Chemical grafting has been employed to introduce hydrophilic groups onto a polysulfone membrane, in an attempt to improve its hydrophilicity and anti-fouling capability. 利用化学接枝方法在膜的表面引入亲水基团，提高膜的抗污染能力。
It also introduces intermolecular interaction, types of interaction force, hydrogen bond, hydrophilic and hydrophobic groups, surface tension and surfactants. 介绍分子间相互作用，作用力类型，氢键，亲水基团与疏水基团，表面张力与表面活性剂。
