摘要
利用差示扫描量热法(DSC)研究了2种不同端基的超支化聚酯(HBP)对聚对苯二甲酸乙二醇酯(PET)非等温结晶行为的影响,用莫志深法对非等温结晶动力学进行了分析,通过偏光显微镜(POM)观察了各体系的结晶形态。结果表明:PET和PET/HBP的非等温结晶过程可用莫志深动力学方程来描述;HBP的加入并没有改变PET的结晶成核机理和生长方式;端羟基超支化聚酯(HBP-OH)的加入使得PET的结晶速率变慢,对晶体生长起到了抑制作用;端十六烷基超支化聚酯(HBP-C16)在PET中起到了很好的结晶促进剂作用,能够促进PET结晶。
The influences of two kinds of hyperbranched polyester（HBP）with different terminal groups on the non-isothermal crystallization behavior of poly（ethylene terephthalate）（PET）were studied by DSC.The non-isothermal crystallization data for PET and PET/HBP were analyzed by Mo Zhishen methods.The crystalline morphology was examined by POM.The results indicate that the non-isothermal crystallization processes of PET and PET/HBP may be described by the kinetic equation of Mo.The addition of HBP does not change the nucleation mechanism and geometry of crystal growth of PET.The crystallization rate of PET decreases with adding hydroxyl-terminated hyperbranched polyester（HBP-OH）,which plays an inhibition for crystal growth of PET.Hexadecylterminated hyperbranched polyester（HBP-C16）plays the role of crystallization rate promoter for the crystallization of PET in the blends.
出处
《现代塑料加工应用》
CAS
北大核心
2014年第5期1-4,共4页
Modern Plastics Processing and Applications
基金
江苏省太阳能电池材料与技术重点实验室项目(201105)资助
关键词
聚对苯二甲酸乙二醇酯
非等温结晶
超支化聚酯
端十六烷基超支化聚酯
poly（ethylene terephthalate）
non-isothermal crystallization
hyperbranchedpolyester
hexadecyl-terminated hyperbranched polyester
