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Solvent-Triggered Self-Folding of Hydrogel Sheets
Shuai Qin,Li-wei Hui,Li-hua Yang*,Ming-ming Ma*
Author NameAffiliationE-mail
Shuai Qin CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China  
Li-wei Hui CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China  
Li-hua Yang* CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China lhyang@ustc.edu.cn 
Ming-ming Ma* CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China mma@ustc.edu.cn 
Abstract:
Intense investigations have been attracted to the development of materials which can reconfigure into 3D structures in response to external stimuli. Herein we report on the design and self-folding behaviors of hydrogels composed of poly(ethylene glycol) methyl ether methacry-late (OEGMA) and 2-(2-methoxyethoxy) ethyl methacrylate (MEO2MA). Upon immersion into a variety of solvents at room temperature, the resulting P(MEO2MA-co-OEGMA) hydrogel sheets self-fold into 3D morphologies, and the observed transformation in shape is reversible. We further show that composition of the gel, gaseous environment, and preparation procedure play important roles in the self-folding behavior of the resulting hydrogels. This work provides a facile approach for fabricating self-folding hydrogels.
Key words:  Self-folding, Solvent responsive, Shape transformation, Hydrogel
FundProject:
多溶剂响应自折叠水凝胶
秦 帅,惠丽伟,阳丽华*,马明明*
摘要:
本文基于寡聚乙二醇甲醚甲基丙烯酸酯(OEGMA)和2-甲基-2-丙烯酸-2-(2-甲氧基乙氧基)乙酯(MEO2MA)设计了一种自折叠水凝胶. 在室温下,P(MEO2MA-co-OEGMA)凝胶能够在多种溶剂中自折叠形成三维结构. 凝胶不均匀膨胀导致内应力增强,从而使得片状凝胶可以在三维结构和二维形状之间进行可逆转换. 研究表明,凝胶组成、固化气体环境和成型过程对水凝胶的自折叠过程起着重要的影响.
关键词:  自折叠,多溶剂响应,P(MEO2MA-co-OEGMA)水凝胶
DOI:10.1063/1674-0068/31/cjcp1803025
分类号: