Abstract:

The authors studied the nonionic system water/dodecane/butanol/ polyoxyethylene (10) oleyl alc., and water/dodecane/pentanol/ polyoxyethylene (8) lauryl alc. A pronounced increase in cond. may be the result of a microstructural change, not an inversion from W/O to O/W. Microstructural evolutions of two model systems along two different diln. lines, where the wt. ratios of surfactant/alc./oil are 2:1:1 and 4:3:3, resp., are similar. The inversion from W/O to O/W microemulsion should occur at a water content much higher than 20-30 wt%. (c) 1998 Academic Press. [on SciFinder(R)]