新型阴离子表面活性剂i-C_(14)H_(29)O(EO)_3SO_3Na的合成与性质  

SYNTHESIS AND PROPERTIES OF NEW ANIONIC SURFACTANT i-C_(14)H_(29)O(EO)_3SO_3Na

作　　者：靳志强[1] 王涵慧[1] 俞稼镛[1] 

机构地区：[1]中国科学院理化技术研究所,北京100101

出　　处：《精细石油化工》2002年第5期4-7,共4页Speciality Petrochemicals

基　　金：国家重点基础研究发展规划项目 (G19990 2 2 50 3)

摘　　要：以正庚醇、氯磺酸、NaOH为原料 ,经三步反应合成了新型阴离子表面活性剂 2 戊基壬醇聚氧乙烯醚(n =3 )硫酸酯钠i C1 4 H2 9O(EO) 3 SO3 Na(II)。用IR、NMR和元素分析测定了所合成的表面活性剂的结构 ,研究了该表面活性剂的表面活性。结果表明 :聚氧乙烯链的引入 ,可以降低表面活性剂的cmc、表面张力和Krafft点 ,并在一定浓度的Na2 CO3 溶液中 ,温度为 40℃时 ,0 .2 %的表面活性剂II的水溶液与模拟油 (己烷、辛烷、癸烷、十二烷、十四烷 )The new anionic surfactant, sodium 2 pentyl nonyl alcohol polyoxyethylene ether sulfate i C 14 H 29 O(EO) 3 SO 3 Na (Ⅱ) , was synthesized from n heptanol, ethylene oxide, chlorosulfonic acid and sodium hydroxide by a three step reaction. The structure of II was identified by IR, NMR and elementary analysis. The surface activity of Ⅱ was investigated. The results show that by adding polyoxyethylene units to it, the cmc value, surface tension and Krafft point could be reduced, and in certain Na 2CO 3 concentrations, the dynamic interfacial tension between 0.2% surfactant Ⅱ water solution and simulated oils ( n C 6 H 14 , n C 8 H 18 , n C 10 H 24 , n C 12 H 26 and n C 14 H 30 ) or crude oil could reach to a very low value.

关 键 词：新型 阴离子表面活性剂 i-C14H29O(EO)3SO3Na 合成 性质 Guerbet反应 烷基醇聚氧乙烯醚硫酸酯钠 CMC 环氧乙烷 加成 

分 类 号：TQ423.11[化学工程]