Abstract
It was recently demonstrated that nano-structures were present in water/ethanol/oil systems, where the oil was either octanol or fragrance mols. The goal of the present work is to check if such structures exist also in other, related systems and if a general concept can be deduced from these observations. To this purpose, natural and synthetic mosquito repellent mols. were investigated, which ...
Abstract
It was recently demonstrated that nano-structures were present in water/ethanol/oil systems, where the oil was either octanol or fragrance mols. The goal of the present work is to check if such structures exist also in other, related systems and if a general concept can be deduced from these observations. To this purpose, natural and synthetic mosquito repellent mols. were investigated, which represent nearly all repellents used on the market. For the ternary water/alc. (ethanol or isopropanol)/repellent systems ternary phase diagrams were established. The presence and the ordering of the nano-droplets were checked and characterized with dynamic and static light scattering and cond. measurements. Based on these results it can be concluded that a nano-ordering with generally an org. continuum exists in hydro-alc. com. mosquito repellents, and thus that these systems are not simply mol. solns. This might have a consequence for diffusion processes in the skin.
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