高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (9): 1470.

• 论文 • 上一篇    下一篇

两嵌段共聚高分子在固液界面吸附的Monte Carlo模拟(Ⅱ)──界面浓度分布和吸附量

陈霆, 刘洪来, 胡英   

  1. 华东理工大学化学系, 上海 200237
  • 收稿日期:1998-09-16 出版日期:1999-09-24 发布日期:1999-09-24
  • 通讯作者: 刘洪来
  • 作者简介:陈霆,男,24岁,硕士研究生.
  • 基金资助:

    国家自然科学基金(批准号:29736170);教育部博士点专项科研基金(批准号:9425107

Monte Carlo Simulations of Adsorption of Diblock Copolymers on Solid-liquid Interface (Ⅱ)──The Segment Concentration Profile and Adsorption Amount

CHEN Ting, LIU Hong-Lai, HU Ying   

  1. Department of Chemistry East China University of Science and Technology, Shanghai 200237, China
  • Received:1998-09-16 Online:1999-09-24 Published:1999-09-24

PDF (PC)

被引次数

32

摘要： 用MonteCarlo方法对两嵌段共聚高分子在固液界面的吸附进行模拟,获得了固液界面区总链节密度和吸附链节浓度分布、链附着率、表面覆盖率和吸附量等信息,考察了吸附性链节的对比吸附能 ε>An 和两嵌段共聚高分子中吸附性链节比例f对它们的影响.结果表明,较大时,吸附量先随f的增加而上升,在f=0.4左右达到最大值后逐渐下降.

关键词: 两嵌段共聚物, 吸附, MonteCarlo模拟, 格子模型, 固液界面

Abstract: Monte Carlo simulation method was used to simulate the adsorption of diblock copolymers on solid-liquid interface.The adsorption information, such as total segment density and segment concentration profiles, bound fraction, surface coverage and adsorption amount, are obtained.The effect of attractive segment content f and its adsorption energy was inspected.It is shown that the adsorption amount increases with increasing f when adsorption energy is relatively small.However, if adsorption energy have a larger value, the adsorption amount increases with increasing f at first and reaches a maximum about f=0.5,then decreases with increasing f.This trend coincides well with the experimental results of Tiberg et al.

Key words: Diblock copolymers, Adsorption, Monte Carlo simulation, Lattice model.Solid-liquid interface

中图分类号: 

TrendMD: