Polymer Diffusion on Interfaces and in Porous Media

这个项目是针对高分子链在界面上的传输 和接口。 通过结合表面光 近年来，我们一直在进行散射研究， 与链扩散研究平行，我们将研究（1） 聚合物在空气/水（A/W）界面上的横向扩散; 高分子链在界面上的吸附动力学 气/水和油/水（O/W）扩散;（3）链扩散 研究多孔介质，如热可逆和交联 凝胶。 第一个项目来自于我们对 各种稳定铺展膜的表面粘弹性参数 A/W上的聚合物，因此我们将探讨微观 链式运输的行为，即，聚合物横向扩散 链在单层和薄膜，并将它们与一个 参数如纵向压缩粘度。 的 第二个问题来自这样一个事实，即一个人获得了 高分子链在A/W和O/W上吸附动力学 表面光散射的非侵入性光学方法， 界面倏逝波荧光 可以直接探测吸附机制。 最后一项旨在 系统化了各种凝胶中的链扩散行为， 不同的孔径和网络连接。

This project is directed at polymer chain transport at interfaces and toward interfaces. By combining with surface light scattering studies we have been pursuing in recent years in parallel with the chain diffusion studies, we will examine (1) polymer lateral diffusion on the interface of air/water(A/W); (2) adsorption kinetics of polymer chains onto the interfaces of air/water and oil/water(O/W); and to extend (3) chain diffusion studies to porous media such as thermoreversible and crosslinked gels. The first project is derived from our studies for the surface viscoelastic parameters of stable spread films of various polymers on A/W, and thus we will probe into microscopic behaviors of chain transport, i.e., lateral diffusion of polymer chains in monolayers and thin films, and relate them to a parameter such as the longitudinal compressional viscosity. The second problem is derived from the fact that one gains access to the adsorption kinetics of polymer chains onto A/W amd O/W by non-invasive optical methods of surface light scattering and interface evanescent wave fluorescence whereby different adsorption mechanisms can be probed directly. The last item aims to systematize the chain diffusion behaviors in various gels of different pore sizes and network junctions.