期刊论文

Wu, Yiqiang(wuyq0506@126.com)

中文

材料导报

1005-023X

2017

31

8

41-45

10.11896/j.issn.1005-023X.2017.016.009

SWZCL2016-04:生物质材料科学与技术教育部重点实验室(东北林业大学)开放基金 15C1428:湖南省教育厅科学研究项目 2016RS2010:湖南省科技创新平台与人才计划项目 2016TP1013:湖南省科技创新平台与人才计划项目

本校为第一且通讯机构

以玉米淀粉和聚乳酸(PLA)为原料,马来酸酐(MAH)为改性剂,通过熔融挤出法制备淀粉/PLA复合材料。研究了MAH分别作为增容剂和淀粉酯化剂这两种改性方法对淀粉/PLA相容性的影响,并对复合材料的熔融加工性能、力学性能和耐水性能进行了测试。X射线衍射(XRD)、扫描电子显微镜(SEM)和热重分析(TGA)结果都证明,MAH与原淀粉先进行干法酯化改性再与PLA复配制得酯化淀粉/PLA复合材料,比MAH作为增容剂直接添加制得原淀粉/MAH/PLA复合材料具有更好的界面相容性。受界面相容性提高程度的影响,酯化淀粉/PLA复合材料的熔融加工性能、拉伸强度、弯曲强度、断裂伸长率和耐水性能都优于原淀粉/MAH/PLA复合材料。

Starch/PLA composites were prepared by melt extrusion, in which corn starch and poly (lactic acid) (PLA) served as raw materials, maleic anhydride (MAH) as modifier. The effects of the two modifying methods by MAH, i.e. MAH as compatibilizing agent and MAH as esterifying agent of starch, on the compatibility of starch/PLA were studied. The melt processing property, mechanical properties and water resistance of composites were also tested. X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA) results ...