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首页> 外文期刊>Journal of Polymer Science >Mechanically tough dry-free ionic hydrogel microfibers swollen in aqueous electrolyte prepared by microfluidic devices
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Mechanically tough dry-free ionic hydrogel microfibers swollen in aqueous electrolyte prepared by microfluidic devices

机译：Mechanically tough dry-free ionic hydrogel microfibers swollen in aqueous electrolyte prepared by microfluidic devices

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摘要

Soft conducting materials in the shape of microfibers with various functional geometries are crucial for soft electronics. To develop highly stretchable conducting microfibers, a microfluidic method is used to prepare hydrogels in a double-network structure. Based on the coagulation of chitosan in cold water and simultaneous photopolymerization and photocrosslinking of N-isopropylacrylamide and N-diethylacrylamide, long microfibers with controlled uniform diameters can be obtained at the junction of a coaxially aligned microchannel device. After further reinforcement of the chitosan chain and exchange of the medium of the hydrogel microfiber with an aqueous electrolyte of lithium bis(trifluoromethanesulfonyl)imide, the prepared ionic hydrogel exhibits high conductivity and stretchability and dry-free properties. Owing to its mechanical robustness and ionic conductivity, we envision a highly stretchable soft electrode with the prepared ionic hydrogel microfiber that can be stretched up to 900. This fiber has potential for applications in soft electronics and wearable devices.

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