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Eigenschaften von Folien aus Stärke-PCL-Mischungen

Properties of Films Made out of Starch-PCL Mixtures
: Bader, H.; Langowski, H.-C.; Setyowati, K.

Verpackungs-Rundschau 47 (1996), No.9, pp.54-56
ISSN: 0042-4307
ISSN: 0341-7131
Journal Article
Fraunhofer ILV ( IVV) ()
aging; Alterung; barrier properties; Kunststoff-Folie; oxygen permeability; plastics film; Prüfung; Sauerstoffdurchlässigkeit; Sperreigenschaft; starch; Stärke; testing; Waserdampfdurchlässigkeit; water vapour permeability

The article discusses the results of a number of tests. Tested were the basic application properties of blends from thermoplasticized wheat starch (TPWS) and poly-epsilon-caprolactone (PCL) in different mixtures stored at different humidities for up to two months. It was shown that important improvements in the water vapour barrier properties, the tensile-stretching behaviour and the aging embrittlement are only possible for a PCL percentage of 50 per cent. But these are accompanied by increased oxygen permeability. The results stand in contrast with properties of commercially available starch/PCL basis film material which have obviously shown better properties by using biologically non-degradable synthetic thermoplastics.