细小乳状液的制备及其自发乳化

本文介绍了制备细小乳状液（粒径约为0．1～1μm）的四种方法：（1）乳化剂（离子型表面活性剂与长链醇的混合物）在水中法．（2）相转变温度法。（3）反相乳化法。（4）D相乳化法。对影响细小乳状液形成的条件进行了讨论，并对乳化的机制作出说明。还对自发乳化作用作了介绍。

细小乳状液的制备

For preparing O/W miniemulsions containing soybean oil and silicone oil, three methods, phase inversion emulsification, D-phase emulsification, reformed D-phase emulsification were tested by using Brij92, 97, 98 and Tween 80, 85, 60, 20 and Span 80, 60 mixed surfactants. It was found that the O/W miniemulsions of soybean oil and silicone oil can not be formed by phase inversion emulsification method, but can be formed by the two other methods. The results of emulsification showed that if gel emulsion, in which fine oil droplets disperse in continuous phase with high surfactant content, appears during the emulsification process, the O/W miniemulsions can be formed by simply diluting with water.

石蜡细小乳状液的制备

以吐温 60、司本 60以及两种助表面活性剂作乳化剂 ,应用HLB理论制得 O/ W 型稳定石蜡细小乳状液。其中石蜡 2 0 .0分、吐温 60为 1 .6分、司本 60为 1 .4分、两种助表面活性剂共 2 .0分、余量为水 (质量比 )。经激光粒度分析仪检测该乳状液平均粒径为 0 .682 μm。而仅用吐温 60、司本 60作乳化剂 ,只制得石蜡普通乳状液。

细小乳状液的研制

介绍了用自然乳化法制备细小乳状液的方法和结果。