Phase behaviour of microemulsions with lubricant base oil as the oil phase

✍ Scribed by Ya Lu; Ting Guo

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 132 KB
• Volume: 21
• Category: Article
• ISSN: 0954-0075
• DOI: 10.1002/ls.90

✦ Synopsis

Abstract

Appropriate surfactants and co‐surfactants were chosen to prepare a microemulsion system with lubricant base oil as the oil phase. The phase behaviour of the microemulsion at different temperatures and at different oil/water mass ratios was assessed on the basis of conductivity measurements. Microemulsions and a bi‐continuous microstructure were obtained when the oil/water mass ratio was below 0.33. An analysis of the conductivity behaviour of the microemulsions revealed that different conductive mechanisms are operative at different water contents. Activation energies (Δ__E__) were determined. The results showed that Δ__E__ increases with increasing water content. The data and the derived relationship provided a basis for preparing metalworking microemulsions. Copyright © 2009 John Wiley & Sons, Ltd.