A Constitutive Model Describing Molecular Configuration Evolution and Transient Rheological Behavior of Entangled Polymer Solutions

Wen-Jie Yu; Guan-Cheng Shen; Xiao-Wei Zhou; Mao-Yuan Li; Yun Zhang; Hua-Min Zhou; De-Qun Li

doi:10.1007/s10118-021-2606-z

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A Constitutive Model Describing Molecular Configuration Evolution and Transient Rheological Behavior of Entangled Polymer Solutions

ARTICLE | Updated：2021-07-23

- A Constitutive Model Describing Molecular Configuration Evolution and Transient Rheological Behavior of Entangled Polymer Solutions
- Chinese Journal of Polymer Science Vol. 39, Issue 12, Pages: 1680-1694(2021)
- Affiliations：
  
  State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Author bio：
  
  limaoyuan@hust.edu.cn (M.Y.L.)
  marblezy@hust.edu.cn (Y.Z.)
- Funds：
- DOI：10.1007/s10118-021-2606-z
  CLC：
- Received：25 April 2021，
  
  Revised：2021-5-7，
  
  Accepted：11 May 2021，
  
  Online First：23 July 2021，
  
  Published：18 October 2021
- Accepted：
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Yu, W. J.; Shen, G. C.; Zhou, X. W.; Li, M. Y.; Zhang, Y.; Zhou, H. M.; Li, D. Q. A constitutive model describing molecular configuration evolution and transient rheological behavior of entangled polymer solutions. Chinese J. Polym. Sci. 2021, 39, 1680–1694

Wen-Jie Yu, Guan-Cheng Shen, Xiao-Wei Zhou, et al. A Constitutive Model Describing Molecular Configuration Evolution and Transient Rheological Behavior of Entangled Polymer Solutions[J]. Chinese Journal of Polymer Science, 2021, 39(12): 1680-1694.
Yu, W. J.; Shen, G. C.; Zhou, X. W.; Li, M. Y.; Zhang, Y.; Zhou, H. M.; Li, D. Q. A constitutive model describing molecular configuration evolution and transient rheological behavior of entangled polymer solutions. Chinese J. Polym. Sci. 2021, 39, 1680–1694 DOI： 10.1007/s10118-021-2606-z.

Wen-Jie Yu, Guan-Cheng Shen, Xiao-Wei Zhou, et al. A Constitutive Model Describing Molecular Configuration Evolution and Transient Rheological Behavior of Entangled Polymer Solutions[J]. Chinese Journal of Polymer Science, 2021, 39(12): 1680-1694. DOI： 10.1007/s10118-021-2606-z.

摘要

Abstract

Entanglement network is an important structural feature in concentrated polymer solutions and polymer melts

which has a great influence on the transient rheological behavior and molecular configuration evolution. However

the existing constitutive models have limitations in describing the influence of dynamic entanglement behavior on molecular chain motion

resulting in inaccurate descriptions of the transient rheological behavior. Thus

a molecular configuration evolution model for polymer solutions considering the dynamic entanglement effect is proposed by introducing an intermolecular force that changes with the orientation of the molecular chain in this work. The intermolecular force is introduced by considering the friction coefficient as anisotropic

and the orientation effect is considered by introducing an excluded volume dependent anisotropic diffusion. The proposed model can better describe the stress relaxation

stress growth

and dielectric anisotropy of polymer solutions compared with the anisotropy FENE model and FENE model. In addition

the influence of different model parameters on the transient and steady shear response of polymer solution is investigated

and the results show that the influence of volume loss on the friction anisotropy factor

increases as the solution concentration increases.

关键词

Keywords

references

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