Polymer Surface Chemistry: Structure and Reactivity of Surface Segments and Oligomeric Chain Distributions

该研究项目由分析和表面化学计划和MPS多学科活动办公室支持，解决了聚合物表面聚合物段表面分离的问题。Gardella教授和他在纽约州立大学布法罗分校的研究小组使用表面分析方法，包括二次离子质谱法和x射线光电子能谱法来探测各种聚合物表面的组成。这个多学科合作项目结合了合成聚合物科学家的努力，他们将选择硅氧烷聚合物，并结合本小组在应用各种表面表征方法研究这些材料方面的专业知识。硅氧烷聚合物单层膜组分通过上层聚合物的扩散动力学将使用这一系列方法来确定。一系列硅氧烷共聚物的段长和分子量分布将作为聚合物结构和制备条件的函数进行研究。确定聚合物表面和界面的结构和反应性是这项工作的总体目标。共聚物体系的体微观结构与表面组成之间的关系是聚合物表面化学中一个很少被探索的领域。这个多学科合作研究项目使用了该小组最先进的表面分析方法来探测共聚物界面上聚合物段的分离，这些共聚物界面将由具有合成聚合物专业知识的合作者制备，并解决这些成分变化对这些材料表面性能的影响。这些信息对于设计具有有用表面特性的新型聚合物体系至关重要。

This research project, supported by the Analytical and Surface Chemistry Program and the MPS Office of Multidisciplinary Activities, addresses the question of surface segregation of polymer segments at polymer surfaces. Professor Gardella and his research group at SUNY-Buffalo use methods of surface analysis including secondary ion massspectrometry and X-ray photoelectron spectroscopy to probe the composition of various polymer surfaces. This collaborative multidisciplinary project combines the efforts of synthetic polymer scientists who will make selected siloxane polymers with this group's expertise in the application of a variety of surface characterization methods to the study of these materials. The kinetics of diffusion of the components of siloxane polymer monolayer films through overlayer polymers will be determined using this array of methods. Segment length and molecular weight distribution for a range of siloxane copolymers will be examined as a function of polymer architecture and preparation conditions. The determination of structure and reactivity at polymer surfaces and interfaces is the overall goal of this work. The connection between the bulk microstructure of copolymer systems and the surface composition is a little explored area of polymer surface chemistry. This collaborative multidisciplinary research project uses state of the art surface analytical methods of this group to probe the segregation of polymer segments at copolymer interfaces that will be prepared by collaborators with synthetic polymer expertise, and addresses the effects of these compositional changes on the surface properties of these materials. This information is vital to the design of new polymer systems with useful surface properties.