Preparation and properties of starch-based biopolymers modified with difunctional isocyanates
dc.contributor.author
dc.date.accessioned
2013-04-02T09:53:28Z
dc.date.available
2013-04-02T09:53:28Z
dc.date.issued
2011
dc.identifier.issn
1930-2126
dc.identifier.uri
dc.description.abstract
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%.
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
North Carolina State University
dc.relation.ispartof
© BioResources, 2011, vol. 6, núm. 1, p. 81-102
dc.relation.ispartofseries
Articles publicats (D-EQATA)
dc.rights
Tots els drets reservats
dc.subject
dc.title
Preparation and properties of starch-based biopolymers modified with difunctional isocyanates
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.embargo.terms
Cap
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.idgrec
016626