﻿ 端基被平面壁吸附的高分子链的Monte Carlo研究

### 端基被平面壁吸附的高分子链的Monte Carlo研究

1. 浙江大学物理系，杭州　310028;台州师范专科学校物理系，台州　317000;浙江大学化学系，杭州　310028
• 收稿日期:2000-10-20 修回日期:2001-01-03 发布日期:2001-05-15
• 通讯作者: 罗孟波 E-mail:mbluo@mail.hz.zj.cn

### Monte Carlo Study on Polymer Chain with One End Attached to a Surface

Luo Meng-Bo;Chen Ying-Cai;Huang Jian-Hua;Xu Jian-Min

1. Department of Physics,Zhejiang University,Hangzhou　310028;Department of Physics,Taizhou Teacher's College,Taizhou　317000;Department of Chemistry,Zhejiang University,Hangzhou　310028
• Received:2000-10-20 Revised:2001-01-03 Published:2001-05-15
• Contact: Luo Meng-Bo E-mail:mbluo@mail.hz.zj.cn

Abstract: The endtoend vector distribution P(R) of a linear randomflight polymer chain with one end attached to an infinite large flat surface is investigated by Monte Carlo method.The meansquare endtoend distance can be given by =(4/3)n,and the mean angle by <θ>=45 ,where n is the chain length, θ is the angle between the endtoend vector R and Z axis normal to the surface.The radial distribution is P(R)dR=2A4 exp (－A2R2)R3 dR and the angular distribution isP(θ)dθ =sin 2θdθ ,here A2=3/(2n).The shape factor :: is about 1:2.73:12.5.The distribution of angle ,the angle between the longest principal axis L3 and Z axis,is approximately P(α)dα =sinαdα ,and its mean value <α> is nearly equal to 55.5 .