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Multi-Solvent Responsive Self-Folding Hydrogel Sheets
阳丽华
Author NameAffiliationE-mail
阳丽华 CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China lhyang@ustc.edu.cn 
Abstract:
Intense interest has been directed towards the development of materials which can reconfigure into 3D structures that are uniquely and proportionally responsive to external cues. The phenomenon which spatial variations in hydrogel stimulates the formation of three-dimensional shape is a powerful tool for the preparation of responsive materials. Herein we design self-folding hydrogel based on Poly (ethylene glycol) methyl ether methacrylate (OEGMA) and 2-(2-Methoxyethoxy) ethyl methacrylate (MEO2MA). The P(MEO2MA-co-OEGMA) gel can self-assemble into 3D morphologies in multi-solvents at room temperature. The differential swelling leads enhanced tendency of internal stresses, resulting in reversible transformations between three-dimensional shape and two-dimensional sheets. We show that gel composition, gaseous environment, and forming process play an important role in hydrogel self-folding. This simple method provides a powerful route for the fabrication of self-folding hydrogels which are likely to be applicable to a wide variety of fields.
Key words:  Hydrogel, Self-folding, Solvent responsive
FundProject:
Multi-Solvent Responsive Self-Folding Hydrogel Sheets
阳丽华
摘要:
Intense interest has been directed towards the development of materials which can reconfigure into 3D structures that are uniquely and proportionally responsive to external cues. The phenomenon which spatial variations in hydrogel stimulates the formation of three-dimensional shape is a powerful tool for the preparation of responsive materials. Herein we design self-folding hydrogel based on Poly (ethylene glycol) methyl ether methacrylate (OEGMA) and 2-(2-Methoxyethoxy) ethyl methacrylate (MEO2MA). The P(MEO2MA-co-OEGMA) gel can self-assemble into 3D morphologies in multi-solvents at room temperature. The differential swelling leads enhanced tendency of internal stresses, resulting in reversible transformations between three-dimensional shape and two-dimensional sheets. We show that gel composition, gaseous environment, and forming process play an important role in hydrogel self-folding. This simple method provides a powerful route for the fabrication of self-folding hydrogels which are likely to be applicable to a wide variety of fields.
关键词:  Hydrogel, Self-folding, Solvent responsive
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