作　　者： ; ; ; (苑世领）;

机构地区： 教育部

出　　处： 《物理化学学报》 2003年第4期334-337,共4页

摘　　要： 用结构、电子、空间和热力学等性质为描述符,建立了宏观性质非离子表面活性剂浊点与微观结构之间的定量结构性质关系.这些描述符包括辛醇/水分配系数lgP、分子表面积A、相对分子质量Mr、偶极矩μ-y和μ-z.通过49个非离子表面活性剂浊点的实验数值与五个性质之间的关系式,成功地预测了其他非离子表面活性剂的浊点. The quantitative structure-property relationship (QSPR) was used to predict cloud point of nonionic surfactants. Several structural, electronic, spatial and thermodynamic properties were selected as descriptors to build the relation between the macroscopic properties(such as cloud point) and microscopic structures. These descriptors include the octanol/water partition coefficient, the molecular area, relative molecular mass and molecular dipole. A general five-parameter structure-property relationship between the logarithm of cloud point and the descriptors, which was developed for a set of 49 nonionic surfactants (r(2) = 0.844), can be sued to predict cloud point of surfactants without the experimental data.

关 键 词： 定量结构性质关系 预测 非离子表面活性剂 浊点 偶极矩 分子面积

领　　域： [理学] [理学]