新型羧酸盐阴离子Gemini表面活性剂的合成及其表面活性  

Synthesis and Surface Activities of A Novel Anionic Carboxylate Gemini Surfactant

作　　者：张群 裴晓梅 李文楷 李朝旺 

机构地区：[1]江南大学化学与材料工程学院食品胶体与生物技术教育部重点实验室,江苏无锡214122

出　　处：《合成化学》2017年第10期814-817,共4页Chinese Journal of Synthetic Chemistry

基　　金：国家自然科学基金资助项目(21203078);中央高校基本科研业务费专项资金资助项目(JUSRP111A06)

摘　　要：以丙二酸二乙酯为原料,与溴代正癸烷经单边取代反应制得2-癸基丙二酸二乙酯(1);1与1,3-二溴丙烷发生双边取代反应制得四乙基二十五烷-11,11,15,15-四羧酸酯(2);2依次发生皂化、酸化及脱酸反应制得2,6-二癸基庚二酸(4);4和NaOH经酸碱中和反应合成了一种新型羧酸盐阴离子Gemini表面活性剂——2,6-二癸基庚二酸钠(5),总收率46.7%,其结构经~1H NMR,IR和MS表征。采用表面张力法研究了5的表面活性。结果表明:5具有较强的聚集能力和界面吸附能力,其cmc,γc mc,C20,Γmax和Amin分别为0.29 mmol·L^(-1),31.96m N·m^(-1),5.640μmol·m^(-2)和0.295 nm^2。2-Decyl malonate （1） was obtained by substitution of diethyl malonate with l-bromodeeane. A novel anionic Gemini surfactant, sodium 2,6-didecylheptanedioate （5） , with the overall yield of 46.7%, was synthesized through saponification, acidification and acid-base neutralization from 2, which was prepared by substitution of 1 with 1,3-dibromopropane. The structure was characterized by 1H NMR, IR and MS. The surface activities of 5 were investigated by surface tension method. The resuits showed that 5 exhibited strong aggregation and adsorption ability with cmc, γcmc, C20, Fmax and Amin of 0.29 mmol·L-1 , 31.96 mN·m -1 , 5. 640μmol·m-2 and 0. 295 nm2, respectively.

关 键 词：丙二酸二乙酯 2  6-二癸基庚二酸钠 阴离子Gemini表面活性剂 合成 表面活性 

分 类 号：O647.2[理学—物理化学]