journal article·2022-04-12

Tough and Healable Elastomers via Dynamic Integrated Moiety Comprising Covalent and Noncovalent Interactions

Xiaoyu Gao, Wenru Fan, Wei Zhu, Gao Jiuwei, Pengfang Zhang, Chen Wang, Xuewen Wang, Hesheng Xia, Zhenhua Wang, Wei Huang

Chemistry of Materials· Volume 34· Issue 7
Publisher page

Abstract

Elastomers that combined excellent mechanical performance and healability are essential to the advancement of stretchable electronics. However, the strength and toughness of healable elastomers tend to be mutually exclusive. Herein, a new strategy of the dynamic integrated moiety is developed to construct covalent and noncovalent cross-linked polyurethane (CNPU) elastomers. The covalent and noncovalent interactions synergistically enhance the overall mechanical properties of polyurethane elastomers such as tensile strength (48.8 MPa), toughness (282.9 MJ·m–3), stretchability (1740%), and healing efficiency (116%). Finally, elastic conductive wires are fabricated with high load capacity, stable electrical conductivity under static/dynamic stretching, and robust healability to demonstrate the potential use of CNPU elastomers in stretchable electronics.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Polymer composites and self-healing · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) & Xi’an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi’an 710072, China

College of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, China

The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China

Funding

Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China · Shaanxi Science and Technology Fund · State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University.

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