The interaction mechanism between tween-80 ( polyoxyethylene sorbitol fatty acid esters) and liposome membrane is studied. The structure of sterically stabilized liposome membrane is verified by some analytical means such as nephelometry, DSC,~ 1H-NMR and so on. 研究了表面活性剂吐温-80(聚氧乙烯山梨醇脂肪酸酯)与脂质膜间的相互作用机理,运用浊度测定、DSC1、H&NMR等分析手段验证了脂质膜的立体稳定结构。