interfacial dynamics of polymers in interaction with solid substrates

新开发的纳米结构电极使我们能够直接测量固体和聚合物之间界面的分子动力学。基于我们在前一个应用阶段的发现，计划将测量扩展到聚合物的单分子和亚分子层的厚度，如聚（苯乙烯），聚（甲基丙烯酸甲酯），聚（2-乙烯基吡啶）和聚（乙酸乙烯酯）。将特别强调固体表面和聚合物之间的相互作用的修改。在这方面，对具有在两个不同长度尺度上发生的两个介电活性弛豫过程的聚异戊二烯的研究是重要的。另外，设想了接枝体系，如不同分子量的硅氧烷。该项目积极参与SPP 1369中的多方面合作，该项目还涉及纳米多孔系统中包含的聚合物。

The newly developed nano-structured electrodes enable us to measure directly the molecular dynamics in the interface between a solid and a polymer. Based on our findings in the previous application period, it is planned to extend the measurements down to thicknesses of mono- and sub-molecular layers of polymers like poly(styrene), poly(methyl methacrylate), poly(2-vinylpyridine), and poly(vinyl-acetate). Special emphasis will be given to modification of the interaction between the solid surface and the polymer. In this respect studies on polyisoprene having two dielectrically active relaxation processes taking place at two different length scales are of importance. Additionally grafted systems, like siloxanes of varying molecular weight are envisaged. The project is strongly engaged in manifold collaborations within the SPP 1369, which deal also with polymers contained in nano-porous systems.