Segment Miscibility Variations Dominating Stereocomplex Crystallization in Polymer Blends with Different Initial Chain Conformations

IF 4 2区 化学 Q2 POLYMER SCIENCE
Zi-Xiang Dai, Zi-Yue Gao, Xiao-Kai Ye, Jian-Long Wen, Yong-Qiang Ming, Yi-Jing Nie
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引用次数: 0

Abstract

Understanding the mechanisms that influence the formation of stereocomplex crystals (SCs) in poly(lactic acid) (PLA) is critical for achieving effective regulation of SC content. In the current simulations, we constructed polymer blends with different initial chain conformations and then obtained four groups of polymer blend systems with similar segment miscibility but different chain extension degrees by controlling the high-temperature relaxation time. The simulation results indicate that the fraction of SCs formed in these systems is closely correlated with the average mixing parameters during the crystallization process rather than the initial chain extension degrees. In other words, the average segment miscibility in the crystallization process is the key factor controlling the formation ability of SCs.

不同初始链构象聚合物共混物中支配立体配合物结晶的节段混相变化
了解影响聚乳酸(PLA)中立体络合物晶体(SCs)形成的机制对于实现有效调节SC含量至关重要。在目前的模拟中,我们构建了具有不同初始链构象的聚合物共混体系,通过控制高温弛豫时间,得到了四组具有相似段混相但不同链展度的聚合物共混体系。模拟结果表明,在这些体系中形成的SCs的分数与结晶过程中的平均混合参数密切相关,而不是与初始链延伸程度密切相关。也就是说,晶化过程中平均段相混相是控制SCs形成能力的关键因素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Chinese Journal of Polymer Science
Chinese Journal of Polymer Science 化学-高分子科学
CiteScore
7.10
自引率
11.60%
发文量
218
审稿时长
6.0 months
期刊介绍: Chinese Journal of Polymer Science (CJPS) is a monthly journal published in English and sponsored by the Chinese Chemical Society and the Institute of Chemistry, Chinese Academy of Sciences. CJPS is edited by a distinguished Editorial Board headed by Professor Qi-Feng Zhou and supported by an International Advisory Board in which many famous active polymer scientists all over the world are included. The journal was first published in 1983 under the title Polymer Communications and has the current name since 1985. CJPS is a peer-reviewed journal dedicated to the timely publication of original research ideas and results in the field of polymer science. The issues may carry regular papers, rapid communications and notes as well as feature articles. As a leading polymer journal in China published in English, CJPS reflects the new achievements obtained in various laboratories of China, CJPS also includes papers submitted by scientists of different countries and regions outside of China, reflecting the international nature of the journal.
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