聚丁二酸丁二醇-共-对苯二甲酸丁二酯等温结晶性能Isothermal Crystallization Kinetics of Biodegradable Poly(butylene succinate-co-butylene terephthalate)
许新建,李发学,余燕平,俞建勇
XU Xin-jian, LI Fa-xue,YU Yan-ping, YU Jian-yun (College of Textile
摘要(Abstract)：
利用差示扫描量热仪(DSC)对制备的生物降解性聚丁二酸丁二醇-共-对苯二甲酸丁二醇酯(PBST)的等温结晶性能进行了研究。根据Avrami方程计算发现:PBST共聚酯的Avrami指数n基本上均大于3,表明结晶时聚合物趋向于以球晶形式三维生长。偏光显微镜(POM)直观地证明了这一结果。
In this paper, the isothermal crystallization kinetics of the prepared poly(butylene succinate-co-butylene terephthalate) (PBST) is investigated by differential scanning calorimeter (DSC). According to Avrami equation, the values of exponent n for the two copolyesters are more than 3, which probably corresponds to a 3-dimensional spherulitic growth. Polarized light micrographs confirm the results.
关键词(KeyWords)：
PBST共聚酯;差示扫描量热仪;等温结晶;Avrami方程
PBST copolyester, DSC, isocrystallization, Avrami equation
基金项目(Foundation): 国家科技攻关项目(2005BA313C)。
作者(Author):
许新建,李发学,余燕平,俞建勇
XU Xin-jian, LI Fa-xue,YU Yan-ping, YU Jian-yun (College of Textile
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