Strong memory of strain-induced copolymer crystallization as revealed by Monte Carlo simulations

被引：22

作者：

Guan, Xinchao ^{[1
]}

Gao, Huanhuan ^{[1
]}

Zha, Liyun ^{[1
]}

Wu, Yixian ^{[2
]}

Hu, Wenbing ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem, Nanjing 210023, Jiangsu, Peoples R China

[2] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

POLYMER | 2016年 / 98卷

基金：

中国国家自然科学基金;

关键词：

Monte Carlo simulation; Strain-induced crystallization; Random copolymer; STATISTICAL COPOLYMERS; CRYSTAL NUCLEATION; POLYMERS; RUBBER; TEMPERATURE; SEGREGATION; MODEL;

D O I：

10.1016/j.polymer.2016.06.040

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We performed dynamic Monte Carlo simulations of strain-induced crystallization of homopolymer and random copolymers under cyclic loading of strains. We found that since the second loading random copolymers shift down the onset strain of crystallization and raise up the crystallinity, in contrast to homopolymer. We attributed the strong memory to the remaining of sequence-length segregation raised by copolymer crystallization during the first loading of strains. The mechanism is consistent with that for the strong memory of copolymer crystallization under cyclic cooling, as revealed by previous experiments and simulations. Our results showed a new effect of chain-sequence defects on the cyclic loading performance of rubbers. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：282 / 286

页数：5

共 21 条

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