Preparation and properties of starch-based biopolymers modified with difunctional isocyanates

The present work reports on the preparation of thermoplastic starch (TPS) modified in situ with a diisocyanate derivative. Evidence of the condensation reaction between the hydroxyl groups of starch and glycerol with the isocyanate function (NCO) was confirmed by FTIR analysis. The evolution of the...

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Detalles Bibliográficos
Autores: Belhassen, Ramzi, Vilaseca Morera, Fabiola, Mutjé Pujol, Pere, Boufi, Sami
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/7677
Acceso en línea:http://hdl.handle.net/10256/7677
Access Level:acceso abierto
Palabra clave:Biopolímers
Biopolymers
Midó
Starch
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spelling Preparation and properties of starch-based biopolymers modified with difunctional isocyanatesBelhassen, RamziVilaseca Morera, FabiolaMutjé Pujol, PereBoufi, SamiBiopolímersBiopolymersMidóStarchThe present work reports on the preparation of thermoplastic starch (TPS) modified in situ with a diisocyanate derivative. Evidence of the condensation reaction between the hydroxyl groups of starch and glycerol with the isocyanate function (NCO) was confirmed by FTIR analysis. The evolution of the properties of the ensuing TPS, in term of mechanical properties, microstructure, and water sensitivity, was investigated using tensile mechanical, dynamic mechanical thermal analysis (DMTA), X-ray diffraction (XRD), and water uptake. The results showed that the addition of isocyanate did not affect the crystallinity of the TPS and slightly reduced the water uptake of the material. The evolution of the mechanical properties with ageing became less pronounced by the addition of the isocyanate as their amount exceeded 4 to 6wt%.North Carolina State University2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10256/7677http://hdl.handle.net/10256/7677© BioResources, 2011, vol. 6, núm. 1, p. 81-102Articles publicats (D-EQATA)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/issn/1930-2126Tots els drets reservatsinfo:eu-repo/semantics/openAccessoai:recercat.cat:10256/76772026-05-29T05:05:01Z
dc.title.none.fl_str_mv Preparation and properties of starch-based biopolymers modified with difunctional isocyanates
title Preparation and properties of starch-based biopolymers modified with difunctional isocyanates
spellingShingle Preparation and properties of starch-based biopolymers modified with difunctional isocyanates
Belhassen, Ramzi
Biopolímers
Biopolymers
Midó
Starch
title_short Preparation and properties of starch-based biopolymers modified with difunctional isocyanates
title_full Preparation and properties of starch-based biopolymers modified with difunctional isocyanates
title_fullStr Preparation and properties of starch-based biopolymers modified with difunctional isocyanates
title_full_unstemmed Preparation and properties of starch-based biopolymers modified with difunctional isocyanates
title_sort Preparation and properties of starch-based biopolymers modified with difunctional isocyanates
dc.creator.none.fl_str_mv Belhassen, Ramzi
Vilaseca Morera, Fabiola
Mutjé Pujol, Pere
Boufi, Sami
author Belhassen, Ramzi
author_facet Belhassen, Ramzi
Vilaseca Morera, Fabiola
Mutjé Pujol, Pere
Boufi, Sami
author_role author
author2 Vilaseca Morera, Fabiola
Mutjé Pujol, Pere
Boufi, Sami
author2_role author
author
author
dc.subject.none.fl_str_mv Biopolímers
Biopolymers
Midó
Starch
topic Biopolímers
Biopolymers
Midó
Starch
description The present work reports on the preparation of thermoplastic starch (TPS) modified in situ with a diisocyanate derivative. Evidence of the condensation reaction between the hydroxyl groups of starch and glycerol with the isocyanate function (NCO) was confirmed by FTIR analysis. The evolution of the properties of the ensuing TPS, in term of mechanical properties, microstructure, and water sensitivity, was investigated using tensile mechanical, dynamic mechanical thermal analysis (DMTA), X-ray diffraction (XRD), and water uptake. The results showed that the addition of isocyanate did not affect the crystallinity of the TPS and slightly reduced the water uptake of the material. The evolution of the mechanical properties with ageing became less pronounced by the addition of the isocyanate as their amount exceeded 4 to 6wt%.
publishDate 2011
dc.date.none.fl_str_mv 2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/7677
http://hdl.handle.net/10256/7677
url http://hdl.handle.net/10256/7677
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1930-2126
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Tots els drets reservats
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv North Carolina State University
publisher.none.fl_str_mv North Carolina State University
dc.source.none.fl_str_mv © BioResources, 2011, vol. 6, núm. 1, p. 81-102
Articles publicats (D-EQATA)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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