摘要
通过熔融共混制备聚乳酸(PLA)/聚(己二酸丁二酯-对苯二甲酸丁二酯)(PBAT)共混物。以环氧扩链剂(CE)为相容剂,研究了CE含量对共混物的流变行为、结晶行为的影响,并研究了CE含量为5份的共混物在冷结晶温度下的发泡行为以及泡沫的拉伸性能。结果表明,共混体系的相容性、结晶速率随着CE含量的增加而增加、可发性提高,在添加了5份CE的共混物中得到了微纳复合泡孔,泡孔密度达到1013个/cm^3,相对于PLA泡沫,共混物泡沫的断裂伸长率提高了40%。
The polylactic acid(PLA)/poly(butylene adipate-butylene terephthalate)(PBAT)blends were prepared by melt blending.The effect of the content of epoxy chain extender(CE)as a compatibilizer on the rheological behavior and crystallization behavior of the blends was investigated,and the foaming behavior of the blend containing 5 phr CE under the cold crystallization condition and the tensile properties of the resulting foams were studied.The results indicated that the blending system presented an increase in compatibility and crystallization rate with an increase of CE content,and its expandability was improved.The micro-nano complex cells were obtained for the blend foam with 5 phr of CE.This blend foam achieved a cell density of 1013 cells/cm^3 as like as the PLA foam,and its elongation at break increased by 40%.
作者
倪敬越
余科松
唐娅娥
陈士宏
王向东
NI Jingyue;YU Kesong;TANG Yae;CHEN Shihong;WANG Xiangdong(School of Materials and Mechanical Engineering,Beijing Technology and Business University,Beijing 100048,China;Zhengzhou University,Zhengzhou 450001,China;China Plastics Processing Industry Association,Beijing 100021,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2020年第4期20-24,共5页
China Plastics