Journal
CARBOHYDRATE POLYMERS
Volume 83, Issue 2, Pages 659-664Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2010.08.035
Keywords
Starch; Glycerol; Polyol; Composite; Biodegradable
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Polyol mixtures including mixture of conventional plasticizer glycerol and higher molecular weight polyol (HP) such as xylitol sorbitol and maltitol were used to plasticize corn starch by melt-blending method and effect of the polyol mixture on the pocessibility microstructures thermal stability and mechanical properties of these starch composites (SC) were investigated The introduction of HP providing greater processing torque can dramatically reduce the strong molecular chain interaction in starch without obvious residual starch granules in the starch composites The increasing of the molecular weight and content of HP in polyol mixture is beneficial for the significant enhancement of the thermal stability and mechanical strength of the starch composite Meanwhile the addition of HP besides conventional glycerol increases the modulus and phase transition temperature of the starch composite too Crown Copyright (C) 2010 Published by Elsevier Ltd All rights reserved
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