A Robust Self-healing Polyurethane Elastomer Enabled by Tuning the Molecular Mobility and Phase Morphology through Disulfide Bonds

Hai-Tao Wu; Bi-Qiang Jin; Hao Wang; Wen-Qiang Wu; Zhen-Xing Cao; Zhao-Yang Yuan; Yue Huang; Wei-Hang Li; Guang-Su Huang; Lu-Sheng Liao; Jin-Rong Wu

doi:10.1007/s10118-021-2607-y

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A Robust Self-healing Polyurethane Elastomer Enabled by Tuning the Molecular Mobility and Phase Morphology through Disulfide Bonds

ARTICLE | Updated：2021-07-29

- A Robust Self-healing Polyurethane Elastomer Enabled by Tuning the Molecular Mobility and Phase Morphology through Disulfide Bonds
- Chinese Journal of Polymer Science Vol. 39, Issue 10, Pages: 1299-1309(2021)
- Affiliations：
  
  a.State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineerng, Sichuan University, Chengdu 610065, China
  b.Guangdong Provincial Key Laboratory of Natural Rubber Processing, Agricultural Products Processing Research Institute of Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, China
- Author bio：
  
  276491692@qq.com (L.S.L.)
  wujinrong@scu.edu.cn (J.R.W.)
- Funds：
- DOI：10.1007/s10118-021-2607-y
  CLC：
- Received：03 April 2021，
  
  Revised：2021-5-13，
  
  Accepted：15 May 2021，
  
  Online First：29 July 2021，
  
  Published：20 August 2021
- Accepted：
Scan QR Code
Wu, H. T.; Jin, B. Q.; Wang, H.; Wu, W. Q.; Cao, Z. X.; Yuan, Z. Y.; Huang, Y.; Li, W. H.; Huang, G. S.; Liao, L. S.; Wu, J. R. A robust self-healing polyurethane elastomer enabled by tuning the molecular mobility and phase morphology through disulfide bonds. Chinese J. Polym. Sci. 2021, 39, 1299–1309

Hai-Tao Wu, Bi-Qiang Jin, Hao Wang, et al. A Robust Self-healing Polyurethane Elastomer Enabled by Tuning the Molecular Mobility and Phase Morphology through Disulfide Bonds[J]. Chinese Journal of Polymer Science, 2021, 39(10): 1299-1309.
Wu, H. T.; Jin, B. Q.; Wang, H.; Wu, W. Q.; Cao, Z. X.; Yuan, Z. Y.; Huang, Y.; Li, W. H.; Huang, G. S.; Liao, L. S.; Wu, J. R. A robust self-healing polyurethane elastomer enabled by tuning the molecular mobility and phase morphology through disulfide bonds. Chinese J. Polym. Sci. 2021, 39, 1299–1309 DOI： 10.1007/s10118-021-2607-y.

Hai-Tao Wu, Bi-Qiang Jin, Hao Wang, et al. A Robust Self-healing Polyurethane Elastomer Enabled by Tuning the Molecular Mobility and Phase Morphology through Disulfide Bonds[J]. Chinese Journal of Polymer Science, 2021, 39(10): 1299-1309. DOI： 10.1007/s10118-021-2607-y.

摘要

Abstract

Elastomers with outstanding strength

toughness and healing efficiency are highly promising for many emerging fields. However

it is still a challenge to integrate all these beneficial features in one elastomer. Herein

an asymmetric alicyclic structure adjacent to aromatic disulfide was tactfully introduced into the backbone of polyurethane (PU) elastomer. Speciﬁcally

such elastomer (PU-HPS) was fabricated by polycondensing polytetramethylene ether glycol (PTMEG)

isophorone diisocyanate (IPDI) and

-hydroxydiphenyl disulfide (HPS)

via

one-pot method. The molecular mobility and phase morphology of PU-HPS can be tuned by adjusting the HPS content. Consequently

the dynamic exchange of hydrogen and disulfide bonds in the hard segment domains can also be tailored. The optimized sample manifests outstanding tensile strength (46.4 MPa)

high toughness (109.1 MJ/m

)

high self-healing efficiency after fracture (90.3%)

complete scratch recovery (100%) and good puncture resistance. Therefore

this work provides a facile strategy for developing robust self-healing polymers.

关键词

Keywords

references

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