Surface Equation of State for Pure Phospholipid Monolayer at the Air/Water Interface  

作　　者：曾作祥 陈琼 薛为岚 聂飞 

机构地区：[1]Institute of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

出　　处：《Chinese Journal of Chemical Engineering》2004年第2期263-266,共4页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No. 20076012).

摘　　要：A surface equation of state, applicable to liquid-expanded (LE) monolayers, was derived by analyzing the Helmholtz free energy of the LE monolayers. Based on this equation, a general equation was obtained to describe all states of single-component phospholipid monolayers during comprassion. To verify the applicability of the equation, π-A isotherms of 1,2-dipalmitoylphosphatidylcholine (DPPC), 1,2-dipalmitoylphosphatidylglycerol (DPPG), and 1,2-dimyristoyphosphatildylcholine (DMPC) were measured. The comparison between model and experimental values indicates that the equation can describe the behavior of pure phospholipid monolayers.A surface equation of state, applicable to liquid-expanded (LE) monolayers, was derived by analyzing the Helmholtz free energy of the LE monolayers. Based on this equation, a general equation was obtained to describe all States of single-component phospholipid monolayers during comprassion. To verify the applicability of the equation, π-A isotherms of 1,2-dipalmitoylphosphatidylcholine (DPPC), 1,2-dipalmitoylphosphatidylglycerol (DPPG), and 1,2-dimyristoyphosphatildylcholine (DMPC) were measured. The comparison between model and experimental values indicates that the equation can describe the behavior of pure phospholipid monolayers.

关 键 词：π-A isotherms 1 2-dimyristoyphosphatildylcholine 1 2-dipalmitoylphosphatidylcholine 1 2-dipal-mitoylphosphatidylglycerol state equation 

分 类 号：O642[理学—物理化学]