Extruded Cornstarch-Glycerol-Polyvinyl Alcohol Blends: Mechanical Properties, Morphology, and Biodegradability

Lijun Mao; Syed Imam; Sherald Gordon

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Extruded Cornstarch-Glycerol-Polyvinyl Alcohol Blends: Mechanical Properties, Morphology, and Biodegradability

机译：挤出的玉米淀粉-甘油-聚乙烯醇共混物：机械性能，形态和生物降解性

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Elongation properties of extruded cornstarch were improved by blending with glycerol. Further blending of starch-glycerol with polyvinyl alcohol (PVOH) resulted in significant improvements in both tensile strength (TS) and elongation at break. Samples of starch-glycerol without PVOH equilibrated at 50/100 relative humidity had a TS of 1.8 MPa and elongation of 113/100, whereas those containing PVOH had a TS and elongation of 4 MPa and 150/100, respectively. Dynamic mechanical analysis (DMA) of starch-glycerol-PVOH blends showed that decreases in glass transition tempera- ture (T_g values) were proportional to glycerol content.

机译：通过与甘油共混，可改善挤出玉米淀粉的伸长性能。淀粉甘油与聚乙烯醇（PVOH）的进一步共混可显着提高拉伸强度（TS）和断裂伸长率。没有在50/100相对湿度下平衡过PVOH的淀粉-甘油样品的TS和1.8的伸长率分别为1.8 MPa和113/100，而含PVOH的淀粉-甘油样品的TS和伸长率分别为4 MPa和150/100。淀粉-甘油-PVOH混合物的动态力学分析（DMA）表明，玻璃化转变温度（T_g值）的下降与甘油含量成正比。

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《Journal of Polymers and the Environment》 |2000年第4期|p.205-211|共7页
作者
Lijun Mao; Syed Imam; Sherald Gordon;
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正文语种 eng
中图分类环境科学、安全科学;
关键词
Extruded; polyvinyl alcohol; starch; glycerol;

机译：挤压聚乙烯醇;淀粉;甘油;

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Extruded Cornstarch-Glycerol-Polyvinyl Alcohol Blends: Mechanical Properties, Morphology, and Biodegradability

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