摘要
采用熔融缩聚法合成一定相对分子质量的聚乳酸(PLA),然后通过双螺杆反应挤出机与聚己内酯多元醇(PCL)的聚氨酯预聚体进行熔体扩链,制备聚乳酸共聚物。研究了熔体扩链产物的相对分子质量、形态结构、热性能和力学性能。结果表明,双螺杆反应挤出制备聚乳酸共聚物是可行的,熔体扩链后产物的相对分子质量有大幅度提高,产物是热塑性的,并且比釜式反应混合效果好。
Poly（lactic acid）（PLA）-poly（e-caprolactone）（PCL）copolymer was prepared by a twin screw extruder. The molecular weight, morphology, structure, thermal properties and mechanical properties were measured. The results showed that it was feasible to prepare PLA-PCL copolymer by twin-screw chain extension. The processing of copolymerization of PLA and PCL by reactive extrusion was better than the processing by batch-typed reactor.
出处
《东华大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第3期110-114,共5页
Journal of Donghua University(Natural Science)
关键词
聚乳酸
PCL聚氨酯预聚体
双螺杆
熔体扩链
反应挤出
poly（lactic acid）, poly（ε-caprolactone）, twin screw, chain extension, reactive extrusion
