The physicochem. properties of water-2,2,2 trifluoroethanol mixts. have been investigated, at 25 °C, by d., viscosity, surface tension, and relative permittivity. An anal. based on the Kirkwood theory for the dielec. polarization of mixts. has been performed and the gK correlation factor has been related to the occurrence of hydrogen bonding networks. Data on the above system have been analyzed and compared to literature data on water-ethanol mixts., to obtain information on the role that partial fluorination plays in the interactions of alcs. with water mols. As inferred from excess properties, nonideality contributions are smaller than in the corresponding water-ethanol solns. Accordingly, the extension of hydrogen bond networks and/or van der Waals contributions to the overall system stability are less significant than in simple alcs.
WATER-TRIFLUOROETHANOL MIXTURES: SOME PHYSICOCHEMICAL PROPERTIES / Gente, G.; LA MESA, Camillo. - In: JOURNAL OF SOLUTION CHEMISTRY. - ISSN 0095-9782. - STAMPA. - 29:(2000), pp. 1159-1172.
WATER-TRIFLUOROETHANOL MIXTURES: SOME PHYSICOCHEMICAL PROPERTIES
LA MESA, Camillo
2000
Abstract
The physicochem. properties of water-2,2,2 trifluoroethanol mixts. have been investigated, at 25 °C, by d., viscosity, surface tension, and relative permittivity. An anal. based on the Kirkwood theory for the dielec. polarization of mixts. has been performed and the gK correlation factor has been related to the occurrence of hydrogen bonding networks. Data on the above system have been analyzed and compared to literature data on water-ethanol mixts., to obtain information on the role that partial fluorination plays in the interactions of alcs. with water mols. As inferred from excess properties, nonideality contributions are smaller than in the corresponding water-ethanol solns. Accordingly, the extension of hydrogen bond networks and/or van der Waals contributions to the overall system stability are less significant than in simple alcs.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
