热处理对聚乳酸／TMC-328结晶性能的影响  

The effect of heat treatment on crystalline structures property of PLA/TMC-328

作　　者：刘小文[1] 潘莉莎[1] 徐鼐[1] 卢凌彬[1] 庞素娟[1] 林强[2] 

机构地区：[1]海南大学材料与化工学院,海南优势资源化工材料应用技术教育部重点实验室,海口570228 [2]海南师范大学化学与化工学院,海口571158

出　　处：《化工新型材料》2011年第11期138-141,共4页New Chemical Materials

基　　金：海南大学青年基金项目资助(qqjj1167);科技人员服务企业行动项目(2009GJE20014)

摘　　要：熔融法制备了含成核剂TMC-328为0.3%的聚乳酸(PLA)/TMC-328共混物,采用偏光显微镜(POM)和差示扫描量热仪(DSC),研究了PLA/TMC-328共混物在不同加工条件下的结晶性能。结果表明,纯PLA在热处理下的结晶能力变化不大,添加TMC-328后,热处理可以提高PLA的结晶度,随着热处理温度的提高,结晶度从80℃下的0.26%增加到100℃下的40.03%,且低温下PLA冷结晶能力得到了提高。在满足工艺条件下,PLA/TMC-328共混物的最佳热处理温度为100℃。The PLA/TMC 328 blends which TMC-328 contents was 0. 3% were prepared by melt blending. Various techniques including DSC, polarized light microscopy（POM） were employed to investigate crystallinity under different pro cessing conditions and thermal properties of the samples. Experimental results indicated that the crystallization capacity of PEA had not absolutely change under heat treatment, and added TMC-328, the heat treatment can improve the degree of crystallization of PLA,from 12.77% at 80℃ to 40.03% at 100℃ with the temperature of heat treatment process increasing,and the cold crystallization capacity of PLA had been improved. To meet the technical conditions, the best heat treat- ment temperature of PLA/TMC-328 was 100℃.

关 键 词：聚乳酸 成核剂 冷结晶 热处理 结晶性能 

分 类 号：TQ311[化学工程—高聚物工业]