醇醚糖苷柠檬酸单酯二钠盐的合成及性能研究  

Preparation and performance of disodium mono( alkyl polyoxyethylene ether) glucosidyl citrate

作　　者：白亮[1] 杨秀全[1] 张军[1] 周媛[1] 

机构地区：[1]中国日用化学工业研究院,山西太原030001

出　　处：《日用化学工业》2014年第8期432-435,共4页China Surfactant Detergent & Cosmetics

摘　　要：采用间接酯化法以柠檬酸和乙酸酐为原料,先合成柠檬酸酐,再与醇醚糖苷(含有过量未反应的脂肪醇醚)以摩尔比为1∶1,90℃下反应2 h合成了醇醚糖苷柠檬酸单酯(醇醚糖苷转化率高达96%以上),再用NaOH溶液将其中和制得醇醚糖苷柠檬酸单酯二钠盐(MAEG-EC-X-Na)。采用红外光谱对其结构进行了表征。同时对产物的物化性能进行了测定,结果表明,随着醇醚糖苷原料中醇醚含量的增加,柠檬酸单酯二钠盐的cmc值、起泡性能、泡沫稳定性逐渐减小,而γcmc变化不明显;NaCl对MAEG-EC-70-Na与AES(脂肪醇聚氧乙烯醚硫酸钠)和CAO(氧化胺)分别按一定比例复配后体系的黏度有较大影响。Via indirect esterification, citric anhydride was prepared with citric acid and acetic anhydride as starting materials, and then the citric anhydride was reacted with alkyl polyoxyethylene ether glucoside （containing excess of unreacted alkyl polyoxyethylene ether） at conditions as mole ratio 1：1 and temperature of 90 ~C for 2 h to get mono （ alkyl polyethethylene ether） glucosidyl citrate. Conversion of the esterification achieves 96% and higher. Then the mono （ alkyl polyethylene ether） glueosidyl citrate was neutralized with NaOH to get the product disodium mono （alkyl polyoxyethylene ether） glucosidyl citrate （simply expressed as MAEG - EC - X - Na）. Chemical structure of MAEG - EC - X - Na was characterized by IR. Physicochemical properties of the product were measured. Results showed that：as the content of the alkyl polyoxyethylene ether in the raw material increases, the cmc value, foaming power and foam stability of MAEG - EC - X - Na decreases, while Tc^c does not change significantly;NaC1 has rather big influence on viscosity of blend systems composed of MAEG- EC -70- Na,AES and amine oxide.

关 键 词：醇醚糖苷柠檬酸单酯二钠盐 合成 表面活性 泡沫性能 

分 类 号：TQ423.11[化学工程]