Chlorosulfonated Poly(propylene carbonate) as High-performance Hot-melt Adhesives: Balancing Interfacial Adhesion and Cohesive Strength through Molecular Weight Window Engineering

Hai-Long Tian; Meng-Yu Yang; Hai-Ying Tan; Jing Jin; Yun-Bao Gao; Wei Jiang

doi:10.1007/s10118-026-3863-7

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Chlorosulfonated Poly(propylene carbonate) as High-performance Hot-melt Adhesives: Balancing Interfacial Adhesion and Cohesive Strength through Molecular Weight Window Engineering

RESEARCH ARTICLE | Updated：2026-11-09

- Chlorosulfonated Poly(propylene carbonate) as High-performance Hot-melt Adhesives: Balancing Interfacial Adhesion and Cohesive Strength through Molecular Weight Window Engineering
- Chinese Journal of Polymer Science Vol. 44, Pages: 1-14(2026)
- Affiliations：
  
  State Key Laboratory of New Textile Materials and Advanced Processing Technologies and Key Laboratory of Textile Fiber and Products of Ministry of Education, College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
- Author bio：
  
  jjin@wtu.edu.cn (J.J.)
  ybgao@wtu.edu.cn (Y.B.G.)
  weijiang@wtu.edu.cn (W.J.)
- Funds：
- DOI：10.1007/s10118-026-3863-7
  CLC：
- Received：22 July 2026，
  
  Accepted：25 August 2026，
  
  Online First：09 November 2026，
  
  Published：2026-10
- Accepted：
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Tian, H. L.; Yang, M. Y.; Tan, H. Y.; Jin, J.; Gao, Y. B.; Jiang, W. Chlorosulfonated poly(propylene carbonate) as high-performance hot-melt adhesives: balancing interfacial adhesion and cohesive strength through molecular weight window engineering. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3863-7

Hai-Long Tian, Meng-Yu Yang, Hai-Ying Tan, et al. Chlorosulfonated Poly(propylene carbonate) as High-performance Hot-melt Adhesives: Balancing Interfacial Adhesion and Cohesive Strength through Molecular Weight Window Engineering[J/OL]. Chinese Journal of Polymer Science, 2026, 441-14.
Tian, H. L.; Yang, M. Y.; Tan, H. Y.; Jin, J.; Gao, Y. B.; Jiang, W. Chlorosulfonated poly(propylene carbonate) as high-performance hot-melt adhesives: balancing interfacial adhesion and cohesive strength through molecular weight window engineering. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3863-7 DOI：

Hai-Long Tian, Meng-Yu Yang, Hai-Ying Tan, et al. Chlorosulfonated Poly(propylene carbonate) as High-performance Hot-melt Adhesives: Balancing Interfacial Adhesion and Cohesive Strength through Molecular Weight Window Engineering[J/OL]. Chinese Journal of Polymer Science, 2026, 441-14. DOI： 10.1007/s10118-026-3863-7.

摘要

Abstract

The concurrent realization of high adhesion strength

biodegradability

and solvent-free processing in hot-melt adhesives (HMAs) is a persistent material design challenge. This study reports a gas-solid phase chlorosulfonation of poly(propylene carbonate) (PPC) with sulfuryl chloride

which installs polar functional groups while inducing controlled main-chain degradation

yielding chlorosulfonated PPC (CSPPC) with precisely tunable molecular we

ights. This dual chemical modification synergistically enhanced both interfacial adhesion and cohesive strength. The optimized CSPPC-35 (

$$ \overline{{M}_{\text{n}}} $$

http://notExist.jpg

=35 kg/mol) achieves a single lap shear adhesion of 6.35 MPa on stainless steel

a peel strength of 131 N/cm

and durable adhesion of 99 h

exhibiting a transition from interfacial to cohesive failure attributed to a balanced viscoelastic state (

G′

≈

G″

≈10

Pa). Subsequent chain extension with poly(butylene adipate-

-terephthalate) (PBAT)/4

4′-diphenylmethane diisocyanate (MDI) further elevates the adhesion strength to 14.23 MPa. Systematic rheological studies revealed that a narrow molecular weight window (30–35 kg/mol) of CSPPC is essential for balancing elastic recovery and viscous dissipation. This study circumvents the conventional HMA paradigm reliant on small-molecule polymerization by leveraging chlorosulfonation as a dual-functional post-polymerization modification of CO

-derived PPC

concurrently introducing polar functionalities and inducing controlled main-chain scission to enable simultaneous polarity enhancement and molecular weight tuning. This strategy establishes the CSPPC as a scalable platform for sustainable

high-performance CO

-derived HMAs.

关键词

Keywords

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