Isothermal Crystallization Kinetics and Melting Behavior of a Luminescent Conjugated Polymer, Poly(9,9-Dihexylfluorene-Alt-2,5-Didodecyloxybenzene)

文献类型： 外文期刊

第一作者： Chen, Xiao-Lei

作者： Chen, Xiao-Lei;Huang, Hong-Liang;Shi, Jian-Gao;Liu, Yong-Li;Wang, Lu-Min

作者机构：

关键词： activation energy;conjugated polymer;isothermal crystallization;luminescent polymer;multiple melting

期刊名称：JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS （ 影响因子：1.504； 五年影响因子：1.388 ）

ISSN： 0022-2348

年卷期： 2012 年 51 卷 6 期

页码：

收录情况： SCI

摘要： A study of the isothermal crystallization behaviors of poly(9,9-dihexylfluorene-alt-2,5-didodecyloxybenzene) (PF6OC12) was carried out using differential scanning calorimetry (DSC). The crystallization kinetics under isothermal conditions could be described by the Avrami equation. The Avrami exponent n ranges from 3.43 to 3.71 for PF6OC12 at crystallization temperatures between 100.0 degrees C and 90.0 degrees C, indicating a three-dimensional spherical crystal growth with homogeneous nucleation in the primary crystallization stage for the isothermal melt crystallization process. In the DSC scan, after the isothermal crystallization, multiple melting behavior was found. The multiple endotherms could be attributed to melting of recrystallized materials produced originally during different crystallization processes. According to the Arrhenius equation, the activation energy was determined to be 211.29 kJmol(-1) for the isothermal melt crystallization of PF6OC12.

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