Preparation of biodegradable polyesters/high-amylose-starch composites by reactive blending and their characterization

Two different biodegradable polyesters [polycaprolactone (PCL) and poly(3‐hydroxybutyrate‐co‐valerate) (PHBV)] were blended with a maize starch that had high amylose content through the use different reactive approaches. The compatibilization of both systems was obtained. PCL/starch composites were...

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Bibliographic Details
Published in:Journal of applied polymer science 2002-02, Vol.83 (7), p.1432-1442
Main Authors: Avella, Maurizio, Errico, Maria Emanuela, Rimedio, Raffaello, Sadocco, Patrizia
Format: Article
Language:English
Subjects:
Addition reactions
Agents
Applied sciences
biodegradability
Biodegradation
Blending
Characterization
compatibilization
Composite materials
composites
Exact sciences and technology
Interfaces (materials)
Natural polymers
Peroxides
Physicochemistry of polymers
Polyesters
reactive processing
Starch
Starch and polysaccharides
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Summary:Two different biodegradable polyesters [polycaprolactone (PCL) and poly(3‐hydroxybutyrate‐co‐valerate) (PHBV)] were blended with a maize starch that had high amylose content through the use different reactive approaches. The compatibilization of both systems was obtained. PCL/starch composites were obtained by the addition of a third reactive component that was able to act as a coupling agent, and the reactive interface of PHBV/starch composites was improved during blending with an organic peroxide. Thermal, morphological, and mechanical characterization showed that the compatibilized composite materials had better final proprieties than neat materials or composites prepared without compatibilization. Finally, the degradation of all prepared materials by a compost simulation test was investigated. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 1432–1442, 2002
ISSN:0021-8995
1097-4628
DOI:10.1002/app.2304