POSITRON STUDIES ON REVERSE MICELLAR SYSTEMS OF AOT ISOOCTANE WATER

AOT/Isooctane and water/AOT/Isooctane systems have been studied by pos itron annihilation techniques. Studies of the binary system show that AOT is a strong positron scavenger and support the idea of polydispers e aggregates. Results, for the ternary system, indicate the presence o f monomers, even when aggregates are present, and show that Ps is in a water-free region. The effects of the addition of nitrobenzene, sodiu m nitrobenzoate and 4-phenylbutyric acid to the ternary system are stu died. Ps reveals high reactivity towards nitrobenzene which is shown t o be present both in isooctane and inside the aggregates.