Water/polymer mixtures in hard and soft confinement

硬约束和软约束下的水/聚合物混合物

• 批准号: 203737059
• 负责人: Professor Dr. Bernd Stühn
• 金额: --
• 依托单位: Institut für Physik Kondensierter Materie (IPKM)
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/203737059?language=en
• 关键词: Water; polymer; mixtures; hard; soft

The topic of project 3 is structure, dynamics and phase behavior of mixtures in hard and soft confinement. Starting with water/alcohol mixtures we will focus on mixtures of water and polymers. The experimental methods employed are static and dynamic scattering and dielectric relaxation. The soft confinement is provided by the surfactant layer of water-in-oil microemulsions. This is to be compared with results from the hard confinement as provided by well defined cylindrical pores in ion-track-etched polymer foils. This will enable us to directly observe the impact of the confining wall on the phase behavior of water/alcohol and water/polymer mixtures. The contributions arising from the wall potential and the dynamics of the confinement will be analysed. As a model system for polymers dissolved in water we will use polyethyleneoxide and polypeptides. In the latter case we will study the expected conformational change in confinement. Our aim is to contribute to an understanding of the interplay between spatial confinement on phase behavior and molecular dynamics of the multicomponent system and its coupling to the confining wall.

项目3的主题是硬约束和软约束下混合物的结构、动力学和相行为。从水/酒精混合物开始，我们将重点关注水和聚合物的混合物。所采用的实验方法是静态和动态散射和介电弛豫。油包水微乳液的表面活性剂层提供软限制。这是比较从硬限制的结果，由定义良好的圆柱形孔离子轨道蚀刻聚合物箔。这将使我们能够直接观察到的水/醇和水/聚合物混合物的相行为的限制壁的影响。所产生的贡献从壁电位和动力学的限制将进行分析。作为聚合物溶于水的模型系统，我们将使用聚环氧乙烷和多肽。在后一种情况下，我们将研究在禁闭预期的构象变化。我们的目的是有助于了解的相互作用之间的空间限制相行为和分子动力学的多组分系统和它的耦合到限制壁。