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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Life Science / Faculty of Advanced Life Science >
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Mechanism of temperature-induced asymmetric swelling and shrinking kinetics in self-healing hydrogels
| Title: | Mechanism of temperature-induced asymmetric swelling and shrinking kinetics in self-healing hydrogels |
| Authors: | Cui, Kunpeng Browse this author | | Yu, Chengtao Browse this author | | Ye, Ya Nan Browse this author | | Li, Xueyu Browse this author | | Gong, Jian Ping Browse this author →KAKEN DB |
| Issue Date: | 6-Sep-2022 |
| Publisher: | National Academy of Sciences. |
| Journal Title: | Proceedings of the National Academy of Sciences of the United States of America (PNAS) |
| Volume: | 119 |
| Issue: | 36 |
| Start Page: | ｖ |
| End Page: | e2207422119 |
| Publisher DOI: | 10.1073/pnas.2207422119 |
| Abstract: | Understanding the physical principle that governs the stimuli-induced swelling and shrinking kinetics of hydrogels is indispensable for their applications. Here, we show that the shrinking and swelling kinetics of self-healing hydrogels could be intrinsically asymmetric. The structure frustration, formed by the large difference in the heat and solvent diffusions, remarkably slows down the shrinking kinetics. The plateau modulus of viscoelastic gels is found to be a key parameter governing the formation of structure frustration and, in turn, the asymmetric swelling and shrinking kinetics. This work provides fundamental understandings on the temperature-triggered transient structure formation in self-healing hydrogels. Our findings will find broad use in diverse applications of self-healing hydrogels, where cooperative diffusion of water and gel network is involved. Our findings should also give insight into the molecular diffusion in biological systems that possess macromolecular crowding environments similar to self-healing hydrogels. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/88849 |
| Appears in Collections: | 生命科学院・先端生命科学研究院 (Graduate School of Life Science / Faculty of Advanced Life Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 龔 剣萍 (Gong Jian Ping)
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