Page 147 - 《精细化工》2020年第8期

第 37 卷第 8 期 精 细 化 工 Vol.37, No.8
202 0 年 8 月 FINE CHEMICALS Aug. 2020

表面活性剂
助表面活性剂及油水比对微乳液相行为的影响

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王 娩，陈 爽 ，刘会娥，宁腾飞，于云飞，刘妍汝
〔中国石油大学（华东） 化学工程学院，山东 青岛 266580〕

摘要：以脂肪醇聚氧乙烯醚-9（AEO-9）为表面活性剂，NaCl 为无机盐，正辛烷或柴油为油相，考察了正
丁醇、异丁醇和仲丁醇 3 种助表面活性剂及其含量对微乳液相行为的影响。结果表明，随着助表面活性剂
含量的增加，微乳液体系相态由 Winsor Ⅰ经 Winsor Ⅲ到 Winsor Ⅱ型转变。对正辛烷微乳液体系，正丁
醇、异丁醇和仲丁醇所对应的微乳相最大体积分数分别为 91.63%、80.00%和 65.49%；对柴油微乳液体系，
对应的微乳相最大体积分数分别为 68.42%、68.29%和 63.33%，3 种助表面活性剂微乳液体系对正辛烷的增
溶性能更好。通过醇度扫描实验，对每种助表面活性剂和油相分别筛选出 Winsor Ⅰ和 Winsor Ⅲ型微乳液
配方，考察了油水体积比对微乳液相行为的影响。发现随着油水体积比的增大，所有体系最终均变为 Winsor
Ⅰ型；初始为 Winsor Ⅲ型的体系转变为 Winsor Ⅰ型所需的油水比更大。
关键词：表面活性剂；助表面活性剂；微乳液；油水体积比；相行为
中图分类号：O648.23 文献标识码：A 文章编号：1003-5214 (2020) 08-1645-08

Effect of cosurfactant and oil/water volume ratio on the
phase behavior of microemulsion

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WANG Mian, CHEN Shuang , LIU Huie, NING Tengfei, YU Yunfei, LIU Yanru
[College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, China]

Abstract: The effects of three cosurfactants (n-butanol, isobutanol and 2-butyl alcohol) and their contents
on the phase behavior of microemulsion were investigated, herein, the microemulsion consisted of fatty
alcohol polyoxyethylene ether (AEO-9) as surfactant, NaCl as inorganic salt, n-octane or diesel oil as oil
phase. The results showed that with the increase of the content of cosurfactants, the phase behavior of the
microemulsion system changed from Winsor Ⅰ through Winsor Ⅲ to Winsor Ⅱ. The maximum volume
fraction of the n-octane microemulsion phase system corresponding to n-butanol, isobutanol and 2-butyl
alcohol was 91.63%, 80.00%, and 65.49%, respectively. While the maximum volume fraction of the
corresponding diesel microemulsion phase was 68.42%, 68.29%, and 63.33%, respectively, suggesting that
three cosurfactants microemulsion systems had better solubilization properties for n-octane. The
formulations of Winsor Ⅰ and Winsor Ⅲ microemulsion were screened out for each cosurfactant and oil
phase by alcohol scanning experiments. And the effect of oil/water volume ratio on the phase behavior was
studied. It was found that with the increase of the oil/water volume ratio, the final phase type of
microemulsion was Winsor Ⅰ. The microemulsion system of initial Winsor Ⅲ needed lager oil/water
volume ratio to change into that of Winsor Ⅰ.
Key words: surfactant; cosurfactant; microemulsion; oil/water volume ratio; phase behavior

[2]
微乳液通常是由两种不相溶流体（油和无机盐 散体系 。微乳液凭借自身的优良特性广泛应用于
[1]
[3]
[4]
[5]
水溶液）在表面活性剂 和助表面活性剂的作用下 三次采油 、食品工业 、化妆品 、含油污染土壤
[6]
形成的热力学稳定、光学上各向同性的宏观均匀分 处理 等领域。微乳液的相行为规律对微乳液应用

收稿日期：2020-03-26; 定用日期：2020-05-11; DOI: 10.13550/j.jxhg.20200244
基金项目：山东省自然科学基金（ZR2017MB015）；重质油国家重点实验室资助项目（SLKZZ-2017002）
作者简介：王 娩（1994—），女，硕士生，E-mail：1655449400@qq.com。联系人：陈 爽(1973—)，女，副教授，E-mail：chsh1030@163.com。