Dual Cross-linked Eucommia Ulmoides Gum with Reprocessibility, Shape Memory Capability and Broadband Sound Absorption at Low Frequency

Qing-Gang Ni; Rui Mi; Biao Ou-Yang; Jian-Hua Wu; Peng Kong; You-Ji Li; Xiao-Chun Peng

doi:10.1007/s10118-025-3384-9

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Dual Cross-linked Eucommia Ulmoides Gum with Reprocessibility, Shape Memory Capability and Broadband Sound Absorption at Low Frequency

RESEARCH ARTICLE | Updated：2025-09-26

- Dual Cross-linked Eucommia Ulmoides Gum with Reprocessibility, Shape Memory Capability and Broadband Sound Absorption at Low Frequency
- Chinese Journal of Polymer Science Vol. 43, Issue 10, Pages: 1875-1884(2025)
- Affiliations：
  
  a.College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
  b.College of Physics and Electromechanical Engineering, Jishou University, Jishou 416000, China
- Author bio：
  
  jianhuawu@jsu.edu.cn (J.H.W.)
  pnfxz@jsu.edu.cn (X.C.P.)
- Funds：
- DOI：10.1007/s10118-025-3384-9
  CLC：
- Received：28 March 2025，
  
  Revised：2025-05-13，
  
  Accepted：18 May 2025，
  
  Online First：22 July 2025，
  
  Published：05 October 2025
- Accepted：
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Ni, Q. G.; Mi, R.; Ou-Yang, B.; Wu, J. H.; Kong, P.; Li, Y. J.; Peng, X. C. Dual cross-linked eucommia ulmoides gum with reprocessibility, shape memory capability and broadband sound absorption at low frequency. Chinese J. Polym. Sci. 2025, 43, 1875–1884

Qing-Gang Ni, Rui Mi, Biao Ou-Yang, et al. Dual Cross-linked Eucommia Ulmoides Gum with Reprocessibility, Shape Memory Capability and Broadband Sound Absorption at Low Frequency[J]. Chinese Journal of Polymer Science, 2025, 43(10): 1875-1884.
Ni, Q. G.; Mi, R.; Ou-Yang, B.; Wu, J. H.; Kong, P.; Li, Y. J.; Peng, X. C. Dual cross-linked eucommia ulmoides gum with reprocessibility, shape memory capability and broadband sound absorption at low frequency. Chinese J. Polym. Sci. 2025, 43, 1875–1884 DOI： 10.1007/s10118-025-3384-9.

Qing-Gang Ni, Rui Mi, Biao Ou-Yang, et al. Dual Cross-linked Eucommia Ulmoides Gum with Reprocessibility, Shape Memory Capability and Broadband Sound Absorption at Low Frequency[J]. Chinese Journal of Polymer Science, 2025, 43(10): 1875-1884. DOI： 10.1007/s10118-025-3384-9.

摘要

with Zn

-imidazole coordination cross-linked structures and polysulfide bonds displayed reprocessability

broadband sound absorption at low frequency

and quick shape memory capability at moderate temperatures. In addition

the use of DBU effectively suppressed C-S bond formation

thereby preserving the dynamic network reconfigurability.

Abstract

An inverse vulcanized polymer

SZIM

combining Zn

-imidaz

ole coordination bonds and polysulfide bonds was synthesized and incorporated into bio-based

Eucommia ulmoides gum

(EUG) to generate

EUG-SZIM-

s. The residual crystallinity of the EUG matrix synergistically interacted with the dual cross-linking networks to establish reversible deformation domains

providing

EUG-SZIM-

s with quick shape memory capability at moderate temperatures. The damping properties were also investigated

and

EUG-SZIM-

s displayed high tan

values (

0.3) when the

SZIM

dosage was higher than 5.5 phr

which showed a positive correlation with

SZIM

concentration. Such good damping performance endowed the

EUG-SZIM-

s with broadband low-frequency sound absorption. In addition

the dual cross-linking networks endowed the materials with reprocessability under different catalytic systems

and the 1

8-diazobicyclic[5.4.0

]

undeca-7-ene (DBU)-catalyzed samples exhibited better mechanical properties than

EUG-SZIM-

关键词

Keywords

references

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