欢迎访问《日用化学工业（中英文）》，今天是
日用化学工业（中英文）

日用化学工业 ›› 2022, Vol. 52 ›› Issue (7): 689-695.doi: 10.3969/j.issn.1001-1803.2022.07.001

• 基础研究 •    下一篇

SDBS/（C12-4-C12）Br2复配微乳液相行为影响因素研究

廖建军1,李华斌1,2,*(),邓金玭1,何刚1,郭程飞1   

  1. 1.成都理工大学 能源学院,四川 成都 610059
    2.成都理工大学 油气藏地质及开发工程国家重点实验室,四川 成都 610059
  • 收稿日期:2021-09-15 修回日期:2022-06-28 出版日期:2022-07-22 发布日期:2022-07-21
  • 通讯作者: 李华斌
  • 基金资助:
    中国石油天然气股份有限公司科学研究与技术开发项目(GCYHZC2018066)

Study on the influencing factors of phase behavior of SDBS/（C12-4-C12）Br2 microemulsion

Liao Jianjun1,Li Huabin1,2,*(),Deng Jinpin1,He Gang1,Guo Chengfei1   

  1. 1. College of Energy Sources, Chengdu University of Technology, Chengdu, Sichuan 610059, China
    2. State Key Laboratory of Oil and Gas Reservoir and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China
  • Received:2021-09-15 Revised:2022-06-28 Online:2022-07-22 Published:2022-07-21
  • Contact: Huabin Li

RichHTML

22

PDF (PC)

226

赞

摘要：

微乳液因其优良特性被广泛应用于三次采油、化妆品、食品工业等领域。为了探究阴/阳离子表面活性剂复配微乳液体系的相行为影响因素,研究了SDBS与（C12-4-C12）Br2的最佳摩尔比以及盐度、表面活性剂质量分数、油水比的影响。研究表明,对于SDBS-（C12-4-C12）Br2/正丁醇/NaCl/水/煤油体系,增溶参数随着SDBS与（C12-4-C12）Br2摩尔比的增加呈现先增加后减小的趋势,最终确定SDBS与（C12-4-C12）Br2的最佳摩尔比为0.7∶1。盐扫实验中,随着NaCl质量分数的增加,体系呈现出Winsor Ⅰ型→Winsor Ⅲ型→Winsor Ⅱ型的相态转变。油扫实验中,随着油水比的增加,当NaCl质量分数较低时,体系发生由胶团溶液到Winsor Ⅰ型的转变;当NaCl质量分数足够高时,体系呈现出Winsor Ⅱ型→Winsor Ⅲ型→Winsor Ⅰ型的相态转变。此外Winsor Ⅲ型微乳液形成和消失所需要的油量随着NaCl和复合表面活性剂的质量分数增加而增加。

关键词: 微乳液, 表面活性剂复配, 油水比, 相变

Abstract:

Microemulsions are widely used in tertiary oil recovery, cosmetics, food industry and other fields due to their excellent properties. By mixing anionic and cationic surfactants, a microemulsion system with excellent performance could be prepared. The factors influencing the phase behavior of the microemulsion system of mixed anionic/cationic surfactants, such as the molar ratio of SDBS to （C12-4-C12）Br2, salinity, surfactant mass fraction, and oil-water ratio, were studied. The results show that, for the SDBS-（C12-4-C12）Br2/n-butanol/NaCl/water/kerosene system, the solubilization parameter shows a trend of first increase and then decrease with the increase of the molar ratio. The optimal molar ratio of SDBS to （C12-4-C12）Br2 is 0.7∶1. In the experiments to investigate the effects of salt, the oil-water ratio was fixed to 1∶1, and the mass fractions of mixed surfactants were 2%, 3%, 4% and 5%, respectively. With the increase of NaCl mass fraction, all systems show the phase transition from Winsor Ⅰ→Winsor Ⅲ→Winsor Ⅱ. In the experiments to investigate the effects of oil, the mass fraction of mixed surfactants was fixed to 4%, and the mass fractions of NaCl were 0.50%, 1.30% and 1.65%, respectively. With the increase of the oil-water ratio, when the NaCl mass fraction was 0.50%, the system changed from micellar solution to Winsor Ⅰ type; when the NaCl mass fractions were 1.30% and 1.65%, the two systems showed the phase transition from Winsor Ⅱ→Winsor Ⅲ→Winsor Ⅰ. When the NaCl mass fraction was fixed to 1.30% and the mass fractions of mixed surfactants were 3%, 4% and 5% respectively, with the increase of the oil-water ratio, all systems showed the phase transition from Winsor Ⅱ→Winsor Ⅲ→Winsor Ⅰ. In addition, the amounts of oil required for the formation and disappearance of Winsor Ⅲ microemulsion increased with the mass fractions of NaCl and mixed surfactants.

Key words: microemulsion, surfactant mixture, oil-water ratio, phase change

中图分类号: 

  • O648.23