化工学报2025，Vol.76Issue(12)：6536-6550,15.DOI:10.11949/0438-1157.20250682
阴/阳离子Gemini表面活性剂复配体系的泡沫稳定性调控及构效关系研究
Study on foam stability regulation and structure-activity relationship of mixed anionic/cationic Gemini surfactants
摘要
Abstract
Mixed anionic/cationic Gemini surfactant systems exhibit significant synergistic effects in improving foam stability,yet their underlying mechanism has not been fully elucidated.Herein,through a combined approach of surface tension measurements and molecular dynamics simulations,the self-assembly behavior of different mixed anionic/cationic Gemini surfactant systems at the air/water interface and their interfacial properties were systematically investigated.The results show that electrostatic interaction and geometric conformational adaption effect between the amine group and anionic polar group,ensures the compact configuration of the polar group region.Meanwhile,conformational optimization and length compatibility between tails promote ordered packing in the hydrophobic tail region.These intermolecular synergistic effects cooperatively cause the mixed surfactants to form a dense and highly ordered adsorption layer at the air/water interface,and significantly enhance the hydration of the polar groups.The resulting enhanced hydration layer and interfacial structure retard the drainage rate of foam films,which in turn endows the foam with superior mechanical strength and resistance to perturbations,thereby significantly improving its macroscopic stability.关键词
分子模拟/泡沫/表面活性剂/复配体系/自组装/协同作用Key words
molecular simulation/foam/surfactants/mixed system/self-assembly/synergism分类
化学化工引用本文复制引用
白阳,姚舒爽,徐梦旭,赵靖雨,于福顺..阴/阳离子Gemini表面活性剂复配体系的泡沫稳定性调控及构效关系研究[J].化工学报,2025,76(12):6536-6550,15.基金项目
山东省自然科学基金项目(ZR2022ME013) （ZR2022ME013）
