Effects of silylated starch structure on hydrophobization and mechanical properties of thermoplastic starch foams made from potato starch
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/219759 |
Resumo: | Non-biodegradable single use packaging are a serious environmental problem as it generates large amounts of waste and is generally not recycled. These packages, especially those made of expanded polystyrene, can be replaced by thermoplastic starch foams. These foams have the advantage of being from renewable sources and biodegradable. However, this material is hydrophilic and becomes unusable when it is exposed to water. Hydrophobizing starch comes as an alternative to make the foams more resistant to contact with water. The purpose of the modification is to exchange starch hydroxyl groups for less polar groups such as silane groups. In this work, two silanes were used for starch silylation: 3-chloropropyl trimethoxysilane and Methyltrimethoxysilane. The foams were made using four materials: modified starch, gelatinized starch, polyvinyl alcohol and water. Results from water absorption tests and mechanical tests show that foams absorb less water and become more resistant with the addition of silylated starch. |
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Bergel, Bruno FelipeAraújo, Ludmila LeiteSilva, André Luis dos Santos daSantana, Ruth Marlene Campomanes2021-04-09T04:25:37Z20200144-8617http://hdl.handle.net/10183/219759001123830Non-biodegradable single use packaging are a serious environmental problem as it generates large amounts of waste and is generally not recycled. These packages, especially those made of expanded polystyrene, can be replaced by thermoplastic starch foams. These foams have the advantage of being from renewable sources and biodegradable. However, this material is hydrophilic and becomes unusable when it is exposed to water. Hydrophobizing starch comes as an alternative to make the foams more resistant to contact with water. The purpose of the modification is to exchange starch hydroxyl groups for less polar groups such as silane groups. In this work, two silanes were used for starch silylation: 3-chloropropyl trimethoxysilane and Methyltrimethoxysilane. The foams were made using four materials: modified starch, gelatinized starch, polyvinyl alcohol and water. Results from water absorption tests and mechanical tests show that foams absorb less water and become more resistant with the addition of silylated starch.application/pdfengCarbohydrate polymers [recurso eletrônico]. [Oxfordshire, England]. Vol. 241 (Aug. 2020), [Article] 116274, 9 p.EspumasAmido termoplásticoSilanoPropriedades mecânicas dos materiaisTPS foam3-chloropropyl trimethoxysilaneMethyltrimethoxysilaneSilylated starchEffects of silylated starch structure on hydrophobization and mechanical properties of thermoplastic starch foams made from potato starchEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001123830.pdf.txt001123830.pdf.txtExtracted Texttext/plain53383http://www.lume.ufrgs.br/bitstream/10183/219759/2/001123830.pdf.txt8cc2689bfd5ae4c9dfa9809879469912MD52ORIGINAL001123830.pdfTexto completo (inglês)application/pdf2326367http://www.lume.ufrgs.br/bitstream/10183/219759/1/001123830.pdf4146f58254c3b8ace7931557d14facdcMD5110183/2197592021-05-07 05:12:39.506684oai:www.lume.ufrgs.br:10183/219759Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-05-07T08:12:39Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Effects of silylated starch structure on hydrophobization and mechanical properties of thermoplastic starch foams made from potato starch |
title |
Effects of silylated starch structure on hydrophobization and mechanical properties of thermoplastic starch foams made from potato starch |
spellingShingle |
Effects of silylated starch structure on hydrophobization and mechanical properties of thermoplastic starch foams made from potato starch Bergel, Bruno Felipe Espumas Amido termoplástico Silano Propriedades mecânicas dos materiais TPS foam 3-chloropropyl trimethoxysilane Methyltrimethoxysilane Silylated starch |
title_short |
Effects of silylated starch structure on hydrophobization and mechanical properties of thermoplastic starch foams made from potato starch |
title_full |
Effects of silylated starch structure on hydrophobization and mechanical properties of thermoplastic starch foams made from potato starch |
title_fullStr |
Effects of silylated starch structure on hydrophobization and mechanical properties of thermoplastic starch foams made from potato starch |
title_full_unstemmed |
Effects of silylated starch structure on hydrophobization and mechanical properties of thermoplastic starch foams made from potato starch |
title_sort |
Effects of silylated starch structure on hydrophobization and mechanical properties of thermoplastic starch foams made from potato starch |
author |
Bergel, Bruno Felipe |
author_facet |
Bergel, Bruno Felipe Araújo, Ludmila Leite Silva, André Luis dos Santos da Santana, Ruth Marlene Campomanes |
author_role |
author |
author2 |
Araújo, Ludmila Leite Silva, André Luis dos Santos da Santana, Ruth Marlene Campomanes |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Bergel, Bruno Felipe Araújo, Ludmila Leite Silva, André Luis dos Santos da Santana, Ruth Marlene Campomanes |
dc.subject.por.fl_str_mv |
Espumas Amido termoplástico Silano Propriedades mecânicas dos materiais |
topic |
Espumas Amido termoplástico Silano Propriedades mecânicas dos materiais TPS foam 3-chloropropyl trimethoxysilane Methyltrimethoxysilane Silylated starch |
dc.subject.eng.fl_str_mv |
TPS foam 3-chloropropyl trimethoxysilane Methyltrimethoxysilane Silylated starch |
description |
Non-biodegradable single use packaging are a serious environmental problem as it generates large amounts of waste and is generally not recycled. These packages, especially those made of expanded polystyrene, can be replaced by thermoplastic starch foams. These foams have the advantage of being from renewable sources and biodegradable. However, this material is hydrophilic and becomes unusable when it is exposed to water. Hydrophobizing starch comes as an alternative to make the foams more resistant to contact with water. The purpose of the modification is to exchange starch hydroxyl groups for less polar groups such as silane groups. In this work, two silanes were used for starch silylation: 3-chloropropyl trimethoxysilane and Methyltrimethoxysilane. The foams were made using four materials: modified starch, gelatinized starch, polyvinyl alcohol and water. Results from water absorption tests and mechanical tests show that foams absorb less water and become more resistant with the addition of silylated starch. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020 |
dc.date.accessioned.fl_str_mv |
2021-04-09T04:25:37Z |
dc.type.driver.fl_str_mv |
Estrangeiro 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://hdl.handle.net/10183/219759 |
dc.identifier.issn.pt_BR.fl_str_mv |
0144-8617 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001123830 |
identifier_str_mv |
0144-8617 001123830 |
url |
http://hdl.handle.net/10183/219759 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Carbohydrate polymers [recurso eletrônico]. [Oxfordshire, England]. Vol. 241 (Aug. 2020), [Article] 116274, 9 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Repositório Institucional da UFRGS |
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Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
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