月桂酸二聚甘油酯硫酸酯钠盐的制备与表面性能  

Preparation and surface properties of sodium lauric dimerized glyceryl sulfate

作　　者：史鸿鑫[1] 张辉[1] 武宏科[1] 陈立军[1] 项菊萍[1] 

机构地区：[1]浙江工业大学绿色化学合成技术国家重点实验室培育基地,浙江杭州310032

出　　处：《日用化学工业》2012年第2期93-96,共4页China Surfactant Detergent & Cosmetics

基　　金：浙江省科技厅创新团队资助项目(2011R09002-10)

摘　　要：以二聚甘油和月桂酸为原料进行酯化反应得到月桂酸二聚甘油酯,再与氯磺酸反应,经氢氧化钠中和制得月桂酸二聚甘油酯硫酸酯钠盐(SLDGS)。对中间体和产物进行了红外光谱分析,测定了产物在298 K下的表面化学性能。发现SLDGS水溶液的表面张力随着月桂酸酯化度的升高而增大,酯化度为25%时,最低表面张力为28.5 mN.m-1,临界胶束浓度为1.15 mmol.L-1;在煤油和苯中,当酯化度为30%时,SLDGS水溶液的乳化性能达到最大值,乳化时间为168 s;SLDGS水溶液的泡沫性能不佳。Laurie dimerized glycerol ester was synthesized from laurie acid and glycerol dimer, and then the intermediate ester was sulfated by chlorosulfonic acid and neutralized by NaOH solution to get the product sodium laurie dimerized glyceryl sulfate （SLDGS）. The intermediate and product were characterized by FTIR. The surface chemical properties were investigated at 298 K. The surface tensions of SLDGS aqueous solution increase with the increasing esterification degree of glycerol dimmer with laurie acid. When its esterification degree is 25% ,the cmc is 1.15 mmol · L-1 and γeme is 28. 5 mN· m^-1. When esterification degree is 30%, emulsifying property of SLDGS aqueous solution with kerosene and benzene is the best, and the emulsification time is 168 s. Foaming performance of SLPGS is not good.

关 键 词：阴离子表面活性剂 月桂酸 二聚甘油 酯化 硫酸酯盐 

分 类 号：TQ423.11[化学工程]