Abstract

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

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