摘要
用基本上是自发乳化的方法制备了极稳定的乳状液和微小乳状液,考察了形成微小乳状液的条件,研究了混合表面活性剂(乳化剂)组成、乳化温度、乳化剂与油相重量比对微小乳状液形成的影响。
Stable oil-in-water emulsions and miniemulsions are prepared by essentially spontanecus emulsification by using mixed surfactants systems Tween80/Sprn80, Tween80/Span60, and Tween80/Span80/triethanolamine/oleic acid at temperatures ranged 30—70℃.The effects of composition and HLB value or mixed emulsifiers, ratio of emulsifier to oil phase (liquid paraffin) , and temperature on the particle size and the 'maximum amonl of solubilizod water' of these emulsions ( i.e. the water content in the systems at the moment of transition from a blue opalescent solution to a milky white O/W emulsion when water is gradually added) are studied and discussed, and the conditions for miniemuisions to be formed are presented. The miniemulsions (and emulsions)prepared under these conditions with 5％ emulsifier are very stable, the particle size (0.1—1.0μm) of both the original and diluted up to 100 times (the emulsifier concentration is as low as 0.05％ in this case) miniemulsions are practically kept unchanged at long standing (up to 60—80 days) at ambient temperatures.
出处
《油田化学》
CAS
CSCD
北大核心
1992年第4期352-356,共5页
Oilfield Chemistry
基金
国家自然科学基金
关键词
乳浊液
制备
形成
乳化剂
Mimemulsions, Emulsions, Preparation, Conditions of Formation
