含氮硼酸酯表面活性剂的合成及表面活性.pdf

全国第十三次工业表面活性剂研究与开发会议 含氮硼酸酯表面活性剂的合成及表面活性 * 王海鹰 李斌栋 翟羽佳 吕春绪 (南京理工大学化工学院 江苏 南京 210094) 摘要: 以月桂酸 N-(2-羟乙基) 乙二胺 硼酸和二乙醇胺为原料 合成了咪唑啉硼酸酯(简称 IBE)和咪唑啉醇胺硼 酸酯(简称IBE-A) 并比较了2 种硼酸酯的抗水解 表面张力等性能 考察了IBE-A 与十二烷基苯磺酸钠(LAS)复 配协同效应 结果表明 氮原子的引入有效地增强了硼酸酯抗水解性能 其中 IBE-A 具有很好的抗水解性能 随 pH 增加 IBE 和 IBE-A 临界胶束浓度 CMC 和 CMC 下降 在中性及碱性条件下 IBE-A 临界胶束浓度 CMC 为 -3 -1 -1 (1.20~1.35)×10 mol L CMC 为(31.1~31.4)mN m IBE-A 和LAS 有较强的复配协同效应 当n IBE-A : nLAS=4:6 -5 -1 -1 -3 -1 时 CMC 为 3.16×10 mol L CMC 为29.6mN m 其中CMC 分别是IBE-A 水溶液CMC(1.35 10 mol L ) -3 -1 和LAS 水溶液CMC(1.14 10 mol L ) 的1/43 和1/36 关键词 硼酸酯 咪唑啉 抗水解 复配 Synthesis and Surface-Activity Properties of Borate Ester Surfactant with Nitrogen WANG Hai-ying, LI Bing-dong, ZHAI Yu-jia, Lü Chun-xu (School of chemical engineering, Nanjing University Of Science Technology, Nanjing, 210094,China) Abstract Imidazoline borate IBE and imidazoline alkylol amine borate IBE-A were synthesized by lauric acid, N-(2- hydroxyethyl) ethylenediamine, boric acid and Diethanolamine. The anti- hydrolysis ability , surface tension,etc. of the borates were measured, and the combination effect of IBE-A/LAS on surface activity was also studied. The result showed that the introduction of N on the structure of borates molecules was benefit to anti-hydrolysis ability improvement of them. IBE-A had stron