Conference CSI, Jian Ping Gong, Hokkaido University

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27 novembre 12:00 » 13:00 — Amphi

Self-growing hydrogels by mechanical training

Jian Ping Gong
Graduate School of Life Science, Hokkaido University ; Faculty of Advanced Life Science, Soft Matter GI-CoRE, WPI-ICReDD, Hokkaido University, Japan

Living tissues, such as muscle, autonomously grow and remodel themselves to adapt to their surrounding mechanical environment through metabolic processes. By contrast, typical synthetic materials cannot grow and reconstruct their structures once formed. We present a strategy for developing “self-growing” polymeric materials that respond to repetitive mechanical stress through an effective mechanochemical transduction in the robust double network hydrogels [Matsuda, et al., Science, 2019]. We show that the double-network hydrogels, with supply of monomers, self-grow and significantly strengthen under repetitive loading. Such sustained self-growing is through a repetitive structural destruction and reconstruction process, in analogy to the metabolic processes of biological system. This strategy also endows to impart the hydrogels with tailored functions at desired positions by mechanical stimuli. This work may pave the way for the development of self-growing gel materials for applications such as soft robots and intelligent devices.





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