PROPERTIES OF BIODEGRADABLE THERMOPLASTIC STARCH

被引：3
|
作者：
高建平 [1 ]
王少敏 [1 ]
王为 [1 ]
于九皋 [1 ]
机构：
[1] 天津大学化学系
来源：
Transactions of Tianjin University | 1997年 / 02期
关键词：
热塑性淀粉; 生物降解; 流变学; 力学性能;
D O I：
暂无
中图分类号：
O631.2 [高聚物的物理性质];
学科分类号：
摘要：
淀粉与添加剂的混合物经挤出改性后可制得热塑性淀粉．研究了热塑性淀粉材料的生物降解性、流变特性和力学性能．结果表明：丙三醇和尿素均可降低材料的抗张强度，提高断裂身长率．因为前者起增塑剂的作用，而后者可破坏大分子间的作用力．热塑性淀粉融体在低剪切速率下表现为假塑性流体的特征．热塑性淀粉的生物降解程度略高于原淀粉．经挤出塑化后，淀粉的分子量呈下降的趋势．
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页数：5
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