Entnetzungsphänomene und Stabilität von dünnen Filmen aus Polymeren mit perfluorierten Substituenten

全氟取代基聚合物薄膜的去湿现象和稳定性

• 批准号: 5108952
• 负责人: Professor Dr. Martin Möller
• 金额: --
• 依托单位: DWI - Leibniz-Institut für Interaktive Materialien e.V.
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 1998
• 资助国家: 德国
• 起止时间: 1997-12-31 至 2002-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5108952?language=en
• 关键词: Entnetzungsph; nomene; und; Stabilit; von

This project is directed towards stability and structure of thin films of polymers with perflorinated side chains. This is of practical importance for oil-, water and soil repellent coatings for textiles and polymers as well as for the coating technology itself. Our recent study has shown that semifluorinated polymers undergo layer-by-layer autophobic dewetting. This phenomenon is controlled by interplay between entropically favorable coiling of the backbone and energetically favored ordering of the side chains. Film stability and kinetics of the dewetting process will be studied systematically in dependence of the polymer structure, film thickness and interaction with the substrate. Hereby, a series of linear polymers with cristallizable perfloroalkyl side chains and intrinsically disordered perfluoroligoether side chains will be prepared. In addition to the current research, a new technique for micropatterning of thin polymer films will be developed based on vitrification of the water condensation pattern on a surface of a semifluorinated polymer solution. This approach allows preparation of a hexagonal pattern with a periodicity ranging from 100 to 10000 nm.

该项目针对具有全氟化侧链的聚合物薄膜的稳定性和结构。这对于纺织品和聚合物的防油、防水和防垢涂层以及涂层技术本身具有实际重要性。我们最近的研究表明，半氟化聚合物经历逐层自憎性去湿。这种现象是由主链的熵有利卷曲和侧链的能量有利有序之间的相互作用控制的。膜的稳定性和动力学的去湿过程将系统地研究在依赖于聚合物的结构，膜的厚度和与基板的相互作用。据此，将制备一系列具有可结晶的全氟烷基侧链和本征无序的全氟低聚醚侧链的线性聚合物。除了目前的研究，一种新的技术，用于微图案化的薄聚合物膜将开发基于玻璃化的水冷凝图案的表面上的半氟化聚合物溶液。该方法允许制备具有范围从100至10000 nm的周期性的六边形图案。