化工学报2025，Vol.76Issue(11)：6077-6085,9.DOI:10.11949/0438-1157.20250237
液态金属/环糊精复合仿生记忆水凝胶
Liquid metal/cyclodextrin composite biomimetic memory hydrogel
摘要
Abstract
The liquid metal(LM)/β-cyclodextrin(CD)composite was prepared by compounding liquid metal(LM)with β-cyclodextrin(CD)through a solvent-free stirring strategy.This composite was used as an initiator to trigger the copolymerization of acrylamide(AAm)monomers,successfully synthesizing hydrogels with gradient LM/CD distribution.The hydrophobic cavity of CD can encapsulate LM droplets,and its surface hydroxyl groups form physical anchors with LM through coordination interactions.Combined with the steric hindrance effect to inhibit particle agglomeration,this method can effectively disperse 60％(mass fraction)of LM under stirring conditions of 2000 r/min for 30 min,allowing LM/CD to form a self-supporting and conductive lamellar structure.The bottom resistance of LM/CD hydrogel was changed by tapping to induce directional precipitation of LM.Electrochemical tests showed that the bottom resistance of LM/CD hydrogel was linearly related to the number of tapping,which could realize bionic memory function and keep the resistance stable during compression-release cycle.Compared with traditional conductive polymer-modified hydrogels,this material combines high conductivity(bottom surface resistance 0.808 Ω),excellent mechanical properties,and stable memory behavior,providing new ideas for the design of intelligent biomimetic materials.关键词
凝胶/仿生记忆/液态金属/环糊精/导电性能/团聚/聚合物Key words
gels/biomimetic memory/liquid metal/cyclodextrin/conductivity/agglomeration/polymers分类
化学化工引用本文复制引用
林星月,徐秀彬,李鑫,韦林洁,王灏,姚希,吴旭..液态金属/环糊精复合仿生记忆水凝胶[J].化工学报,2025,76(11):6077-6085,9.基金项目
国家自然科学基金项目(22278093,22108049) （22278093,22108049）
广东省杰出青年基金项目(2023A0505050095) （2023A0505050095）
广东省科技厅项目(2023B1515020092,2024A1515011240) （2023B1515020092,2024A1515011240）
广州市科技项目(2023A03J0031,2024A04J3276) （2023A03J0031,2024A04J3276）
