烷基苯磺酸盐表面活性剂的界面性能研究

Research on interface performance of alkyl benzene sulfonate surfactant

通过合成碳链长度不同的4种烷基苯磺酸盐表面活性剂,研究了复配表面活性剂质量分数、Na_2CO_3质量分数、正戊醇体积分数对油/水界面张力的影响。结果表明,复配表面活性剂质量分数在0.1%～0.3%范围内,界面张力较低;Na_2CO_3质量分数为0.6%时,界面张力较低,且最低界面张力达到超低(3.1×10^(-3)mN/m);正戊醇的最佳体积分数为1.6%。

Four kinds of alkyl benzene sulfonate surfactants with different length of carbon chain are prepared. The effects of mass fraction of surfactants, mass fraction of Naz CO3, and volume fraction of n-pentanol on the oil/water interracial tension are studied. The results show that the interfacial tension is lower when the mass fraction of surfactants is 0.1% -- 0.3 %, mass fraction of Na2CO3 is 0.6%, volume fraction of n-pentanol is 1.6%. The lowest interracial tension is 3.1 × 10^-3 mN/m.