和频振动光谱在聚合物表面与界面结构研究中的应用

Probe the Structure of Polymer Surface and Interface by SFG

聚合物表面结构决定其表面性能。由于聚合物体相的干扰,以及表面环境响应性等原因使在原位下获得聚合物"真正"的表面结构的信息变得异常困难。近年来发展起来的和频振动光谱(SFG)能在准单分子层水平上原位研究聚合物表面的基团及其取向等信息,被认为是表征聚合物界面结构的最佳技术手段之一。文中主要综述了SFG在聚合物表面结构及其变化研究中的应用。

Polymer surface properties depend on its surface structure. It is hard to get the ＂real＂ polymer surface structure information due to disturbance from polymer bulk and the polymer surface dynamics. Recently, SFG （sum frequency generation vibrational spectroscopy） has been developed into a powerful technique to probe in-situ surface composition and orientation information at submolecular level. This review summarized the significant achievements in characterization of surface structure and dynamics of polymer by SFG.