菱粉增韧聚乳酸复合材料的制备与性能研究  

Study on Fabrication and Properties of PLA Composites Toughened by Waterchestnut Starch

作　　者：王娜 赵莹 朱明 楚高利 于翔 

机构地区：[1]河南工程学院材料与化学工程学院,河南郑州450007

出　　处：《塑料科技》2017年第10期76-79,共4页Plastics Science and Technology

基　　金：国家自然科学基金(61301231)

摘　　要：以菱粉(WCS)为增韧剂制备了聚乳酸(PLA)/WCS复合材料,并对复合材料的结晶性能和力学性能进行了系统分析。结果表明:当PLA基体中加入WCS之后,PLA/WCS复合材料的结晶性能得到改善,其中WCS起到PLA成核剂的作用。WCS对PLA具有明显的增韧作用,但材料的强度则有所下降。同时,WCS的引入改善了PLA的热稳定性,有效拓宽了PLA的应用范围。Poly（lactic acid）/waterchestnut starch（PLA/WCS） composites were prepared with WCS as the toughening modifier, and crystallization properties and mechanical properties of the composites were systematically analyzed. The results show that with the increase of WCS content, the crystallization properties of PLA/WCS composites improve gradually, and WCS acts as the nucleating agent of PLA. The WCS has obvious toughening effect on PLA, but tensile strength of the modified material decreases. At the same time, WCS can improve the thermal stability of PLA, and broaden the application range of PLA effectively.

关 键 词：聚乳酸 菱粉 增韧 力学性能 结晶性能 

分 类 号：TB332[一般工业技术—材料科学与工程]