The Relationship between Pendant Phosphate Groups and Mechanical Properties of Polyisoprene Rubber

Shi-Qi Li; Mao-Zhu Tang; Cheng Huang; Rong Zhang; Guang-Su Huang; Yun-Xiang Xu

doi:10.1007/s10118-021-2497-z

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The Relationship between Pendant Phosphate Groups and Mechanical Properties of Polyisoprene Rubber

ARTICLE | Updated：2020-10-13

- The Relationship between Pendant Phosphate Groups and Mechanical Properties of Polyisoprene Rubber
- Chinese Journal of Polymer Science Vol. 39, Issue 4, Pages: 465-473(2021)
- Affiliations：
  
  College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
- Author bio：
  
  guangsuhuang@scu.edu.cn (G.S.H.)
  yxxu@scu.edu.cn (Y.X.X.)
- Funds：
- DOI：10.1007/s10118-021-2497-z
  CLC：
- Received：17 July 2020，
  
  Revised：2020-8-23，
  
  Accepted：27 August 2020，
  
  Online First：13 October 2020，
  
  Published：01 January 2021
- Accepted：
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Li, S. Q.; Tang, M. Z.; Huang, C.; Zhang, R.; Huang, G. S.; Xu, Y. X. The relationship between pendant phosphate groups and mechanical properties of polyisoprene rubber. Chinese J. Polym. Sci. 2021, 39, 465–473

Shi-Qi Li, Mao-Zhu Tang, Cheng Huang, et al. The Relationship between Pendant Phosphate Groups and Mechanical Properties of Polyisoprene Rubber[J]. Chinese Journal of Polymer Science, 2021, 39(4): 465-473.
Li, S. Q.; Tang, M. Z.; Huang, C.; Zhang, R.; Huang, G. S.; Xu, Y. X. The relationship between pendant phosphate groups and mechanical properties of polyisoprene rubber. Chinese J. Polym. Sci. 2021, 39, 465–473 DOI： 10.1007/s10118-021-2497-z.

Shi-Qi Li, Mao-Zhu Tang, Cheng Huang, et al. The Relationship between Pendant Phosphate Groups and Mechanical Properties of Polyisoprene Rubber[J]. Chinese Journal of Polymer Science, 2021, 39(4): 465-473. DOI： 10.1007/s10118-021-2497-z.

摘要

Abstract

It is still a great challenge to mimic the structure and function of natural rubber by introducing polar components into synthetic polyisoprene. In order to explore the function of phosphate groups on the mechanical properties of polyisoprene rubber

a terminally functionalized compound (PIP-P) containing phosphate groups was synthesized and further vulcanized to prepare the model compound V-PIP-P. Through analyzing the test results

it was found that these phosphate groups formed polar aggregates in non-polar polyisoprene rubber matrix

serving as an additional dynamic cross-linking sites

which increases the cross-linking density and improves mechanical properties. The influence of the phosphate groups on the strain-induced crystallization (SIC) was further investigated

via

synchrotron wide-angle X-ray diffraction (WAXD) experiment. These phosphate group aggregates not only reduced the onset strain of SIC

but also slowed down the molecular chain mobility

which hinder the crystal lateral growth. The above results help us to gain a deeper understanding for the function of phosphate groups in the formation of “naturally occurring network” and guide the molecular design of next generation polyisoprene rubber.

关键词

Keywords

references

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