【摘要】 采用小角 x 射线散射法（SAXS）研究了 CH₂Cl₂分别对磷脂酰胆碱（PC）和磷脂酰乙醇胺（PE）液晶结构影响的机理。通过比较得知,CH₂Cl₂对PC 和 PE 液晶结构影响不同之处,主要是 PC 和 PE 结构不同所致。在 CH₂Cl₂的作用下,PC 液晶态从 L_β相经过 L_α相最后变成 LH。而 PE 液晶态却从 L_β相经过 L_α相最后变成 H_Ⅱ相。说明电偶极矩 M≠0的物质有使“棒状”的 PC 液晶态形成片层六角形的机理,对“锥状”的 PE 液晶态却有诱发其形成 H_Ⅱ相的机理。更多还原

【Abstract】 This treatise introduces the research results in using the method of SAXS（the small angle X-ray scattering）for investigating the influence of CH₂Cl₂on the liquid-crystal structure of phosphatidylcholinc（PC）and phosphatidylcthanclamine（PE）.Experi- ments show the following phenomena:the influcnce of CH₂Cl₂on the PC liquid-crystal structure is different from the influence of CH₂Cl₂on the PE liquid-crystal structure in that the PC structure is different from the PE structure.Under CH₂Cl₂action,the PC liquid-crystal phase goes through L_x phase to change from L_β phase into LH （lameller-hexagonal）phase.The results show clearly that the substance of moment of electric dipole μ=0 is the mechanism of forming 1,ameller-hexagonal on the“clubbed”PC liquid-crystal molecule and the mechanism of bringing out forming H_п phase on the“ta- per”PE liquid-crystal mloecule.更多还原