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Irina S. Ryzhkina, Kristina A. Muravtseva, Irina S. Dokuchaeva, Larisa A. Kostina, Lyaisan
I. Murtazina, Mikhail Ya. Melnikov
Structure and
properties of water-ethanol systems
Abstract
Abstract. Self-organization, specific
electrical conductivity, UV absorption spectra and fluorescence of aqueous
solutions of ethyl alcohol with a concentration of 100 to 1% vol. alcohol were
studied. It was shown that as the concentration of alcohol decreases structural
rearrangements occur in solutions, accompanied by non-monotonous changes in the
nature, the size of the formed particles, and their percentage content. It was
found that structures with a size of hundreds of nm and a negative ζ-potential (domains) reach the highest content in the range of
60-30% vol. alcohol. In this range of alcohol concentration, a relationship
between the non-monotonic concentration dependences of the size of domains, ζ-potential, the specific electrical conductivity, and fluorescence
intensity (I340) of systems was established, indicating that
water-alcohol solutions behave as self-organized dispersed systems.
Key words: water-ethanol systems,
self-organization, dispersed phase, specific electrical conductivity, UV
absorption spectra, fluorescence
Copyright (C) Chemistry Dept., Moscow State University, 2002
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