Bicontinuous microemulsions in confinement - absorption into porous matrices, phase behavior and transport

限制中的双连续微乳液 - 吸收到多孔基质中、相行为和传输

• 批准号: 455432427
• 负责人: Professor Dr. Thomas Hellweg
• 金额: --
• 依托单位: Arbeitsgruppe Angewandte Physikalische Chemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/455432427?language=en
• 关键词: Bicontinuous; microemulsions; confinement; absorption; into

The proposed project is dedicated to the investigation of bicontinuous microemulsions in disordered mesoporous matrices with respect to their structure and dynamics within the geometric constraints. When a bicontinuous microemulsion penetrates a mesoporous structure, a change in the phase behaviour and thus a change in the physicochemical properties of the microemulsions is expected. In this project the influence of wetting and penetration of porous structures of different hydrophobicity on the phase behaviour of bicontinuous microemulsions will be studied. Microemulsions of ternary phase systems with a temperature sensitive phase behaviour as well as microemulsions of quaternary phase systems based on sugar surfactants will be investigated. The relationship between the propagation in hydrophilic and hydrophobic pores, the wetting behaviour of the bicontinuous microemulsions within these pores and the phase behaviour that develops will be clarified. It will also be investigated how the geometric restriction affects the critical behaviour of the microemulsions and whether microphase separation is induced. The use of small angle scattering methods, especially neutron small angle scattering and optical microscopy (especially single molecule localization microscopy) plays a central role in the structural elucidation within the mesoporous matrices. Within the mesoporous environment a change in the inner dynamics in the microemulsions is also expected, which will be investigated by using neutron spin echo spectroscopy. This will allow a comparison of the dynamics in the volume phase, at planar interfaces and inside pore matrices.

拟议的项目致力于研究无序介孔基质中的双连续微乳液在几何约束内的结构和动力学。当双连续微乳液渗透介孔结构时，预计相行为会发生变化，从而微乳液的物理化学性质也会发生变化。本项目将研究不同疏水性多孔结构的润湿和渗透对双连续微乳液相行为的影响。将研究具有温度敏感相行为的三元相系统的微乳液以及基于糖表面活性剂的四元相系统的微乳液。亲水孔和疏水孔中的传播、这些孔内双连续微乳液的润湿行为以及所发展的相行为之间的关系将得到阐明。还将研究几何限制如何影响微乳液的关键行为以及是否引起微相分离。小角散射方法的使用，特别是中子小角散射和光学显微镜（特别是单分子定位显微镜）在介孔基质内的结构阐明中起着核心作用。在介孔环境中，微乳液的内部动力学也将发生变化，这将通过使用中子自旋回波光谱进行研究。这将允许比较体积相、平面界面和内部孔隙基质的动力学。