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.

该提出的项目致力于研究介孔矩阵中双连续微乳液的结构和几何约束中的动力学。当双连续微乳液穿透介孔结构时，相位行为的变化，因此预计微乳液的物理化学特性会发生变化。在这个项目中，将研究润湿和不同疏水性多孔结构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第四纪相系统的微乳液。亲水性和疏水性孔中的传播之间的关系，这些孔内双连续微乳液的润湿行为与发展的相行为之间的润湿行为将得到阐明。还将研究几何限制如何影响微乳液的临界行为以及是否诱导了显微合物分离。小角度散射方法的使用，尤其是中子小角度散射和光学显微镜（尤其是单分子定位显微镜）在中孔矩阵内的结构阐明中起着核心作用。在介孔环境中，预计微乳液中内部动力学的变化也将通过中子自旋回声光谱进行研究。这将允许在平面接口和内部孔矩阵中的体积阶段中的动力学进行比较。