有机同系物表面张力递变规律研究

Regularity of surface tensions for homologous organic compounds

以有机同系物结构重复单元数值连续变化为模型 ,获得了描述有机同系物表面张力递变规律的数学表达式 :σ=(a0 +a1n +a2 n2 ) / (1+b2 n2 ) ,其中a0 ,a1,a2 ,b2 均为常数 ,n为结构重复单元数值 ,σ为同系物的表面张力 .通过非线性回归分析 ,得到回归方程 .结果表明 ,各类有机同系物的表面张力与重复单元数值满足上述关系式 。

With the model that the number of repeating units of the homologous series varies successively, they were able to described as the following equations: σ=(a 0+a 1n+a 2n 2)/(1+b 2n 2) ,where a 0,a 1,a 2,b 2 all refer to the constants, n to the number of repeating units , σ to the surface tensions of homologous organic compounds series. Significant correlation was found between the surface tension of homologous organic compounds series and their number of repeating units in this models.