脂肪醇聚氧乙烯聚二甘油醚的合成与性能

Synthesis and Properties of Fatty Alcohol Polyoxyethylene Polydiglycerol Ethers

吕成远 刘 平 张晓东 陈照军 杜 辉

Lü Chengyuan LIU Ping ZHANG Xiaodong CHEN Zhaojun DU Hui

为了进一步改善脂肪醇聚氧乙烯醚类非离子表面活性剂的表面活性， 以脂肪醇聚氧乙烯醚（AEO）和甘油为主要原料， 分步合成了系列非离子表面活性剂脂肪醇聚氧乙烯聚二甘油醚， 并研究了该系列表面活性剂的表面活性、 乳化性能和泡沫性能。研究结果表明， AEO7 聚二甘油醚和 AEO9 聚二甘油醚的浊点相比于其对应的AEO 均提高了 3℃； 相同条件下， 系列脂肪醇聚氧乙烯聚二甘油醚的表面张力均略高于其对应的 AEO， 其中AEO3 聚二甘油醚、 AEO5 聚二甘油醚、 AEO7 聚二甘油醚和 AEO9 聚二甘油醚的临界胶束浓度值分别为 3.16×10-4 、1.00×10-3、 3.14×10-3和 5.01×10-3 mol/L， 均大于其对应 AEO的； 泡沫性能和乳化性能分析显示脂肪醇聚氧乙烯聚二甘油醚具有优良的泡沫稳定性和乳化性能， 其中 AEO9 聚二甘油醚的泡沫稳定性达 82.14%。图 8表 4参 15

In order to improve the surface activity of fatty alcohol polyoxyethylene ether（AEO）nonionic surfactants， fatty alcohol polyoxyethylene polydiglycerol ethers were synthesized by two-step processing using AEO and glycerine as main raw material， and its surface activity， emulsification property and foam property were measured and analyzed. The results of performance test showed that the turbidity point of AEO7 -polydiglycerol ethers and AEO9 -polydiglycerol ethers both increased by 3℃ compared with the corresponding AEO. The surface tension of fatty alcohol polyoxyethylene polydiglycerol ethers solution was all slightly higher than that of the corresponding AEO under the same condition. The critical micelle concentration of AEO3 -polydiglycerol ethers，AEO5 -polydiglycerol ethers， AEO7 -polydiglycerol ethers and AEO9 -polydiglycerol ethers were 3.16×10-4 ， 1.00×10-3 ， 3.14×10-3 and 5.01 × 10-3 mol/L，respectively，which were all larger than that of the corresponding AEO. The analysis of foam property and emulsifiability indicated that the fatty alcohol polyoxyethylene polydiglycerol ethers had excellent foaming stability and emulsification property， among which the foaming stability of AEO9-polydiglycerol ethers was 82.14%.