脂肪酸双酯双磺酸盐型双子表面活性剂的合成及性能  

Synthesis and Properties of Fatty Dicarboxylic Acid Diester Disulfonate Gemini Surfactant

作　　者：韩利娟[1,2] 李丽娜[2] 罗平亚[1] 叶仲斌[1,2] 樊力[2] 陈洪[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]西南石油大学化学化工学院,四川成都610500

出　　处：《精细化工》2012年第4期322-325,346,共5页Fine Chemicals

基　　金：四川省青年基金资助项目(08ZQ026-001)~~

摘　　要：以脂肪酸、二甘醇、氯磺酸为原料,经酯化、磺化反应制备了4种二甘醇双(α-磺酸钠)烷基羧酸酯表面活性剂。用红外光谱、元素分析对产物进行了表征,并对其表面活性和聚集行为进行了研究。结果表明,该类脂肪酸双酯双磺酸盐型双子表面活性剂比十二烷基硫酸钠的临界胶束浓度低1～2个数量级和更强的降低表面张力的能力。稳态荧光猝灭实验表明,表面活性剂胶束聚集数随着烷烃链碳原子数的增加而逐渐减小。In this paper,four types of diethylene glycol di（α-sodium sulfonate） alkyl carboxylic ester surfactants were synthesized through esterification and sulfonation reaction from the starting materials of fatty acid,diethylene glycol and chlorosulfonic acid.The structures of the products were characterized by means of IR and elemental analysis.The surface activity and self-assembly behavior of the Gemini surfactants aqueous solutions were investigated.The results show that the CMC of the Gemini surfactants is lower than that of the ordinary surfactant SDS by about 1～2 order of magnitude.With the increase of the carbon atom number of hydrophobic alkyl chains,the surfactant exhibits much higher surface activity.The results of steady-state fluorescence quenching measurement show that the aggregation number of the Gemini surfactants decreases with the increase of the carbon atom number of hydrophobic alkyl chains.

关 键 词：双子表面活性剂 临界胶束浓度 表面张力 胶束聚集数 

分 类 号：TQ423[化学工程] O647.2[理学—物理化学]