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Impact of the architecture on the crystallization kinetics of poly(ε-caprolactone)/poly(trimethylene carbonate) block copolymers
European Polymer Journal ( IF 6 ) Pub Date : 2017-10-01 , DOI: 10.1016/j.eurpolymj.2017.05.045
R. Veronica Castillo , Guillaume Fleury , Christophe Navarro , Aline Couffin , Didier Bourissou , Blanca Martín-Vaca

Abstract Well defined block copolymer architectures based on poly(e-caprolactone) and poly(trimethylene carbonate) were prepared thanks to the methane sulfonic acid (MSA) organocatalyzed ROP of the corresponding monomers. The interplay between the crystallization kinetics, self-assembling behavior and superstructural morphology was investigated. In order to probe the influence of the block copolymer architecture (molecular weight, number of blocks and sequence), kinetics theories of polymer crystallization were applied to the isothermal crystallization kinetics data obtained by differential scanning calorimetry and polarized optical microscopy. The results suggest that the PCL crystallization kinetic is only slightly disturbed by the segregation strength for weakly segregated systems while the block copolymer sequence shows a strong impact on the overall crystallization kinetics, and particularly on the nucleation step due to topological constraints.

中文翻译:

结构对聚(ε-己内酯)/聚(三亚甲基碳酸酯)嵌段共聚物结晶动力学的影响

摘要 由于相应单体的甲磺酸 (MSA) 有机催化 ROP,制备了基于聚(ε-己内酯)和聚(碳酸三亚甲基酯)的明确定义的嵌段共聚物结构。研究了结晶动力学、自组装行为和超结构形态之间的相互作用。为了探究嵌段共聚物结构(分子量、嵌段数和序列)的影响,将聚合物结晶动力学理论应用于通过差示扫描量热法和偏光显微镜获得的等温结晶动力学数据。
更新日期:2017-10-01
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