We used this water - soluble cationic polyelectrolyte pei as a soft cushion for biomimetic membranes in this chapter , and studied the microstructure of polymer - cushioned pure binary and trinary mixed lb and ls films of dimyristoyl phosphatidyicholine ( dmpc ) . cholesterol ( chol ) and sphingomylin ( sph ) ( that is to say study the influence of pei cushion on the microstructure of the monolayers ) deposited from looppm pei water solution subphase by - a isotherms and tapping mode atomic force microscopy 在本章中我們用這種極易溶于水的陽離子型聚合物pei為一軟墊,研究以此軟墊為基底的不同生物分子和它們不同種二元及三元混合單分子膜體系在含pei亞相上的相結(jié)構(gòu)情況,初步的討論了它們以云母為基底的is膜和lb膜的微結(jié)構(gòu)或者說是該軟墊對單分子膜微結(jié)構(gòu)的影響。