应用化学 ›› 1993, Vol. 0 ›› Issue (3): 57-59.

• 研究简报 • 上一篇    下一篇

由高碳醇制备O/W微小乳状液

戴乐蓉, 金毅, 李外郎   

  1. 北京大学物理化学研究所 100871 北京
  • 收稿日期:1992-07-14 修回日期:1992-11-26 出版日期:1993-06-10 发布日期:1993-06-10

PREPARATION OF OIL-IN-WATER MINIEMULSION FROM LONG CHAIN FATTY ALCOHOL

Dai Lerong, Jin Yi, Li Wailang   

  1. Institute of Physical Chemistry, Peking University, 100871 Beijing
  • Received:1992-07-14 Revised:1992-11-26 Published:1993-06-10 Online:1993-06-10

摘要: 中碳醇与高浓度的离子型表面活性剂(15%~30%)混合可制备O/W型微乳,分散质点为0.01~0.1μm。以高碳醇与低浓度离子型表面活性剂(0.6%~3%)为混合乳化剂,可制得内相体积为25%的苯乙烯在水中的微小乳状液(miniemulsion)粒子大小为0.1~0.4μm,与普通乳状液相比,具有颗粒小、分散均匀、稳定性高的特点。本文研究季胺盐等离子型表面活性剂与高碳醇混合乳化剂体系中制备微小乳状液的条件及其稳定机制。

关键词: 长链醇, 微小乳状液, 液晶

Abstract: The stable oil-in-water miniemulsion were prepared using mixed emulsifier comprising a mixture of ionic surfactants (quaternaryammonium compounds) and long chain fatty alcohols (C8 to C16) in low concentration. The chain length of the fatty alcohols, mole ratio of surfactant to fatty alcohol appeared an important factor influencing the formation of miniemulsions. The temperature of emulsification, property of oil phase and volume fraction of internal phase also affected the oil droplet size and the stability of the emulsion. The stabilization of emulsions has been interpreted in terms of the formation of the lyotropic liquid crystals.

Key words: miniemulsion, long chain fatty alcohol, lyotropic liquid crystal