A Unified Thermodynamic Model of Flow-induced Crystallization of Polymer

Cui Nie; Fan Peng; Ting-Yu Xu; Jun-Fang Sheng; Wei Chen; Liang-Bin Li

doi:10.1007/s10118-021-2622-z

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A Unified Thermodynamic Model of Flow-induced Crystallization of Polymer

ARTICLE | Updated：2021-08-03

- A Unified Thermodynamic Model of Flow-induced Crystallization of Polymer
- Chinese Journal of Polymer Science Vol. 39, Issue 11, Pages: 1489-1495(2021)
- Affiliations：
  
  National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
- Author bio：
  
  jfsheng@ustc.edu.cn (J.F.S.)
  lbli@ustc.edu.cn (L.B.L.)
- Funds：
- DOI：10.1007/s10118-021-2622-z
  CLC：
- Received：07 May 2021，
  
  Revised：2021-6-18，
  
  Accepted：21 June 2021，
  
  Online First：03 August 2021，
  
  Published：18 September 2021
- Accepted：
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Nie, C.; Peng, F.; Xu, T. Y.; Sheng, J. F.; Chen, W.; Li, L. B. A unified thermodynamic model of flow-induced crystallization of polymer. Chinese J. Polym. Sci. 2021, 39, 1489–1495

Cui Nie, Fan Peng, Ting-Yu Xu, et al. A Unified Thermodynamic Model of Flow-induced Crystallization of Polymer[J]. Chinese Journal of Polymer Science, 2021, 39(11): 1489-1495.
Nie, C.; Peng, F.; Xu, T. Y.; Sheng, J. F.; Chen, W.; Li, L. B. A unified thermodynamic model of flow-induced crystallization of polymer. Chinese J. Polym. Sci. 2021, 39, 1489–1495 DOI： 10.1007/s10118-021-2622-z.

Cui Nie, Fan Peng, Ting-Yu Xu, et al. A Unified Thermodynamic Model of Flow-induced Crystallization of Polymer[J]. Chinese Journal of Polymer Science, 2021, 39(11): 1489-1495. DOI： 10.1007/s10118-021-2622-z.

摘要

Abstract

We propose a unified thermodynamic model of flow-induced crystallization of polymer (uFIC)

which incorporates not only the conformational entropy reduction but also the contributions of flow-induced chain orientation

the interaction of ordered segments

and the free energy of crystal nucleus and crystal morphology. Specifically

it clarifies the determining parameters of the critical crystal nucleus size

and is able to account for the acceleration of nucleation

the emergence of precursor

different crystal morphologies and structures induced by flow. Based on the nucleation barrier under flow

we analyze at which condition precursor may occur and how flow affects the competition among different crystal forms such as orthorhombic and hexagonal phases of polyethylene. According to the uFIC model

the different crystal morphologies and structures in the flow-temperature space have been clarified

which give a good agreement with experiments of FIC.

关键词

Keywords

references

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