石油磺酸盐低极性组分的分离及其有效成分的结构与界面张力关系的研究

Isolation of low polarity components of petroleum sulfonate and study on the relationship between structure and interfacial tension of active components

以柱层析法用不同极性洗脱剂将石油磺酸盐低极性组分分离成a、b、c、d四个组分,界面张力测定表明,仅有b组分能达到超低界面张力,是石油磺酸盐中真正起作用的组分。该组分的红外光谱、质谱、核磁共振表明,b组分的平均相对分子质量为556,平均碳数为32.43~36.32,支化度为0.225,芳香度为0.213,平均芳碳数(CA)=6.9~7.7,平均饱和碳数(CS)=25.53~28.62,平均甲基数(NCH3)=4.7~5.3,平均每个分子含有1~2个苯环,平均每个烷基侧链含有25~29个碳原子,且平均每个烷基链含有4个支链。

The low polarity component is sequentially eluted into four different polar components by column chromatography.Interfacial tension measurement illustrates that only component b shows the ultra-low interfacial tension,it’s the really active component of the petroleum sulfonate.The FTIR,MS and NMR suggests that the average relative molecular mass is 556,the average carbon number is 32.43~36.32,the degree of branching is 0.225,the aromaticity is 0.213, average aromatic carbon number is 6.9~7.7.The saturated carbon number is 25.53~28.62,the average methyl number is 4.7~5.3.There are 1~2 benzene ring,25~29 carbon,and 4 branched chain in each molecule.