Simultaneous Improvement of Mechanical Strength, Toughness, and Self‐healability of Elastomers Enabled by F─H‐Bond‐Based Nanoconfinement
Abstract
Abstract There are often trade‐offs among high mechanical strength, high toughness, and efficient self‐healing. Herein, we present a biomimetic strategy utilizing F─H bonds for nanoconfinement to achieve the simultaneous enhancement of these conflicting properties. The mechanical strength, toughness, and self‐healing efficiency of a fluorinated crosslinked poly(urethane‐urea) (CPUU‐FA) elastomer are improved 1.3‐, 1.5‐, and 1.2‐fold, respectively, compared with those of its nonfluorinated counterpart. Notably, the CPUU‐FA has the highest recorded puncture energy (887 mJ) among polymeric elastomers and the highest fracture energy (117 kJ m −2 ) among reported thermoset elastomers. Moreover, it exhibits excellent self‐healing efficiency (99%), remarkable reprocessability, and a low surface energy (56 MJ m −2 ). The application of self‐healing elastomers in the fabrication of soft electronics is further demonstrated. The molecular design strategy is anticipated to inspire new developments in high‐performance materials for cutting‐edge applications.
Article Details
Authors (10)
Yujie Jia
Chengzhen Chu
State Key Laboratory of Advanced Fiber Materials Institute of Functional Materials College of Materials Science and Engineering Research Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society) Shanghai Engineering Research Center of Nano‐Biomaterials and Regenerative Medicine Donghua University 2999 North Renmin Road Shanghai 201620 P.R. China
Zekai Wu
State Key Laboratory of Advanced Fiber Materials Institute of Functional Materials College of Materials Science and Engineering Research Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society) Shanghai Engineering Research Center of Nano‐Biomaterials and Regenerative Medicine Donghua University 2999 North Renmin Road Shanghai 201620 P.R. China
Yufeng Ni
State Key Laboratory of Advanced Fiber Materials Institute of Functional Materials College of Materials Science and Engineering Research Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society) Shanghai Engineering Research Center of Nano‐Biomaterials and Regenerative Medicine Donghua University 2999 North Renmin Road Shanghai 201620 P.R. China
Shichun Cao
State Key Laboratory of Advanced Fiber Materials Institute of Functional Materials College of Materials Science and Engineering Research Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society) Shanghai Engineering Research Center of Nano‐Biomaterials and Regenerative Medicine Donghua University 2999 North Renmin Road Shanghai 201620 P.R. China
Tao Liao
Ce Shi
Yongfeng Men
State Key Laboratory of Polymer Science and Technology Changchun Institute of Applied Chemistry Chinese Academy of Sciences Renmin Street 5625 Changchun 130022 P.R. China
Junfen Sun
State Key Laboratory of Advanced Fiber Materials College of Materials Science and Engineering Donghua University Shanghai P. R. China
Zhengwei You
State Key Laboratory of Advanced Fiber Materials Institute of Functional Materials College of Materials Science and Engineering Research Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society) Shanghai Engineering Research Center of Nano‐Biomaterials and Regenerative Medicine Donghua University 2999 North Renmin Road Shanghai 201620 P.R. China