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
- Dual Cross-linked Eucommia Ulmoides Gum with Reprocessibility, Shape Memory Capability and Broadband Sound Absorption at Low Frequency
- 高分子科学（英文） 2025年43卷第10期页码：1875-1884
- 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：
  
  This work was financially supported by the Natural Science Foundation of Hunan Province (No. 2024JJ7392), the National Natural Science Foundation of China (No. 52463002), Educational Commission of Hunan Province (No. 22A0383), and Special Funds for Construction of Innovative Provinces in Hunan Province (No. 2020SK2028).;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-025-3384-9.
- DOI：10.1007/s10118-025-3384-9
  中图分类号：
- 收稿：2025-03-28，
  
  修回：2025-05-13，
  
  录用：2025-05-18，
  
  网络首发：2025-07-22，
  
  纸质出版：2025-10-05
- 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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