摘要
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.
出处
《化学试剂》
CAS
北大核心
2015年第11期993-996,共4页
Chemical Reagents
基金
河南省科技计划重点项目(102102310298)
平顶山学院中青年骨干教师资助计划(2012)
关键词
表面张力
临界胶束浓度
复配体系
surface tension
critical micelle concentration
mixed system