<italic style="font-style: italic">In Situ</italic> Self-growing of Thermoplastics into Strong and Tough Thermosets Based on Dynamic Imidazole-urea Moiety

Jian-Ye Zhang; Xin-Yu Xu; Qiao Sun; Ling Liu; Zeng-He Liu; Yu-Tian Zhu

doi:10.1007/s10118-025-3289-7

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In Situ Self-growing of Thermoplastics into Strong and Tough Thermosets Based on Dynamic Imidazole-urea Moiety

RESEARCH ARTICLE | Updated：2025-02-25

- In Situ Self-growing of Thermoplastics into Strong and Tough Thermosets Based on Dynamic Imidazole-urea Moiety
- Chinese Journal of Polymer Science Vol. 43, Issue 3, Pages: 488-494(2025)
- Affiliations：
  
  College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
- Author bio：
  
  zengheliu@hznu.edu.cn (Z.H.L.)
  ytzhu@hznu.edu.cn (Y.T.Z.)
- Funds：
- DOI：10.1007/s10118-025-3289-7
  CLC：
- Received：16 December 2024，
  
  Revised：06 January 2025，
  
  Accepted：2025-01-07，
  
  Published Online：18 February 2025，
  
  Published：01 March 2025
- Accepted：
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Zhang, J. Y.; Xu, X. Y.; Sun, Q.; Liu, L.; Liu, Z. H.; Zhu, Y. T. In situ self-growing of thermoplastics into strong and tough thermosets based on dynamic imidazole-urea moiety. Chinese J. Polym. Sci. 2025, 43, 488–494

Jian-Ye Zhang, Xin-Yu Xu, Qiao Sun, et al. In Situ Self-growing of Thermoplastics into Strong and Tough Thermosets Based on Dynamic Imidazole-urea Moiety[J]. Chinese journal of polymer science, 2025, 43(3): 488-494.
Zhang, J. Y.; Xu, X. Y.; Sun, Q.; Liu, L.; Liu, Z. H.; Zhu, Y. T. In situ self-growing of thermoplastics into strong and tough thermosets based on dynamic imidazole-urea moiety. Chinese J. Polym. Sci. 2025, 43, 488–494 DOI： 10.1007/s10118-025-3289-7.

Jian-Ye Zhang, Xin-Yu Xu, Qiao Sun, et al. In Situ Self-growing of Thermoplastics into Strong and Tough Thermosets Based on Dynamic Imidazole-urea Moiety[J]. Chinese journal of polymer science, 2025, 43(3): 488-494. DOI： 10.1007/s10118-025-3289-7.

摘要

Thermosets possess excellent mechanical properties

but are unable to be melt-processed like thermoplastics

which greatly limits their shape designs and applications. Herein

a self-growing strategy based on dynamic imidazole-urea moiety for melt-processing strong and tough thermosets is present.

Abstract

Thermosets are indispensable to our daily life

but their crosslinked structures make them unable to be processed by the melt processing like thermoplastics

which greatly limits their shape designs and applications. Herei

we address this challenge

via

in situ

self-growing strategy

i.e.

utilizing the dynamic imidazole-urea moiety to suck up and integrate epoxy into the materials and making the thermoplastics grow

in situ

into thermosets. With this strategy

thermosets can be readily processed

via

hot-melt extrusion molding

including melt spinning and fused deposition modeling 3D printing. More importantly

this strategy simultaneously integrates the flexibility of polyurethane and the robustness of epoxy resin into the resulting thermosets

yielding a mechanical-reinforcing effect to make the material not only strong but also tough (toughness: 99.3 MJ∙m

−3

tensile strength: 38.8 MPa). Moreover

the crosslinking density and modulus of the as-prepared thermosets (from 34.1 MPa to 613.7 MPa) can be readily tuned on demand by changing the growth index. Furthermore

these thermosets exhibited excellent thermal stability and chemical resistance.

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references

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⁰

In Situ Self-growing of Thermoplastics into Strong and Tough Thermosets Based on Dynamic Imidazole-urea Moiety

DOI：10.1007/s10118-025-3289-7

摘要

Abstract

关键词

Keywords

references