十二烷基苯磺酸钠/聚氧乙烯(23)月桂醚复配体系性能的研究

Properties of Mixed System of Sodium Dodecyl Benzene Sulfonate and Polyoxyethylene( 23 ) Lauryl Ether

在35℃时通过表面张力法研究了阴离子表面活性剂十二烷基苯磺酸钠(SDBS)和非离子表面活性剂聚氧乙烯(23)月桂醚(Brij35)复配体系在不同配比下的临界胶束浓度(CMC)和降低表面张力效率方面的作用。结果表明:SDBS和Brij35的物质的量比为3∶7时,降低表面张力的效率最高,其CMC为0.2 mmol/L,明显低于单一组分;并在总物质的量浓度一定时,测定了复配体系的稳定性和润湿性。

Critical micelle concentration（ CMC） of different proportion as well as the efficiency of reducing surface tension of the mixed system of anionic surfactant sodium dodecyl benzene sulfonate（ SDBS） and non-ionic surfactant polyoxyethylene（ 23） lauryl ether（ Brij35） has been investigated by surface tension measurement at 35 ℃. The results show that the efficiency of reducing surface tension is the most obvious when the molar ratio of SDBS and Brij35 is about 3∶ 7. In this ratio CMC is 0. 2 mmol / L,which much lower than that of the single one. Stability and wettability of the mixed system has also been measured when the total amount of substance concentration is fixed.