developed with the addition of glycerol as a plasticizer and glutaraldehyde as a crosslinking agent. HCl was added to improve crosslinking and decrease the hydrophilicity of the matrix. Different cellulose nanocrystal (CN) amounts were used as reinforcements in the optimum FG formulation. The crosslinking process at pH 3.5 led to a lower solubility of FG in water (from 100% to 53%) and an increase in thermal stability (from 160 ºC to 209 ºC). FTIR analysis confirmed a reduction in the -OH band due to crosslinking between the hydroxyl groups of FG. A diffuse diffraction pattern was observed for all FG films. The addition of 4% w/w of CN contributed to reduction of water solubility (from 53% to 20.8%) and absorption (from 21.9% to 6.8%). Finally, an improvement was observed in the tensile mechanical properties in the nanocomposites, showing satisfactory results for the proposed formulations, mainly with 8% w/w of CN added to the matrix. Overall, this study demonstrated that FG/CN nanocomposites are promising materials to be use as a sustainable biopolymer for application as bioplastics.ABM, ABC, ABPol2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000600232Materials Research v.21 n.6 2018reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2018-0134info:eu-repo/semantics/openAccessPrado,Natália SoaresSilva,Ingrid Souza Vieira daSilva,Thiago Alves LopesOliveira,Welles Júnior deMotta,Leila Aparecida de CastroPasquini,DanielOtaguro,Harumieng2018-10-19T00:00:00Zoai:scielo:S1516-14392018000600232Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2018-10-19T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Nanocomposite Films Based on Flaxseed Gum and Cellulose Nanocrystals |
title |
Nanocomposite Films Based on Flaxseed Gum and Cellulose Nanocrystals |
spellingShingle |
Nanocomposite Films Based on Flaxseed Gum and Cellulose Nanocrystals Prado,Natália Soares Flaxseed gum cellulose nanocrystals crosslinking nanocomposite biopolymer |
title_short |
Nanocomposite Films Based on Flaxseed Gum and Cellulose Nanocrystals |
title_full |
Nanocomposite Films Based on Flaxseed Gum and Cellulose Nanocrystals |
title_fullStr |
Nanocomposite Films Based on Flaxseed Gum and Cellulose Nanocrystals |
title_full_unstemmed |
Nanocomposite Films Based on Flaxseed Gum and Cellulose Nanocrystals |
title_sort |
Nanocomposite Films Based on Flaxseed Gum and Cellulose Nanocrystals |
author |
Prado,Natália Soares |
author_facet |
Prado,Natália Soares Silva,Ingrid Souza Vieira da Silva,Thiago Alves Lopes Oliveira,Welles Júnior de Motta,Leila Aparecida de Castro Pasquini,Daniel Otaguro,Harumi |
author_role |
author |
author2 |
Silva,Ingrid Souza Vieira da Silva,Thiago Alves Lopes Oliveira,Welles Júnior de Motta,Leila Aparecida de Castro Pasquini,Daniel Otaguro,Harumi |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Prado,Natália Soares Silva,Ingrid Souza Vieira da Silva,Thiago Alves Lopes Oliveira,Welles Júnior de Motta,Leila Aparecida de Castro Pasquini,Daniel Otaguro,Harumi |
dc.subject.por.fl_str_mv |
Flaxseed gum cellulose nanocrystals crosslinking nanocomposite biopolymer |
topic |
Flaxseed gum cellulose nanocrystals crosslinking nanocomposite biopolymer |
description |
Flaxseed gum (FG)-based films were developed with the addition of glycerol as a plasticizer and glutaraldehyde as a crosslinking agent. HCl was added to improve crosslinking and decrease the hydrophilicity of the matrix. Different cellulose nanocrystal (CN) amounts were used as reinforcements in the optimum FG formulation. The crosslinking process at pH 3.5 led to a lower solubility of FG in water (from 100% to 53%) and an increase in thermal stability (from 160 ºC to 209 ºC). FTIR analysis confirmed a reduction in the -OH band due to crosslinking between the hydroxyl groups of FG. A diffuse diffraction pattern was observed for all FG films. The addition of 4% w/w of CN contributed to reduction of water solubility (from 53% to 20.8%) and absorption (from 21.9% to 6.8%). Finally, an improvement was observed in the tensile mechanical properties in the nanocomposites, showing satisfactory results for the proposed formulations, mainly with 8% w/w of CN added to the matrix. Overall, this study demonstrated that FG/CN nanocomposites are promising materials to be use as a sustainable biopolymer for application as bioplastics. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 |
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=S1516-14392018000600232 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000600232 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1980-5373-mr-2018-0134 |
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 |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.21 n.6 2018 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212673276346368 |