Effect of low concentrations of SiO2 nanoparticles on the physical and chemical properties of sodium alginate-based films
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório do Instituto de Tecnologia de Alimentos |
Texto Completo: | http://repositorio.ital.sp.gov.br/jspui/handle/123456789/289 |
Resumo: | This work investigated the effect of adding low concentrations of nano-SiO2 (0.5, 1.0 and 1.5%) in the properties of films based on sodium alginate, to identify lower thresholds in the proportion of the reinforcing agent. It was found that, even in the smallest proportion, thermal stability of the nanocomposites improved significantly (with degradation onset increased by almost 15% compared with the control film). The surface morphology showed pronounced roughness at nano-SiO2 concentrations greater than 1.0%, indicating agglomeration of part of the nanomaterial. Mechanical properties were reduced for the samples with concentrations equal to 1.0 and 1.5%, however, without significant differences between them. Conversely, water vapor and light barrier properties have not undergone significant changes in any formulation. Therefore, the use of 0.5% nano-SiO2 in alginate films would be an easy and economically interesting way to improve thermal stability, without significantly reducing mechanical properties of the pure material. |
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Effect of low concentrations of SiO2 nanoparticles on the physical and chemical properties of sodium alginate-based filmsBio-based filmNanocompositeThis work investigated the effect of adding low concentrations of nano-SiO2 (0.5, 1.0 and 1.5%) in the properties of films based on sodium alginate, to identify lower thresholds in the proportion of the reinforcing agent. It was found that, even in the smallest proportion, thermal stability of the nanocomposites improved significantly (with degradation onset increased by almost 15% compared with the control film). The surface morphology showed pronounced roughness at nano-SiO2 concentrations greater than 1.0%, indicating agglomeration of part of the nanomaterial. Mechanical properties were reduced for the samples with concentrations equal to 1.0 and 1.5%, however, without significant differences between them. Conversely, water vapor and light barrier properties have not undergone significant changes in any formulation. Therefore, the use of 0.5% nano-SiO2 in alginate films would be an easy and economically interesting way to improve thermal stability, without significantly reducing mechanical properties of the pure material.CNPq/ CAPESElsevier Ltd.Marangoni Júnior, Luís; et. al.2022-05-10T19:02:51Z2022-05-10T19:02:51Z2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfCarbohydrate Polymers v. 269, 118286-118292, 2021. DOI:10.1016/j.carbpol.2021.118286http://repositorio.ital.sp.gov.br/jspui/handle/123456789/289reponame:Repositório do Instituto de Tecnologia de Alimentosinstname:Instituto de Tecnologia de Alimentos (ITAL)instacron:ITALenginfo:eu-repo/semantics/openAccess2022-05-20T16:14:24Zoai:http://repositorio.ital.sp.gov.br:123456789/289Repositório InstitucionalPUBhttp://repositorio.ital.sp.gov.br/oai/requestbjftsec@ital.sp.gov.br || bjftsec@ital.sp.gov.bropendoar:2022-05-20T16:14:24Repositório do Instituto de Tecnologia de Alimentos - Instituto de Tecnologia de Alimentos (ITAL)false |
dc.title.none.fl_str_mv |
Effect of low concentrations of SiO2 nanoparticles on the physical and chemical properties of sodium alginate-based films |
title |
Effect of low concentrations of SiO2 nanoparticles on the physical and chemical properties of sodium alginate-based films |
spellingShingle |
Effect of low concentrations of SiO2 nanoparticles on the physical and chemical properties of sodium alginate-based films Marangoni Júnior, Luís; et. al. Bio-based film Nanocomposite |
title_short |
Effect of low concentrations of SiO2 nanoparticles on the physical and chemical properties of sodium alginate-based films |
title_full |
Effect of low concentrations of SiO2 nanoparticles on the physical and chemical properties of sodium alginate-based films |
title_fullStr |
Effect of low concentrations of SiO2 nanoparticles on the physical and chemical properties of sodium alginate-based films |
title_full_unstemmed |
Effect of low concentrations of SiO2 nanoparticles on the physical and chemical properties of sodium alginate-based films |
title_sort |
Effect of low concentrations of SiO2 nanoparticles on the physical and chemical properties of sodium alginate-based films |
author |
Marangoni Júnior, Luís; et. al. |
author_facet |
Marangoni Júnior, Luís; et. al. |
author_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Marangoni Júnior, Luís; et. al. |
dc.subject.none.fl_str_mv |
|
dc.subject.por.fl_str_mv |
Bio-based film Nanocomposite |
topic |
Bio-based film Nanocomposite |
description |
This work investigated the effect of adding low concentrations of nano-SiO2 (0.5, 1.0 and 1.5%) in the properties of films based on sodium alginate, to identify lower thresholds in the proportion of the reinforcing agent. It was found that, even in the smallest proportion, thermal stability of the nanocomposites improved significantly (with degradation onset increased by almost 15% compared with the control film). The surface morphology showed pronounced roughness at nano-SiO2 concentrations greater than 1.0%, indicating agglomeration of part of the nanomaterial. Mechanical properties were reduced for the samples with concentrations equal to 1.0 and 1.5%, however, without significant differences between them. Conversely, water vapor and light barrier properties have not undergone significant changes in any formulation. Therefore, the use of 0.5% nano-SiO2 in alginate films would be an easy and economically interesting way to improve thermal stability, without significantly reducing mechanical properties of the pure material. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021 2022-05-10T19:02:51Z 2022-05-10T19:02:51Z |
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.none.fl_str_mv |
|
dc.identifier.uri.fl_str_mv |
Carbohydrate Polymers v. 269, 118286-118292, 2021. DOI:10.1016/j.carbpol.2021.118286 http://repositorio.ital.sp.gov.br/jspui/handle/123456789/289 |
identifier_str_mv |
Carbohydrate Polymers v. 269, 118286-118292, 2021. DOI:10.1016/j.carbpol.2021.118286 |
url |
http://repositorio.ital.sp.gov.br/jspui/handle/123456789/289 |
dc.language.none.fl_str_mv |
|
dc.language.iso.fl_str_mv |
eng |
language_invalid_str_mv |
|
language |
eng |
dc.rights.none.fl_str_mv |
|
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
|
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Ltd. |
publisher.none.fl_str_mv |
Elsevier Ltd. |
dc.source.none.fl_str_mv |
reponame:Repositório do Instituto de Tecnologia de Alimentos instname:Instituto de Tecnologia de Alimentos (ITAL) instacron:ITAL |
instname_str |
Instituto de Tecnologia de Alimentos (ITAL) |
instacron_str |
ITAL |
institution |
ITAL |
reponame_str |
Repositório do Instituto de Tecnologia de Alimentos |
collection |
Repositório do Instituto de Tecnologia de Alimentos |
repository.name.fl_str_mv |
Repositório do Instituto de Tecnologia de Alimentos - Instituto de Tecnologia de Alimentos (ITAL) |
repository.mail.fl_str_mv |
bjftsec@ital.sp.gov.br || bjftsec@ital.sp.gov.br |
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1798311816770617344 |