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Title: Ultrasonic velocity and acoustical parameters of poly (4, 4’-cyclo-hexylidene diphenyloxy-4, 4’-diphenylenesulfone) solutions at different temperatures
Authors: Amrutia, R R
Mehta, N M
Karia, F D
Parsania, P H
Keywords: Density
Molecular interactions
Thermodynamic parameters
Ultrasonic velocity
Issue Date: Nov-2006
Publisher: CSIR
IPC CodeG01N30/52
Abstract: Density, viscosity and ultrasonic velocity of pure solvents and PES-C [poly (4,4’–cyclohexylidene diphenyloxy-4,4’-diphenylene sulfone)] solutions and various thermodynamic parameters have been investigated at three different temperatures (30, 35 and 40°C) and correlated with concentration. A fairly good to excellent correlation between a given parameter and concentration has been observed in various solvent systems (chloroform, 1,2-dichloroethane, tetrahydrofuran and 1,4-dioxane) at all the three temperatures. Linear or nonlinear increase or decrease of thermodynamic parameters with concentration and temperature supported existence of strong molecular interactions in solutions. PES-C has structure-forming tendency in solvent systems studied as supported by positive values of solvation number. Structural modification is observed especially in 1,2-dichloroethane system above 2% concentration.
Page(s): 905-911
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Source:JSIR Vol.65(11) [November 2006]

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