Thermodynamics of strain-induced crystallization of random copolymers

Yijing Nie; Huanhuan Gao; Yixian Wu; Wenbing Hu

doi:10.1039/C3SM52465E

Thermodynamics of strain-induced crystallization of random copolymers†

Yijing Nie,^ab Huanhuan Gao,^a Yixian Wu^c and Wenbing Hu*^a

* Corresponding authors

^a Department of Polymer Science and Engineering, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
E-mail: wbhu@nju.edu.cn

^b School of Materials Science and Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China

^c State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Abstract

Industrial semi-crystalline polymers contain various kinds of sequence defects, which behave like non-crystallizable comonomer units on random copolymers. We performed dynamic Monte Carlo simulations of strain-induced crystallization of random copolymers with various contents of comonomers at high temperatures. We observed that the onset strains of crystallization shift up with the increase of comonomer contents and temperatures. The behaviors can be predicted well by a combination of Flory's theories on the melting-point shifting-down of random copolymers and on the melting-point shifting-up of strain-induced crystallization. Our thermodynamic results are fundamentally important for us to understand the rubber strain-hardening, the plastic molding, the film stretching as well as the fiber spinning.

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DOI: https://doi.org/10.1039/C3SM52465E
Article type: Paper
Submitted: 19 Sep 2013
Accepted: 30 Oct 2013
First published: 31 Oct 2013

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Soft Matter, 2014,10, 343-347

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Thermodynamics of strain-induced crystallization of random copolymers

Y. Nie, H. Gao, Y. Wu and W. Hu, Soft Matter, 2014, 10, 343 DOI: 10.1039/C3SM52465E

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Soft Matter

Thermodynamics of strain-induced crystallization of random copolymers†

Abstract

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Thermodynamics of strain-induced crystallization of random copolymers

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