Simultaneous Enhancement of Self-healing and Mechanical Properties in Bio-based Polyurethane <italic style="font-style: italic">via</italic> Asymmetric Hydrogen Bonds

Jun-jie Wang; An-qi Ye; Hua-gao Fang; Xiao-yu Dong; Yuan-qing Zhang; Yong Zhang; Zhi Liu; Yun-sheng Ding

doi:10.11777/j.issn1000-3304.2025.25136

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Simultaneous Enhancement of Self-healing and Mechanical Properties in Bio-based Polyurethane via Asymmetric Hydrogen Bonds

Research Article | 更新时间：2025-10-29

- Simultaneous Enhancement of Self-healing and Mechanical Properties in Bio-based Polyurethane via Asymmetric Hydrogen Bonds
- Acta Polymerica Sinica Vol. 56, Issue 11, Pages: 1987-1996(2025)
- 作者机构：
  
  1.合肥工业大学，化学与化工学院高分子材料与工程系，北京 102200
  2.(合肥工业大学，先进功能材料与器件安徽省重点实验室合肥 230009) (，北京 102200)
  3.合肥工业大学，北京铁科首钢轨道技术股份有限公司，北京 102200
- 作者简介：
  
  Yun-sheng Ding, E-mail: dingys@hfut.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25136
  CLC：
- CSTR：32057.14.GFZXB.2025.7444
- Received：20 June 2025，
  
  Accepted：17 July 2025，
  
  Published Online：26 September 2025，
  
  Published：20 November 2025
- 稿件说明：
移动端阅览
王俊杰, 叶安淇, 方华高, 董晓宇, 张远庆, 张勇, 刘志, 丁运生. 非对称氢键同时提升生物基聚氨酯自修复与力学性能. 高分子学报, 2025, 56(11), 1987-1996

Wang, J. J.; Ye, A. Q.; Fang, H. G.; Dong, X. Y.; Zhang, Y. Q.; Zhang, Y.; Liu, Z.; Ding, Y. S. Simultaneous enhancement of self-healing and mechanical properties in bio-based polyurethane via asymmetric hydrogen bonds. Acta Polymerica Sinica, 2025, 56(11), 1987-1996
王俊杰, 叶安淇, 方华高, 董晓宇, 张远庆, 张勇, 刘志, 丁运生. 非对称氢键同时提升生物基聚氨酯自修复与力学性能. 高分子学报, 2025, 56(11), 1987-1996 DOI： 10.11777/j.issn1000-3304.2025.25136. CSTR： 32057.14.GFZXB.2025.7444.

Wang, J. J.; Ye, A. Q.; Fang, H. G.; Dong, X. Y.; Zhang, Y. Q.; Zhang, Y.; Liu, Z.; Ding, Y. S. Simultaneous enhancement of self-healing and mechanical properties in bio-based polyurethane via asymmetric hydrogen bonds. Acta Polymerica Sinica, 2025, 56(11), 1987-1996 DOI： 10.11777/j.issn1000-3304.2025.25136. CSTR： 32057.14.GFZXB.2025.7444.

摘要

以生物基聚碳酸酯二元醇(PCDL)、生物基赖氨酸二异氰酸酯(LDI)和异佛尔酮二异氰酸酯(IPDI)为主要原料，异佛尔酮二胺(IPDA)与双(2-羟基乙基)二硫醚(HEDS)为扩链剂制备了高强度可自修复的生物基聚氨酯. 研究表明，与PCDL-I-AH (PCDL-IPDI-IPDA/HEDS)相比，生物基聚氨酯中非对称氢键减少了其多重相分离结构间的差异，改善了PCDL-IL-AH (PCDL-IPDI/LDI-IPDA/HEDS)的力学性能；同时，非对称氢键还促进了生物基聚氨酯中动态共价键自修复能力的提升；其中，PCDL-IL-AH-7样品室温下的拉伸强度和断裂伸长率分别为45.22 MPa和1021%，断裂强度和断裂能分别为207.64 MJ/m

和182.78 kJ/cm

，呈现出强而韧的特性；其样品表面宽约100 μm的划痕，在80 ℃，空气氛围中放置2 h后完全愈合，表现出优良的自修复能力；研究工作为高强高韧和高自修复效率生物基聚氨酯材料设计合成提供了新方法.

Abstract

High-strength self-healing bio-based polyurethanes was synthesized using bio-based polycarbonate diol (PCDL)

bio-based lysine diisocyanate (LDI) and isophorone diisocyanate (IPDI) as primary raw materials

with isophorone diamine (IPDA) and bis(2-hydroxyethyl) disulfide (HEDS) as chain extenders. The results demonstrated that

compared with PCDL-I-AH (PCDL-IPDI-IPDA/HEDS)

the asymmetric hydrogen bonding in the bio-based polyurethanes reduced the disparities between their multiple phase-separated structures

thereby enhanced t

he mechanical properties of PCDL-IL-AH (PCDL-IPDI/LDI-IPDA/HEDS). Simultaneously

the asymmetric hydrogen bonds further enhanced the self-healing capability of the bio-based polyurethane through dynamic covalent bonds. The tensile strength and elongation at break of the PCDL-IL-AH-7 samples at room temperature were 45.22 MPa and 1021%

respectively

alongside a fracture strength of 207.64 MJ/m

and a fracture energy of 182.78 kJ/cm

demonstrating strong and tough characteristics. Furthermore

the scratches approximately 100 µm wide on the surface of sample completely healed after 2 h at 80 ℃ in air

indicating an exceptional self-healing efficiency. This study provides a novel strategy for the designation and synthesis of bio-based polyurethane materials with high strength

toughness

and self-healing efficiency.

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Simultaneous Enhancement of Self-healing and Mechanical Properties in Bio-based Polyurethane via Asymmetric Hydrogen Bonds

DOI：10.11777/j.issn1000-3304.2025.25136

摘要

Abstract

关键词

Keywords

references