Li Weizheng, Li Lingling, Liu Ziyang, Zheng Sijie, Li Qingning, Yan Feng
Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies College of Chemistry, Suzhou Key Laboratory of Soft Material and New Energy, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.
Adv Mater. 2023 Jul;35(30):e2301383. doi: 10.1002/adma.202301383. Epub 2023 Jun 11.
Common natural and synthetic high-strength materials (such as rubber, plastics, ceramics, and metals) undergo the occurrence of poor deformability. Achieving high strength and large deformation simultaneously is a huge challenge. Herein, high-strength ionogels are developed through the synergy of force-induced crystallization and halometallate ionic liquid created supramolecular ionic networks. The prepared poly(vinyl alcohol)/halometallate ionic liquid ionogels show excellent mechanical properties, including ultimate fracture stress (63.1 ± 2.1 MPa), strain (5248 ± 113%), and unprecedented toughness (1947 ± 52 MJ m ), which is much higher than that of most metals and alloys. Furthermore, the ionogels can achieve reversibility by water to realize green recovery and restoration of damaged mechanical properties.
常见的天然和合成高强度材料（如橡胶、塑料、陶瓷和金属）存在变形性差的问题。同时实现高强度和大变形是一项巨大的挑战。在此，通过力致结晶和卤金属酸盐离子液体形成的超分子离子网络的协同作用，开发出了高强度离子凝胶。制备的聚（乙烯醇）/卤金属酸盐离子液体离子凝胶表现出优异的力学性能，包括极限断裂应力（63.1±2.1兆帕）、应变（5248±113%）和前所未有的韧性（1947±52兆焦/立方米），这远高于大多数金属和合金。此外，离子凝胶可通过水实现可逆性，以实现绿色回收和受损力学性能的恢复。
