Design of Weldable and Recyclable Fluorine-containing Adhesives Utilizing Dynamic-covalent Boroxine Bonds

Hou-Li Zhang; Yu-Quan Sun; Yao Xu; Lu Wang; Ying Li; Jie Zhang; Bing Geng; Shu-Sheng Li; Chuan-Yong Zong

doi:10.1007/s10118-025-3347-1

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Design of Weldable and Recyclable Fluorine-containing Adhesives Utilizing Dynamic-covalent Boroxine Bonds

RESEARCH ARTICLE | Updated：2025-07-26

- Design of Weldable and Recyclable Fluorine-containing Adhesives Utilizing Dynamic-covalent Boroxine Bonds
- Chinese Journal of Polymer Science Vol. 43, Issue 8, Pages: 1433-1442(2025)
- Affiliations：
  
  a.School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan 250022, China
  b.Shandong Institute for Product Quality Inspection, Jinan 250102, China
  c.National Key Laboratory of Aerospace Chemical Power, Hubei Institute of Aerospace Chemotechnology, Xiangyang 441003, China
  d.School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
- Author bio：
  
  chm_wangl@ujn.edu.cn (L.W.)
  chm_zongcy@ujn.edu.cn (C.Y.Z.)
- Funds：
- DOI：10.1007/s10118-025-3347-1
  CLC：
- Received：09 February 2025，
  
  Revised：25 March 2025，
  
  Accepted：31 March 2025，
  
  Published Online：20 May 2025，
  
  Published：01 August 2025
- Accepted：
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Zhang, H. L.; Sun, Y. Q.; Xu, Y.; Wang, L.; Li, Y.; Zhang, J.; Geng, B.; Li, S. S.; Zong, C. Y. Design of weldable and recyclable fluorine-containing adhesives utilizing dynamic-covalent boroxine bonds. Chinese J. Polym. Sci. 2025, 43, 1433–1442

Hou-Li Zhang, Yu-Quan Sun, Yao Xu, et al. Design of Weldable and Recyclable Fluorine-containing Adhesives Utilizing Dynamic-covalent Boroxine Bonds[J]. Chinese journal of polymer science, 2025, 43(8): 1433-1442.
Zhang, H. L.; Sun, Y. Q.; Xu, Y.; Wang, L.; Li, Y.; Zhang, J.; Geng, B.; Li, S. S.; Zong, C. Y. Design of weldable and recyclable fluorine-containing adhesives utilizing dynamic-covalent boroxine bonds. Chinese J. Polym. Sci. 2025, 43, 1433–1442 DOI： 10.1007/s10118-025-3347-1.

Hou-Li Zhang, Yu-Quan Sun, Yao Xu, et al. Design of Weldable and Recyclable Fluorine-containing Adhesives Utilizing Dynamic-covalent Boroxine Bonds[J]. Chinese journal of polymer science, 2025, 43(8): 1433-1442. DOI： 10.1007/s10118-025-3347-1.

摘要

High-strength

recyclable fluorine-containing adhesives were developed

integrating dynamic B-O bonds and multilevel intermolecular interactions. These adhesives exhibit solvent-assisted self-healing and ethanol-triggered recyclability

enabling multiple reuse cycles without substrate damage while maintaining robust adhesion across diverse materials.

Abstract

The advancement of functional adhesives featuring recyclable and repairable properties is of great significance in interfacial science and engineering. Herein

a series of high-strength

recyclable fluorine-containing adhesives (ESO

-FPF) were designed and synthesized by crosslinking two prepolymers

FPF-B (derived from side-chain fluorinated diol

isocyanate

and aminoboric acid) and ESO-B (synthesized from bio-based epoxy soybean oil and aminoboric acid)

through dynamic boro-oxygen bonds. The resulting adhesive exhibited an optimal tensile strength of 42 MPa and the shear strength on steel plates reached as high as 3.89 MPa. More importantly

benefiting from the dynamic reversibility of the boron-oxygen bonds along with the hydrogen bonds interaction

ESO

-FPF can be welded with the assistance of solvents and recycled for multiple cycles. The outstanding healing efficiency and excellent reprocessability of these functional adhesives were confirmed by mechanical

testing. Moreover

the as-prepared adhesives demonstrated universal and remarkable adhesion to various substrates

such as aromatic polyamide

aluminum plates and polycarbonate

meanwhile

they could be easily disassembled and recycled using ethanol without damaging the substrates surface. This study not only provides a simple strategy for the synthesis of eco-friendly adhesives with weldable and recyclable properties

but also sheds light on the development of other functional materials utilizing dynamic covalent chemistry.

关键词

Keywords

references

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