摘要
采用锥板流变仪研究聚L-乳酸(PLLA)的流变性能,并对直接法熔融缩聚制备的聚乳酸进行了测试。结果表明:PLLA熔体属于切力变稀流体;PLLA熔体的表观粘流活化能较高,其表观黏度对温度的敏感性高。
Rheological behavior of PLLA melt was tested using cone-and-plate rheometer. It was found that PLLA melt was shear thinning fluid. The flow activation energy of PLLA was higher than that of regular polymer, which indicated that the viscosity of PLLA was more sensitive to temperature. In this paper, PLLA was prepared by melting condensation.
出处
《合成纤维》
CAS
北大核心
2005年第5期4-6,11,共4页
Synthetic Fiber in China
关键词
聚乳酸
锥板流变仪
熔体
流变
poly(lactic acid), cone-and-plate rheometer, melt, rheological behavior
