Dynamics of Polymers at Surfaces

这项研究的目的是探索聚合物在表征良好的单一固体表面上的流动性。通过测量聚合物首先吸附到表面，然后在自由溶液中与标记的聚合物交换的动力学，我们将试图了解聚合物在薄界面区域的特征迁移率和机制。感兴趣的实验变量将包括分子量、溶剂质量、溶液浓度和聚合物拓扑。具有相同链段数量的聚合物的自我交换将是一个特别值得关注的问题。研究方法是衰减全反射红外光谱分析。这些结果将与聚合物行为的现代物理理论相关联，并可能在层析、胶体稳定性和絮凝、润滑和成膜方面得到应用。

The objective of this research is to probe the mobility of polymers at well-characterized single solid surfaces. By measuring the kinetics with which polymers first adsorb to a surface and then exchange with labelled polymers originally in free solution, we will seek to understand the characteristic rates and mechanism of mobility of polymers in thin interfacial regions. Experimental variables of interest will include molecular weight, solvent quality, solution concentration, and polymer topology. The self-exchange of polymers with the same number of segments will be a special concern. The method of investigation is infrared spectroscopy in attenuated total reflection. The results will be correlated with modern physical theories of polymer behavior, and may find application in chromatography, colloidal stability and flocculation, lubrication, and film formation.