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

该研究项目由分析和表面支持， 化学计划和MPS多学科活动办公室，解决了聚合物表面聚合物链段的表面分离问题。 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的方法 分析包括二次离子质谱和X射线 光电子能谱探测各种 聚合物表面。 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与该小组在各种表面表征方法应用于这些材料研究方面的专业知识。 硅氧烷聚合物单层膜的组分通过覆盖层聚合物的扩散动力学将使用这一系列方法来确定。 链段长度和分子量分布的范围内的硅氧烷共聚物将被检查作为一个功能的聚合物结构和制备条件。 在聚合物表面和界面的结构和反应性的测定是这项工作的总体目标。 聚合物本体微观结构与聚合物分子结构的关系 系统和表面组成是一个小探索领域， 聚合物表面化学 这个合作的多学科研究项目使用该小组的最先进的表面分析方法来探测聚合物链段在共聚物界面处的分离，该共聚物界面将由具有合成聚合物专业知识的合作者制备，并解决这些组成变化对这些材料表面性质的影响。 这些信息对于设计具有有用表面性质的新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.