硬脂酸单乙醇酰胺聚氧乙烯醚葡萄糖苷的合成及性能

Study on the synthesis and properties of stearic ethanolamide polyoxyethylene ether glucopyranoside

摘要:

以硬脂酸，单乙醇胺，环氧乙烷，葡萄糖为原料制备了不同环氧乙烷（EO）聚合度的硬脂酸单乙醇酰胺聚氧乙烯醚葡萄糖苷类非离子表面活性剂。该类糖苷类表面活性剂在烷基和葡萄糖分子之间引入非离子表面活性剂中常见的亲水集团，酰胺键和聚氧乙烯链，是一种烷基糖苷(APG)类衍生物。通过IR和1HNMR对产物结构进行表征，并测试了该类表面活性剂的最低表面张力(γcmc)为30~38mN∕m,临界胶束浓度（CMC）为1~10×10－5g∕ml。研究了环氧乙烷(EO)聚合度（n）对产品表面物理化学性能的影响，随着n的增加，CMC、乳化性能、吸湿保湿性能均增加。不同聚合度的产物均有很好的泡沫性能和硬水稳定性。

Abstract:

A series of stearic ethanolamide polyoxyethylene ether glucopyranoside with different polymerization degree(n) of epoxyethane (EO) were synthesized .The structure of the products were characterized by IR and 1HNMR .Surface physicochemical properties of these products were measured .The results showed that surface tension (γcmc) varied from 30~38mN∕m and critical micelle concentration (CMC) varied from 1×10-5~10×10-5g∕ml. The relationship between surface physicochemical properties of products and polymerization degree of EO were studied systematically. The application properties such as emulsifying power(with turpentine)、foaming ability、hard water stability、absorbing and keeping moisture rate improved with the increase n of EO.