基于流变学的双连续相形态控制及多孔复合材料制备的研究

As one of the most important members in the porous material family, porous polymeric material has attracted much attention recently. Thus, many new approaches or modified ways based on traditional methods have been developed to prepare polymeric materials with porous structure. Each approach has its own merits, but also shows limits in various applications. In this project, thermodynamic and kinetic aspects concerning the interfacial localization of nanoparticles with various kinds of topological structure will be studied in an emulsion system using rheological tools, aiming at revealing mechanism of formation and evolution of bicontinuous morphology of emulsion in the presence of nanoparticles, and developing emulsion and suspension rheology. Then the bicontinuous microemulsion system stabilized by solid nanoparticles will be prepared as the template with controllable domain size for following polymerization to finally obtain porous polymers. The effects of those interfacial-localized nanoparticles and their percolation network structure on the reaction kinetics and phase separation level will be explored in detail, aiming at obtaining porous polymers with controllable pore structure and, further fabricating functionalized polymer alloy materials. The main objective of this work is to develop preparation ways of porous polymers and, to extend the approach to fabricate functional polymer alloy with high performance.

作为多孔材料中最重要的一类，聚合物基多孔材料是当今材料领域的研究热点。除了传统的制备方法外，近年来围绕聚合物基多孔材料制备的新途径或是改进的方法不断涌现。每一种制备方法都有其优点，但也存在一定的缺陷或局限性。本项目拟首先通过流变学的方法研究拓扑结构不同的纳米粒子在乳液体系中界面选择性分布的热力学和动力学影响因素，揭示双连续相形态形成和演化的过程，在发展乳液和悬浮体系流变学的同时，制备出纳米粒子稳定界面的双连续相微乳液，并从工艺上实现双连续相相畴可控的目标；随后以此双连续相微乳液为模板，制备多孔聚合物复合材料；在此基础上明确界面分布的纳米粒子及其逾渗网络形成的散热通道对聚合反应动力学和相分离的影响，实现相分离和孔结构可控的目标，最终获得一系列不同结构且功能化的多孔材料以及聚合物合金材料；由此发展多孔聚合物材料的制备方法，并拓展高性能及功能化的聚合物合金材料的制备途径。

作为多孔材料中最重要的一类，聚合物基多孔材料是当今材料领域的研究热点。除了传统的制备方法外，近年来围绕聚合物基多孔材料制备的新途径或是改进的方法不断涌现。每一种制备方法都有其优点，但也存在一定的缺陷或局限性。本项目首先通过流变学的方法研究了拓扑结构不同的纳米粒子在乳液体系中界面选择性分布的热力学和动力学影响因素，揭示了双连续相形态形成和演化的过程，在此基础上制备出采用纳米粒子稳定界面的双连续相微乳液，并从工艺上实现了双连续相相畴可控的目标；随后以此双连续相微乳液为模板，制备出了多孔聚合物复合材料；进而明确了界面分布的纳米粒子及其逾渗网络形成的散热通道对聚合反应动力学和相分离的影响，实现了相分离和孔结构可控的目标，最终获得一系列不同结构且功能化的多孔材料以及聚合物合金材料；本项目研究成果为多孔聚合物材料的制备方法的拓展，以及高性能及功能化的聚合物合金材料的制备提供了新的途径。