Poly(hydroxy urethane-siloxane) Pressure-sensitive Adhesive: Synthesis, Characterization and Its Usage for Skin-contact Sensors

Chao Xie; Ling-Yi Li; Shu-Sheng Li; Chuan-Yong Zong; Xu-Bao Jiang; Xiao-Li Zhu; Sheng-Yu Feng; Xiang-Zheng Kong

doi:10.1007/s10118-025-3503-7

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Poly(hydroxy urethane-siloxane) Pressure-sensitive Adhesive: Synthesis, Characterization and Its Usage for Skin-contact Sensors

RESEARCH ARTICLE | Updated：2026-01-30

- Poly(hydroxy urethane-siloxane) Pressure-sensitive Adhesive: Synthesis, Characterization and Its Usage for Skin-contact Sensors
- Chinese Journal of Polymer Science Vol. 44, Issue 2, Pages: 536-548(2026)
- Affiliations：
  
  a.College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
  b.School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
  c.National Engineering Research Center for Colloidal Materials & Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
- Author bio：
  
  chm_liss@ujn.edu.cn (S.S.L.)
  chm_zhuxl@ujn.edu.cn (X.L.Z.)
- Funds：
- DOI：10.1007/s10118-025-3503-7
  CLC：
- Received：27 September 2025，
  
  Accepted：13 November 2025，
  
  Online First：22 January 2026，
  
  Published：05 February 2026
- Accepted：
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Xie, C.; Li, L. Y.; Li, S. S.; Zong, C. Y.; Jiang, X. B.; Zhu, X. L.; Feng, S. Y.; Kong, X. Z. Poly(hydroxy urethane-siloxane) pressure-sensitive adhesive: synthesis, characterization and its usage for skin-contact sensors. Chinese J. Polym. Sci. 2026, 44, 536–548

Chao Xie, Ling-Yi Li, Shu-Sheng Li, et al. Poly(hydroxy urethane-siloxane) Pressure-sensitive Adhesive: Synthesis, Characterization and Its Usage for Skin-contact Sensors[J]. Chinese Journal of Polymer Science, 2026, 44(2): 536-548.
Xie, C.; Li, L. Y.; Li, S. S.; Zong, C. Y.; Jiang, X. B.; Zhu, X. L.; Feng, S. Y.; Kong, X. Z. Poly(hydroxy urethane-siloxane) pressure-sensitive adhesive: synthesis, characterization and its usage for skin-contact sensors. Chinese J. Polym. Sci. 2026, 44, 536–548 DOI： 10.1007/s10118-025-3503-7.

Chao Xie, Ling-Yi Li, Shu-Sheng Li, et al. Poly(hydroxy urethane-siloxane) Pressure-sensitive Adhesive: Synthesis, Characterization and Its Usage for Skin-contact Sensors[J]. Chinese Journal of Polymer Science, 2026, 44(2): 536-548. DOI： 10.1007/s10118-025-3503-7.

摘要

Poly(hydroxy urethane-siloxane) pressure-sensitive adhesives (PHUSi) were synthesized through the reaction of cyclic carbonate-functionalized polysiloxanes with diamines. PHUSi exhibits high biocompatible and adhesive performance

suitable for medical applications

such as flexible electrocardiogram devices.

Abstract

Silicone-based pressure-sensitive adhesives (Si-PSAs) are valued for their thermal stability

flexibility

and biocompatibility

but their weak bonding strength restricts high-performance use. Polyurethane-modified Si-PSAs enhance adhesion

however diisocyanates remain essential. The raw materials of isocyanates are toxic

and their synthesis involves phosgene. To make up for those shortcomings

a series of poly(hydroxy urethane-siloxane) PSAs

named as PHUSi here

were synthesized through the ring-opening reaction of cyclic carbonate-functionalized polysiloxanes (PSi

-VEC

) with various aliphatic diamines. The PSi

-VEC

precursors were prepared

via

the hydrosilylation of hydrogen-containing polysiloxanes (PSi

-H

) with 4-vinyl-1

3-dioxolan-2-one (VEC). The chemical structures of PSi

-H

PSi

-VEC

and PHUSi were characterized

and bonding properties of PHUSi were systematically evaluated. The influence of architectures on adhesive performance was elucidated through comprehensive analyses

including rheology

crosslink density assessment

and so on. These studies revealed that the tailored design of PHUSi adhesives combine the advantages of traditional Si-PSAs

with enhanced adhesion while eliminating isocyanate toxicity. The optimized PHUSi formulation achieved remarkable 180° peel strength (76.5 N/m on skin) and maximum probe tack force (1.61 N)

enabling secure 24 h attachment of flexible sensors to skin. These properties make PHUSi particularly suitable for medical applications

as demonstrated by successful implementation in flexible electrocardiogram devices

offering a biocompatible

high-performance adhesive.

关键词

Keywords

references

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