两嵌段共聚高分子在固液界面吸附的Monte Carlo模拟(Ⅰ)吸附链的构型分布

Monte Carlo Simulations of Adsorption of Diblock Copolymers at Solid liquid Interface(Ⅰ) The Configuration Distribution of Adsorbed Chains

用 Monte Carlo方法对两嵌段共聚高分子在固液界面的吸附进行模拟 ,获得了固液界面区吸附链节的分布和吸附构型大小分布等微观信息 .考察了吸附性链节的吸附能 εAa和两嵌段共聚高分子中吸附性链节比例 f对固液界面区高分子链节的分布和各种吸附构型大小的影响 .结果表明 ,吸附层厚度主要由两嵌段共聚高分子中非吸附性链段的长度决定 .

Monte Carlo simulation method was used to simulate the adsorption of diblock copolymers at solid liquid interface. The microstructure information of adsorbed layer, such as adsorbed segment profile and the distribution of size of various adsorption configurations, was obtained. In this work, the effect of attractive segment content and its adsorption energy on the adsorbed segment profile and distribution of size of configuration have been inspected. It is shown that the adsorbed layer thickness is mainly determined by the length of non attractive segment.