高分子在固体表面上吸附最简单的情况是仅有一个链端被吸附,即形成“尾形链”的构象。将此问题简化为半无限空间中的的随机行走问题,加以系统理论研究,导出了不同维数下尾形链的构象分布函数的公式,发现链长N→∞时,尾形链构象数与自由链构象数之比随N~(-1/2)而变化。并证明在受限边界的法向上均方末端距的分量增大一倍,而其余方向上的分量仍保持不变。 The simplest case of polymer adsorption on a solid surface is that only one end of the chain is adsorbed, that is, the conformation of “tail-shaped chain” is formed. The problem is reduced to the problem of random walking in semi-infinite space. The system theory is used to derive the formula of the conformational distribution function of the catenary under different dimensions. It is found that when the chain length is N → ∞, The ratio of conformational number changes with N ~ (-1/2). And prove that in the normal direction of the constrained boundary, the component of the mean square end distance doubles while the remaining components remain unchanged.