Abstract
KCl-induced phase separation phenomenon in 1-propanol aqueous solution has been studied by means of small angle (SANS) and quasi-elastic neutron scattering measurements. The significant increase of SANS intensity by the addition of KCl is attributed to the aggregate of clusters, of which the fractal nature of dimension 1.8–1.9 is found. The motion of water molecules is much suppressed in the 1-propanol–water solution, while it is slightly recovered by the addition of KCl. The aggregate of clusters and liquid–liquid phase separation are discussed in relation to the motion of water molecules.
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