Self-Assembly of Amphiphilic Polymers and Polymer/Surfactant Systems at Interfaces, Comparative Study of Solid/Liquid and Air/Liquid Interfaces

两亲性聚合物和聚合物/表面活性剂体系的界面自组装、固/液和空气/液体界面的比较研究

• 批准号: 5297401
• 负责人: Professor Dr. Gerhard Findenegg (†)
• 金额: --
• 依托单位: Institut für Theoretische Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2001
• 资助国家: 德国
• 起止时间: 2000-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5297401?language=en
• 关键词: Self; Assembly; Amphiphilic; Polymers; Polymer

The interaction between surfactants and polyelectrolytes at interfaces and under the influence of the spatial confinement between interfaces will be investigated. The project aims at a better understanding of the question, how the cooperative interaction between polyelectrolytes and opposite charged surfactants in aqueous media is influenced by the presence of a charged or uncharged interface. In particular, for polyelectrolyte/surfactant complexes near a fixed substrate the competition between the interactions of the type polyelectrolyte-surfactant, polyelectrolyte-substrate, and surfactant-substrate is not well understood. Specifically, the significance of the counter ion exchange in the aggregate formation process will be studied. Furthermore it is to be clarified whether and under which conditions polyelectrolyte/surfactant-complexes are bound to charged surfaces and whether the counter ions in this binding process. To clarify these questions, the interaction between polyelectrolyte chains, surfactant and substrate surfaces will be studied by calorimetric measurements. The structure of the adsorbed layers is to be characterized by reflectometry measurements. Investigations in thin free-standing films of aqueous surfactant/polyelectrolyte solutions, as well as polyelectrolyte/surfactant aggregates in the cavities of mesoporous silica glasses from central aspects of the project.

表面活性剂和聚电解质之间的相互作用在界面和界面之间的空间限制的影响下将被调查。该项目旨在更好地理解这个问题，即聚电解质和带相反电荷的表面活性剂在水介质中的合作相互作用如何受到带电或不带电界面的影响。特别是，对于固定基板附近的聚电解质/表面活性剂复合物的类型聚电解质-表面活性剂，聚电解质-基板，和表面活性剂-基板的相互作用之间的竞争还没有很好地理解。具体而言，反离子交换在聚集体形成过程中的意义将被研究。此外，还需要澄清聚电解质/表面活性剂复合物是否以及在何种条件下与带电表面结合，以及反离子是否参与了该结合过程。为了澄清这些问题，将通过量热测量研究双链、表面活性剂和基底表面之间的相互作用。吸附层的结构将通过反射计测量来表征。调查在薄的独立膜的水表面活性剂/水溶液，以及水/表面活性剂聚集体的孔中孔二氧化硅玻璃从该项目的中心方面。