摘要
本文用ATR(衰减全反射)方法研究聚合物在金属表面的吸附,对在不同溶剂中的聚苯乙烯在银表面的吸附进行测量,获得了吸附量随时间变化的规律,以及吸附薄膜的厚度d,介电常数实部ε_r和虚部ε_i.结果表明,吸附随时间增加,随分子量增加,不良溶剂聚合物吸附快于良性溶剂,吸附过程符合Langmuir方程.实验方法适用于任何类溶液.甚至散射溶液.
This paper uses Attenuated Total Reflection methods (ATR) to study adsorption of polymer on a metallic surface. Adsorption of polystyrent in various solution on Ag surface was measured. We get adsorption change law with time, adsorptional thickness d and dielectric constants Re∈, Im∈. The result demonstrates that adsorbance of the polymer increases with adsorption time and mol. wt. and that absorbance of not good solvate are more than good solvate. Adsorptional process accords with Langmuir equation. The experimental methods can applied.any solutions and also scattering solutions.
