醇醚丙酸盐表面活性剂的合成及表面活性  

Synthesis and surface activity of alcohol ether propionate surfactants

作　　者：王军[1] 杨许召[1] 苗进辉 邹文苑[1] 陈翔[1] 

机构地区：[1]郑州轻工业学院河南省表界面科学重点实验室,河南郑州450002

出　　处：《日用化学工业》2014年第9期481-485,共5页China Surfactant Detergent & Cosmetics

基　　金："十二五"国家科技支撑计划资助项目(2013BAC01B04)

摘　　要：以脂肪醇(辛醇、癸醇和十二醇)、脂肪醇聚氧乙烯醚(AEO7)和丙烯酸叔丁酯等为原料,经过加成反应和皂化反应合成了4种醇醚丙酸盐,用FTIR,1HNMR及ESI-MS对产物进行了结构表征。优化后的加成反应工艺条件为:n(脂肪醇或醇醚)∶n(丙烯酸叔丁酯)∶n(甲醇钠)=1∶3∶0.02,50℃下反应6 h。对4种醇醚丙酸盐的表面活性测定表明:均表现出了优良的表面活性;亲水基相同时,其临界胶束浓度(cmc)和相应的表面张力(γcmc)及分子最小横截面积(Amin)均随碳链的增长而逐渐减小,而饱和吸附量(Γmax)和吸附效率(pc20)则随碳链的增长逐渐增大;分子中引入乙氧基后,其cmc,γcmc和Amin增大,而Γmax和pc20减小。Four kinds of fatty alcohol ether propionate were synthesized via addition and saponification with fatty alcohol （ octanol, decanol and dodecanol）, fatty alcohol polyoxyethylene ether （ AEO7 ） and tert - butyl acrylate as raw materials. Structure of the products was characterized by FTIR, 1HNMR and ESI - MS methods. The addition reaction parameters were optimized via a series of experiments as follows： n （fatty alcohol （ AEO7 ） ） ： n （ tert - butyl - acrylate） ： n （ sodium methoxide） = 1 ： 3 ： 0.02 ; reaction temperature, 50 ℃; reaction time,6 h. The products show good surface activity. With increasing of the carbon chain length,their cmc, γcmc and A mi. decreases while Fmax and pc20 increases. However, the results were reversed as the fatty alcohol molecules are ethoxylated.

关 键 词：醇醚丙酸盐 脂肪醇 脂肪醇聚氧乙烯醚 丙烯酸叔丁酯 合成 表面活性 

分 类 号：TQ423.11[化学工程]