磺基甜菜碱表面活性剂的合成及其性质研究  

The Synthesis and Properties of Sulphobetaine Surfactants

作　　者：郑延成[1] 黄倩[1] 王龙涛[1] 

机构地区：[1]长江大学化学与环境工程学院,湖北荆州434023

出　　处：《长江大学学报（自科版）（上旬）》2010年第3期30-33,共4页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

基　　金：国家重点基础研究发展规划项目(G19990225)

摘　　要：以烷基叔胺和丙磺酸内酯合成了碳数分别为12和16的磺基甜菜碱表面活性剂,即十二烷基磺基甜菜碱(SB12)和混合十六烷基磺基甜菜碱(SB16),对其结构和性能进行了表征。探讨了无机盐对十二烷基硫酸钠(SDS)与磺基甜菜碱混合溶液的临界胶团浓度(cmc)及表面张力的影响,考察了两性表面活性剂与阴离子表面活性剂间的协同效应。试验结果表明,随疏水基烷基碳数增加,两性表面活性剂的cmc降低。无机盐对降低两性表面活性剂cmc的作用较小,同时还发现无机盐对SB16的cmc的影响比SB12要大,相比而言,二价盐比一价盐对两性表面活性剂的活性影响程度更大。两性表面活性剂与阴离子活性剂SDS之间有较好的协同作用。Two sulphobetaine surfactants were synthesized by the reaction of long-chain amines with propane sultone,Their critical micelle concent ration(cmc)values were determined and the effect of concentration of two inorganic salt on cmc were discussed.Synergisms between the mixed surfactant system of sulphobetaine surfactants /dodecyl sulphate(SDS)were investigated.The results show that the effect of inorganic salt on cmc of sulphobetaine is small,and the effect of Ca2+ on cmc for the mixed system is better than that of Na+.The equimolar mixtures of sulphobetaine surfactant and SDS have strong synergism in the mixed micelle.SB12 has better water-solubility than SB16.Sulphobetaine surfactants have good resistance to salt.

关 键 词：两性表面活性剂 十二烷基硫酸钠 无机盐 临界胶团浓度 协同作用 

分 类 号：TQ423[化学工程]