中国塑料 ›› 2011, Vol. 25 ›› Issue (12): 63-66 .DOI: 10.19491/j.issn.1001-9278.2011.12.018

• 加工与应用 • 上一篇    下一篇

聚乙二醇对聚乳酸/糯米粉共混物性能的影响

刘建美 戚嵘嵘 罗宇 陆佳琦 胡新利   

  1. 上海交通大学 上海交通大学 上海交通大学 上海交通大学 上海交通大学
  • 收稿日期:2011-08-23 修回日期:1900-01-01 出版日期:2011-12-26 发布日期:2011-12-26

Effect of PEG on Properties of Poly( lactic acid)/Glutinous Rice Flour Blends

Jianmei LIU Rongrong QI Yu LUO Jiaqi LU Xinli HU   

  • Received:2011-08-23 Revised:1900-01-01 Online:2011-12-26 Published:2011-12-26
  • Contact: Rongrong QI

摘要: 采用天然可降解糯米粉作为填料、以聚乙二醇(PEG)作为增塑剂,制备了聚乳酸/糯米粉共混物,并研究了糯米粉及PEG含量对共混物力学性能、微观形态和吸水率的影响。结果表明,糯米粉的加入提高了PLA的吸水率,却降低了其力学性能;随着PEG含量的增加,共混物的冲击强度先增大后减小, 当PEG含量为12 % (质量分数,下同)时,共混物冲击强度达到22.8 kJ/m2,较纯PLA提高了近4倍,共混物的吸水率也明显提高;随着PEG含量的增加,糯米粉与PLA间的相容性提高。

关键词: 聚乳酸, 糯米粉, 吸水率, 聚乙二醇, 力学性能

Abstract: Blends of poly(L-lactide)(PLA), glutinous rice flour, and polyethylene glycol (PEG) were prepared and studied. Glutinous rice powder increased the water absorption of PLA, but reducing its mechanical properties. The impact strength of the composite first increased then decreased as the amount of PEG increased, and showed a maximum of 22.8 kJ/m2 when PEG amount was 12 %, which was 4 times that of neat PLA. With increasing PEG content, the compatibility between glutinous rice flour and PLA increased.

Key words: poly(lactic acid), glutinous rice flour, water absorption, poly(ethylene glycol), mechanical properties