关键词: 聚合物, 界面, 吸附, 双偏振干涉测量技术, 相互作用

Abstract: Dual polarization interferometry (DPI) technology is a label-free，real-time，precise and sensitive technique. It allows real-time，dynamic and quantitative determination of the density，thickness and mass for molecular bilayer or multilayer，revealing the relationship between molecular structure and interfacial activity. The principle and characteristics were briefly introduced and the current applications of DPI in polymer activity at solid-liquid interface were extensively reviewed. The process of polymer adsorption on oil-water interface by the experience of foreign scholars was studied for reference and the thermodynamic and kinetic model for polymer adsorption was established，and then the mechanism of the polymer adsorption on oil-water interface can be revealed from molecular level，providing new ideas and theoretical basis in the treatment of polymer-contained water. With the development of DPI，this technique can be applied in colloid surface chemistry，material surface chemistry and nanometer chemistry.

Key words: polymer, interface, adsorption, dual polarization interferometry, interaction