Biodegradable corn starch loose- fill. I. The effect of the extrusion temperature on the physical properties of loose-fill

被引：0
|
作者：
Dae-lyoung Lim
Seung-soon Im
Jeong-seok Han
Sang-hyun Yim
Jin-sung Kim
Young-mok Lee
机构：
[1] College of Engineering,Department of Textile Engineering
[2] Han- yang University,Department of Textile
[3] Sam Yang Genex Research Institute,undefined
[4] Bucheon Technical College,undefined
来源：
Journal of environmental polymer degradation | 1997年 / 5卷 / 4期
关键词：
Corn starch; loose-fill; structural changes; physical properties;
D O I：
10.1007/BF02763663
中图分类号：
学科分类号：
摘要：
Extrusion with an intermeshing corotating twin-screw extruder with a limited amount of water caused structural changes in corn starch. The structural changes resulted in a transformation-from a semicrystalline to an amorphous state and the development of orientation of molecular chains in the amorphous region during extrusion. These structural changes, in turn, caused an increase in theTg, tensile strength, and resilience of the extruded corn starch. Our experimental results showed that the tensile properties and resilience of the expanded corn starch extruded at 240‡C were the best: tensile strength, 1.7 kPa; tensile modulus, 40.4 kPa; and resilience, 57.2%. Extrusion produced an expanded corn starch suitable for protective loose-fill.
引用
收藏
页码：191 / 197
页数：6
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