Processing and characterization of biodegradable products based on starch

被引：115

作者：

Funke, U ^{[1
]}

Bergthaller, W ^{[1
]}

Lindhauer, MG ^{[1
]}

机构：

[1] Fed Res Ctr Cereal, Potato & Lipid Res, D-32756 Detmold, Germany

来源：

POLYMER DEGRADATION AND STABILITY | 1998年 / 59卷 / 1-3期

关键词：

D O I：

10.1016/S0141-3910(97)00163-8

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Different types of starch were processed in blend systems with natural plasticizers and commercial fibres by conventional extrusion and injection moulding techniques. Processing conditions and product qualities differed widely according to the kind of starches and additives used. Starch polymer characteristics, i.e. amylose/amylopectin ratio and molecular mass distribution, were studied in native and extruded samples in order to reveal structural effects on product quality. As a result it could be shown that thermomechanical treatments of starch caused significant depolymerization, especially of the amylopectin fraction, while the amylose fraction remained stable. Considerable improvements in product properties were achieved by adding small amounts of fibres to the starch samples. Blend systems with 2-7% fibres resulted in an increase of tensile strength and water resistance of these products. (C) 1998 Elsevier Science Limited. All rights reserved.

引用

页码：293 / 296

页数：4