滑石粉对生物降解塑料聚乳酸结晶行为的影响  

Effect of Talc on the crystallization of poly （lactide）

作　　者：钱欣[1] 沈兆宏[1] 钱仕杰[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,浙江杭州310014

出　　处：《功能材料》2007年第A05期1888-1890,共3页Journal of Functional Materials

摘　　要：采用DSC、POM对聚乳酸及聚乳酸借石粉体系的结晶行为进行了研究。结果表明，滑石粉是聚乳酸有效的成核剂，滑石粉的加入显著提高了聚乳酸的结晶速度和结晶度，1份滑石粉为比较适合的用量。Differential scanning calorimetry was used to characterize the melting behavior and isothermal crystallization kinetics of pure poly （lactide） and blends of PLA with Talc. The experimental data were evaluated using the well-known Avrami kinetic model. The Avrami exponent, constant, half-time of crystallization, and degrees of crystallinity were obtained. Talc effectively increased the crystallization rate of PLA, even at 1 ： 100（WTalc/WpLA）.

关 键 词：聚乳酸 滑石粉 等温结晶 结晶动力学 

分 类 号：TQ050.4[化学工程]