十二烷基苯磺酸钠-聚醚混合表面活性剂体系增效作用的研究  

Study of synergic effect of LAS-polyether blend surfactant system

作　　者：南海明[1] 张高勇[1] 王红霞 

机构地区：[1]中国日用化学工业研究院,山西太原030001 [2]罗地亚中国投资有限公司,上海201108

出　　处：《日用化学工业》2007年第5期290-292,297,共4页China Surfactant Detergent & Cosmetics

基　　金：国家自然科学基金重点资助项目(20233010)

摘　　要：以K12表面张力仪为主要手段研究了十二烷基苯磺酸钠(LAS)和聚醚组成的混合表面活性剂体系的增效作用。实验表明,十二烷基苯磺酸钠(LAS)和聚醚组成的混合表面活性剂体系的临界胶束浓度(cmc)大大低于任一单一组分溶液的cmc,且在其中一组分的溶液中加入少量的另一组分即可使体系的cmc大为降低。在很大的配比范围内cmc都维持在一较低水平且随配比改变变化的幅度不大。此外,混合表面活性剂体系在形成胶束能力以及降低表面张力效率方面都显示出较强的增效作用。但在降低表面张力能力方面,未显示出增效作用。Synergic effect of LAS- polyether blend surfactant system was studied using surface tensiometer as the main measure. The cmc of the blend system is much lower than that of any single component of the blend system. The addition of a small amount of any component to the other will reduce the cmc significantly. In a quite wide range of the ratio between the two components, the cmc can be maintained at a rather low level. That means the change of the ratio between the two components will cause less change of the cmc level. The blend system shows strong synergic effect with respect to the capability of micelle formation and the efficiency of surface tension reduction; but the blend system shows no synergic effect with respect to the capability of surface tension reduction.

关 键 词：表面活性剂 混合体系 增效 

分 类 号：TQ423[化学工程]