The Effect of Self-nucleation on Isothermal Crystallization Kinetics of Poly(butylene succinate)(PBS) Investigated by Differential Fast Scanning Calorimetry  

作　　者：Jing Jiang Evgeny Zhuravlev Wen-bing Hu Christoph Schick 周东山 

机构地区：[1]Department of Polymer Science and Engineering,School of Chemistry and Chemical Engineering,State Key Laboratory of Coordination Chemistry,Nanjing University, Nanjing 210023, China [2]University of Rostock,Institute of Physics, Wismarsche Strasse 43-45, 18051 Rostock, Germany [3]School of Physical Science and Technology,Xinjiang Key Laboratory and Phase Transitions and Microstructures in Condensed Matters,Yili Normal University, Yining 835000, China

出　　处：《Chinese Journal of Polymer Science》2017年第8期1009-1019,共11页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21474049,51673094 and 21404055);the Shenzhen Science and Technology Innovation Committee(Nos.JCYJ20160531151102203 and JCYJ20160608140827794);Tianshan Scholars Program by Yili Normal University

摘　　要：Differential fast scanning calorimetry（DFSC） was employed on the study of self-nucleation behavior of poly（butylene succinate）（PBS）.The ultra-fast cooling ability of DFSC allows investigating the effect of self-nucleation on the isothermal crystallization kinetics over a wide temperature range.Crystallization half-time,instead of crystallization peak temperature,was used to describe the self-nucleation behavior,and the self-nucleation domain for the samples crystallized at different temperatures was determined.Due to the competition between homogenous nucleation and self-nuclei,the effect of self-nucleation was less pronounced at high supercooling than that for the sample isothermally crystallized at higher temperature.An efficiency scale to judge the efficiency of nucleating agents from the crystallization half-time was also introduced in this work.Differential fast scanning calorimetry（DFSC） was employed on the study of self-nucleation behavior of poly（butylene succinate）（PBS）.The ultra-fast cooling ability of DFSC allows investigating the effect of self-nucleation on the isothermal crystallization kinetics over a wide temperature range.Crystallization half-time,instead of crystallization peak temperature,was used to describe the self-nucleation behavior,and the self-nucleation domain for the samples crystallized at different temperatures was determined.Due to the competition between homogenous nucleation and self-nuclei,the effect of self-nucleation was less pronounced at high supercooling than that for the sample isothermally crystallized at higher temperature.An efficiency scale to judge the efficiency of nucleating agents from the crystallization half-time was also introduced in this work.

关 键 词：nucleation calorimetry crystallized isothermal kinetics homogenous crystalline succinate heating melting 

分 类 号：O633.14[理学—高分子化学]