Nanocomposites Based on Cassava Starch and Chitosan-Modified Clay: Physico‑Mechanical Properties and Biodegradability in Simulated Compost Soil

Detalhes bibliográficos
Autor(a) principal: Perotti,Gustavo F
Data de Publicação: 2017
Outros Autores: Kijchavengkul,Thitisilp, Auras,Rafael A, Constantino,Vera R. L
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=S0103-50532017000400649
Resumo: Organic-inorganic nanocomposites based on cassava starch, glycerol and chitosan-modified Veegum® HS clay mineral at two different low polymer-to-clay ratios (2.5 and 5.0 wt.%) were prepared by extrusion producing flexible, transparent and homogeneous plastics as potential candidates for agricultural purposes. X-ray diffraction and transmission electron microscopy images revealed the presence of both intercalated and exfoliated nanocomposites in all samples, in which exfoliation is the predominant type of microscopic structure. Statistically significant improvements of over 20% on the tensile strength and Young's modulus were observed for samples containing chitosan-modified clay in comparison to pristine thermoplastic starch. Chitosan deeply affects the conversion of polymer carbon to CO2 through biodegradation. Mineralization values for the sample loaded with 5.0 wt.% of chitosan-modified clay in simulated compost soil showed a reduction of almost 40% in comparison to thermoplastic starch, benefiting applications where delay degradation is required.
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spelling Nanocomposites Based on Cassava Starch and Chitosan-Modified Clay: Physico‑Mechanical Properties and Biodegradability in Simulated Compost Soilorganic-inorganic hybridsnanocompositesextrusioncassava starchVeegum clayOrganic-inorganic nanocomposites based on cassava starch, glycerol and chitosan-modified Veegum® HS clay mineral at two different low polymer-to-clay ratios (2.5 and 5.0 wt.%) were prepared by extrusion producing flexible, transparent and homogeneous plastics as potential candidates for agricultural purposes. X-ray diffraction and transmission electron microscopy images revealed the presence of both intercalated and exfoliated nanocomposites in all samples, in which exfoliation is the predominant type of microscopic structure. Statistically significant improvements of over 20% on the tensile strength and Young's modulus were observed for samples containing chitosan-modified clay in comparison to pristine thermoplastic starch. Chitosan deeply affects the conversion of polymer carbon to CO2 through biodegradation. Mineralization values for the sample loaded with 5.0 wt.% of chitosan-modified clay in simulated compost soil showed a reduction of almost 40% in comparison to thermoplastic starch, benefiting applications where delay degradation is required.Sociedade Brasileira de Química2017-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532017000400649Journal of the Brazilian Chemical Society v.28 n.4 2017reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0103-5053.20160213info:eu-repo/semantics/openAccessPerotti,Gustavo FKijchavengkul,ThitisilpAuras,Rafael AConstantino,Vera R. Leng2017-03-06T00:00:00Zoai:scielo:S0103-50532017000400649Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2017-03-06T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Nanocomposites Based on Cassava Starch and Chitosan-Modified Clay: Physico‑Mechanical Properties and Biodegradability in Simulated Compost Soil
title Nanocomposites Based on Cassava Starch and Chitosan-Modified Clay: Physico‑Mechanical Properties and Biodegradability in Simulated Compost Soil
spellingShingle Nanocomposites Based on Cassava Starch and Chitosan-Modified Clay: Physico‑Mechanical Properties and Biodegradability in Simulated Compost Soil
Perotti,Gustavo F
organic-inorganic hybrids
nanocomposites
extrusion
cassava starch
Veegum clay
title_short Nanocomposites Based on Cassava Starch and Chitosan-Modified Clay: Physico‑Mechanical Properties and Biodegradability in Simulated Compost Soil
title_full Nanocomposites Based on Cassava Starch and Chitosan-Modified Clay: Physico‑Mechanical Properties and Biodegradability in Simulated Compost Soil
title_fullStr Nanocomposites Based on Cassava Starch and Chitosan-Modified Clay: Physico‑Mechanical Properties and Biodegradability in Simulated Compost Soil
title_full_unstemmed Nanocomposites Based on Cassava Starch and Chitosan-Modified Clay: Physico‑Mechanical Properties and Biodegradability in Simulated Compost Soil
title_sort Nanocomposites Based on Cassava Starch and Chitosan-Modified Clay: Physico‑Mechanical Properties and Biodegradability in Simulated Compost Soil
author Perotti,Gustavo F
author_facet Perotti,Gustavo F
Kijchavengkul,Thitisilp
Auras,Rafael A
Constantino,Vera R. L
author_role author
author2 Kijchavengkul,Thitisilp
Auras,Rafael A
Constantino,Vera R. L
author2_role author
author
author
dc.contributor.author.fl_str_mv Perotti,Gustavo F
Kijchavengkul,Thitisilp
Auras,Rafael A
Constantino,Vera R. L
dc.subject.por.fl_str_mv organic-inorganic hybrids
nanocomposites
extrusion
cassava starch
Veegum clay
topic organic-inorganic hybrids
nanocomposites
extrusion
cassava starch
Veegum clay
description Organic-inorganic nanocomposites based on cassava starch, glycerol and chitosan-modified Veegum® HS clay mineral at two different low polymer-to-clay ratios (2.5 and 5.0 wt.%) were prepared by extrusion producing flexible, transparent and homogeneous plastics as potential candidates for agricultural purposes. X-ray diffraction and transmission electron microscopy images revealed the presence of both intercalated and exfoliated nanocomposites in all samples, in which exfoliation is the predominant type of microscopic structure. Statistically significant improvements of over 20% on the tensile strength and Young's modulus were observed for samples containing chitosan-modified clay in comparison to pristine thermoplastic starch. Chitosan deeply affects the conversion of polymer carbon to CO2 through biodegradation. Mineralization values for the sample loaded with 5.0 wt.% of chitosan-modified clay in simulated compost soil showed a reduction of almost 40% in comparison to thermoplastic starch, benefiting applications where delay degradation is required.
publishDate 2017
dc.date.none.fl_str_mv 2017-04-01
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=S0103-50532017000400649
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532017000400649
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.21577/0103-5053.20160213
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.28 n.4 2017
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
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