阴离子型双子表面活性剂GMAS-14的合成与性能

Synthesis and Properties of Anionic Gemini Surfactant GMAS -14

马喜平 焦文超 王晓磊 郭晓丹 代磊阳 肖继斌

MA Xiping JIAO Wenchao WANG Xiaolei GUO Xiaodan DAI Leiyang XIAO Jibin

本文以乙二胺、溴代十四烷和顺丁烯二酸酐等为主要原料，通过亲核取代、开环、中和等系列反应合成了一种阴离子型双子表面活性剂 GMAS-14，采用红外光谱IR）对中间体N, N' - 双十四烷基乙二胺和目标产物GMAS-14进行了结构表征，并测试了GMAS-14的表面活性和起泡性能。红外光谱结果表明：合成的中间体及终产物的结构与设计相一致，可以确定合成的物质即为目标产物。GMAS-14性能测试表明：在25℃时，GMAS-14的临界胶束浓度c cmc 为0.048 mmol/L，对应的表面张力（γcmc）为27.5 mN/m；当临界胶束浓度下，10mL的GMAS-14溶液的最大起泡体积为23mL，泡沫半衰期为590 s，表现出良好的起泡与稳泡性。图7 表1 参12

An anionic gemini surfactantGMAS-14was synthesized via series of reactions, such as nucleophilic substitution, ring opening and netrualization reaction by using ethylenediamine, 1-bromotetradecane and maleic anhydride as raw materials. The structure of N, N' -（2-tetradecyl）-ethylenediamine and GMAS-14was characterized by infrared spectroscopy（IR）, and the surface activity and foaming properties of GMAS-14were tested. The results of IR showed that，the structure of the intermediate and final products were consistent with the design, and it was determined that the substances were the target products. The performance test of GMAS-14 indicated that, at the temperature of 25℃, the critical micelle concentration （c cmc）of the GMAS- 14was of 0.048 mmol/L and the surface tension（γ cmc）of the GMAS- 14was of 27.5 mN/m. At the critical micelle concentration, the maximum foam volume ofGMAS-14solution of 10mL was of23mL, and the half-life period of the foam was 590 s, presenting good foaming properties.