智能乳液凝胶的形成、机理与性能研究

乳液凝胶以乳液固有的异质网络结构与独特的组分兼容性，是软物质材料发展的重点。通过聚合方式提高材料的力学性能无法实现快速的环境响应性，应用受到了限制。本项目瞄准动态建构化学与自组装理念，构建功能改性的连续相和分散相网络，制备兼具良好力学性能及快速环境响应性的智能乳液凝胶；探索非共价键与动态共价键协同驱动下微观结构和宏观性能之间的内在联系，描绘出规律性；考察乳液凝胶微观结构在外界因素变化，如温度、氧化还原、溶剂、pH 改变的可控转变规律，获取智能乳液凝胶的可控构筑方法；表征乳液凝胶的机械性能、pH 响应性、自粘附性、形状记忆性及表面可调润湿性，明晰外界因素对乳液凝胶宏观性能的影响；制备兼具高动力学稳定性、良好力学性能及快速响应性的乳液凝胶材料，探索乳液凝胶在液体可控运输、生物医药及日用化工领域等的应用。项目的实施将为功能化乳液凝胶的形成提供理论依据，推动软物质科学的发展。

Emulsion-gels based on heterogeneous networks possess unique component compatibility and environmental adaptability, leading to the promotion of gel soft materials under complicated environments. At present, the polymerizable monomers are introduced to continuous/dispersed phase, contributing to the improved mechanical properties but impaired responsive rate. Apparently, the existing emulsion gels cannot realize long-term and efficient applications in the engineering field. This project focuses on the dynamically covalent chemistry and the fundamental principles of self-assembly, and tries to construct the functionally modified dispersed phase and continuous phase networks to acquire the smart emulsion gels with excellent mechanical properties and rapid environmental responsiveness. The internal relationship between microstructure and macroscopic properties and the formation rules synergistically driven by the non-covalent bond and dynamic covalent bond will be explored in detail to get regular conclusions. The impacts of external stimula, including temperature, redox, solvent, and pH on microscopic structure were also investigated to obtain the reversibly preparing manner of smart emulsion gels. The mechanical properties, pH responsiveness, self-adhesion, shape memory performances, and adjustable surface wettability of emulsion gels will be characterized, and investigate the effects of external stimulus on the macroscopic performances of emulsion gels. The emulsion gel materials with high dynamic stability, excellent mechanical properties and fast response will be selected to explore the application in the fields of liquid controllable transportation, biomedicine and household chemical industry, etc. The implementation of the project will provide a theoretical basis for the construction of functional emulsion gels, which will promote the development of the soft material science.