双烷基双硫酸酯钠表面活性剂的合成  

Synthesis of Disodium 1,ω-Di-n-alkyl 1,ω-Disulfate Surfactants

作　　者：刘平[1] 李阳[1] 安静仪[2] 

机构地区：[1]中国石油大学石油工程学院,山东东营257061 [2]中国科学院理化技术研究所,北京100080

出　　处：《精细化工》2008年第12期1179-1182,共4页Fine Chemicals

基　　金：国家高科技研究发展计划(863)专题(2006AA09Z306)~~

摘　　要：以1,2-环氧十四烷烃和几种短碳链二醇为原料,合成了系列二烷基二羟基化合物,然后用氯磺酸作为磺化剂制得5种疏水链相同、连接基团不同的双烷基双硫酸酯钠表面活性剂,并用核磁共振氢谱(1HNMR)、傅立叶变换红外光谱(FTIR)和电喷雾质谱(ESI-MS)对其结构进行了鉴定。用Wilhelmy-Plate法测定了25℃时,5种表面活性剂水溶液的表面张力。实验发现,双直链烷基双硫酸酯钠有很低的临界胶束浓度约10-5mol/L,表明该类表面活性剂具有较好的表面活性。Di-n-alkyl diol intermediates were synthesized from 1,2-epoxytetradecane and short-chain diols, and five highly pure di-n-alkyl disulfate surfactants with different spacer groups were synthesized by sulfation of the intermediates with chlorosufonic acid. Their structures were characterized by ^1HNMR, FTIR and ESI - MS methods. The critical micelle concentration （CMC） and the surface tension at CMC （YCMC） of the surfactants in aqueous solution at 25℃ were mearsured by means of the Wilhelmy-Plate. The CMC values of this series of surfactants are very low, reaching the order of magnitude of 10^-5 mol/L. Experimental results show that these surfactants have high surface activities.

关 键 词：双烷基双硫酸酯钠 CMC GEMINI表面活性剂 

分 类 号：O647.2[理学—物理化学]