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Crystallinity in starch plastics: consequences for material properties
June 1997
June 1997
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Abstract
The processing of starches with biodegradable additives has made biodegradable plastics
suitable for a number of applications. Starch plastics are partially crystalline as
a result of residual crystallinity and the recrystallization of amylose and amylopectin.
Such crystallinity is a key determinant of the product's properties. This article
describes the influence of processing and storage conditions on starch crystallinity
and offers possible explanations for the various properties of starch plastics, in
particular for the problems associated with ageing, in terms of the different crystalline
structures.