摘要
具有双亲水基和双疏水基的gemini表面活性剂作为一类性能卓越的新型表面活性剂．近年来受到人们越来越多的关注和研究。gemini表面活性剂通常是由联结基将两个普通的表面活性剂在亲水头基或靠近亲水头基的地方通过化学键合的方式联接起来．使得这类表面活性剂具有很多特殊的性能．如表现出低的临界胶束浓度（cmc），具有低的固一液界面吸附性．较强的耐盐性能以及较高的降低油水界面张力的能力．使其在三次采油领域具有非常良好的应用前景.
The amino-sulfonate amphoteric gemini surfactants,DAS,were synthesized from dodecyl amine and sodium 2-chloroethyl sulfonate,which spacer group were made of a kind of di-chlorine substituted hydrophilic group.The structure of the product was characterized with IR.The surface activity and oil-water interface tension of DAS were studied.The experiment results showed that the amphoteric gemini surfactants had good surface activity exceeding traditional surfactants.The cmc of the DAS was 6.9×10-5mol/L and 8.0 ×10-5mol/L at 25℃ and the corresponding surface tension was 25.01mN/m and 26.17mN/m.The DAS could reduce effectively the oil-water interface tension,since the molecule of the DAS showed a trend of adsorption on the interface between oil and water.The results of oil displacement test research showed that this kind of gemini surfactant could improve recovery factor by 30%.
出处
《精细与专用化学品》
CAS
2009年第21期25-27,共3页
Fine and Specialty Chemicals
