Effect of Phase Separation Size on the Properties of Self-healing Elastomer

Jun Xu; Lei Zhu; Xian-Qi Feng; Cong Sui; Wen-Peng Zhao; Shou-Ke Yan

doi:10.1007/s10118-024-3097-5

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Effect of Phase Separation Size on the Properties of Self-healing Elastomer

RESEARCH ARTICLE | Updated：2024-03-07

- Effect of Phase Separation Size on the Properties of Self-healing Elastomer
- Chinese Journal of Polymer Science Vol. 42, Pages: 1-7(2024)
- Affiliations：
  
  a.School of Chemical Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
  b.College of Engineering, Yanching institute of Technology, Langfang 065210, China
  c.Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao 266042, China
  d.State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Author bio：
  
  zhwp@qust.edu.cn (W.P.Z.)
  skyan@mail.buct.edu.cn (S.K.Y.)
- Funds：
- DOI：10.1007/s10118-024-3097-5
  CLC：
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Xu, J.; Zhu, L.; Feng, X. Q.; Sui, C.; Zhao, W. P.; Yan, S. K. Effect of phase separation size on the properties of self-healing elastomer. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-024-3097-5

Jun Xu, Lei Zhu, Xian-Qi Feng, et al. Effect of Phase Separation Size on the Properties of Self-healing Elastomer. [J/OL]. Chinese Journal of Polymer Science 421-7(2024)
Xu, J.; Zhu, L.; Feng, X. Q.; Sui, C.; Zhao, W. P.; Yan, S. K. Effect of phase separation size on the properties of self-healing elastomer. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-024-3097-5 DOI：

Jun Xu, Lei Zhu, Xian-Qi Feng, et al. Effect of Phase Separation Size on the Properties of Self-healing Elastomer. [J/OL]. Chinese Journal of Polymer Science 421-7(2024) DOI： 10.1007/s10118-024-3097-5.

摘要

Abstract

Regulation of phase structure has been recognized as one of the most effective ways to fabricate self-healing polymers with high mechanical strength. The mechanical properties of the resultant polymers are certainly affected by the size of separated phase domain. However

the study on this aspect is absence

because it can hardly exclude the influence of variation in monomer proportion required for tuning the separated phase size. Here

we report the first study on tuning the phase size through reversible addition-fragmentation chain transfer (RAFT) polymerization without changing the proportion of monomers. As expected

the size of separated phase has been successfully mediated from 15 nm to 9 nm by tuning the molecular weight of the chain transfer agent. It is found that the mechanical strength and the self-healing efficiency of the resultant polymers increase simultaneously with the decrease of phase size. The study on the formation kinetics of hydrogen bonds reveals that the decrease of phase size can facilitate the re-bonding rate of hydrogen bonds

even if the migration of polymer chains is restricted.

关键词

Keywords

Self-healing polymersPhase separationReversible addition-fragmentation chain transfer

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