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Ethanol–water mixtures : Ultrasonic, Brillouin scattering and Molecular Dynamics study (CROSBI ID 179226)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Mijaković, Marijana ; Kežić, Bernarda ; Zoranić, Larisa ; Sokolić, Franjo ; Asenbaum, Augustinus, Pruner, Cristian ; Emmerich, Wilhelm ; Perera, Aurelien Ethanol–water mixtures : Ultrasonic, Brillouin scattering and Molecular Dynamics study // Journal of molecular liquids, 164 (2011), 1-2; 66-73. doi: 10.1016/j.molliq.2011.06.009

Podaci o odgovornosti

Mijaković, Marijana ; Kežić, Bernarda ; Zoranić, Larisa ; Sokolić, Franjo ; Asenbaum, Augustinus, Pruner, Cristian ; Emmerich, Wilhelm ; Perera, Aurelien

engleski

Ethanol–water mixtures : Ultrasonic, Brillouin scattering and Molecular Dynamics study

New ultrasonic and hypersonic measurements of the speed of sound in aqueous ethanol mixtures are presented, particularly in the temperature and ethanol-concentration domains of the maximum of sound. Molecular Dynamics studies indicate that these mixtures show aggregation of ethanol molecules in the low ethanol mole fraction x b 0.2, bicontinuous-like phase around x = 0.5, and weak water clustering above x = 0.8. The resulting micro-heterogeneity is seen to affect the long range part of all the correlation functions of the aggregating species. Nevertheless, simulation results help understanding the general trends seen in the experimental results: it is the structural change between ethanol's clustering and water- ethanol micro- segregation that corresponds to the maximum observed in the speed of sound around x = 0.15.

Aqueous Mixtures ; Ultrasonic Hypersonic Simulation ; Water Ethanol

U sveščiću 1/2 objavljeni su odabrani radovi prezentirani na skupu EMLG/JMLG annual meeting "Complex liquids : Modern trends in exploration, understanding and application", održanom od 05.-09.09.2010.

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Podaci o izdanju

164 (1-2)

2011.

66-73

objavljeno

0167-7322

1873-3166

10.1016/j.molliq.2011.06.009

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Fizika

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