scholarly journals Precise Measurement of Ultrasonic Absorption in Micellar Solutions in the Frequency Range from 0.2 to 10 MHz

1986 ◽  
Vol 59 (3) ◽  
pp. 707-713 ◽  
Author(s):  
Shigeo Kato ◽  
Hiroyasu Nomura ◽  
Ryszard Zielinski ◽  
Shoichi Ikeda
Keyword(s):  
Precise Measurement ◽  
Micellar Solutions ◽  
Ultrasonic Absorption ◽  
Frequency Range

Ultrasonic study of hydrochloric acid association in N,N-dimethylformamide

1968 ◽  
Vol 46 (6) ◽  
pp. 853-858 ◽  
Author(s):  
Siu C. Chan ◽  
J. P. Valleau
Keyword(s):  
Hydrochloric Acid ◽  
Sound Velocity ◽  
Hydrogen Chloride ◽  
Rate Constants ◽  
Ultrasonic Absorption ◽  
Frequency Range ◽  
Association Rate ◽  
Reaction Distance ◽  
Ultrasonic Study ◽  
Diffusion Controlled

Ultrasonic absorption and velocity have been measured in anhydrous N,N-dimethylformamide solutions of hydrogen chloride, over the frequency range 13 to 143 mc/s, and the concentration range 0.05 M to 3.5 M. A large relaxation is observed and ascribed to the association of the acid. The rate constants for this reaction are obtained, and their variations with concentration are discussed. The association rate appears to be entirely diffusion controlled, and the corresponding "reaction distance" is large. This may be related to the very large effect on the sound velocity (and hence on the compressibility) that arises from the introduction of these ions.

Densities, Speeds of Ultrasound, Ultrasonic Absorption and Viscosities of 1-Butanol + 1,3-Butanediol System at 298.15 K

2002 ◽  
Vol 216 (11) ◽  
Author(s):  
E. Zorebski ◽  
M. Zorebski ◽  
J. Nurek
Keyword(s):  
Excess Molar Volumes ◽  
Isentropic Compressibility ◽  
Ultrasonic Absorption ◽  
Frequency Range ◽  
Molar Volumes ◽  
Isentropic Compressibilities ◽  
Viscosity Deviations ◽  
Intermolecular Association ◽  
Speed Of Ultrasound ◽  
Excess Isentropic Compressibility

Densities, speeds of ultrasound, ultrasonic absorption coefficients (in the frequency range 10–80 MHz) and kinematic viscosities have been measured for 1-butanol + 1,3-butanediol mixtures at the temperature 298.15 K. Using these results, the molar volumes, isentropic compressibility coefficients, molar isentropic compressibilities, volume viscosities, and the corresponding excess and deviation values (excess molar volumes, excess isentropic compressibility coefficients, excess molar isentropic compressibilities, two different defined deviations speed of ultrasound, and dynamic viscosity deviations) were calculated. The excess and deviation values are expressed by Redlich-Kister polynomials and discussed in terms of the variations of the structure of the system caused by the participation of the two different alcohol molecules in the dynamic intermolecular association process through hydrogen bonding. The predictive abilities of Grunberg-Nissan and McAllister equations for viscosities of mixtures are also examined.

Ultrasonic Absorption in a Binary Mixture of Nitrobenzene/n-Hexane over the Frequency Range of 0.2 MHz–3 MHz

1991 ◽  
Vol 30 (S1) ◽  
pp. 25 ◽  
Author(s):  
Naoki Inoue ◽  
Hajime Takaoka ◽  
Masahiko Kato ◽  
Takahi Hasegawa ◽  
Kiichiro Matsuzawa
Keyword(s):  
Binary Mixture ◽  
Ultrasonic Absorption ◽  
Frequency Range

Chemical Relaxations in Aqueous Micellar Solutions by Ultrasonic Spectroscopy. I. Alkali Metal Hexyl and Octyl Sulfates

1974 ◽  
Vol 52 (3) ◽  
pp. 429-433 ◽  
Author(s):  
Douglas A. W. Adair ◽  
Vincent C. Reinsborough ◽  
Nick Plavac ◽  
John P. Valleau
Keyword(s):  
Critical Micelle Concentration ◽  
Alkali Metal ◽  
Micelle Formation ◽  
Micellar Solutions ◽  
Ultrasonic Absorption ◽  
Ultrasonic Spectroscopy ◽  
Relaxation Data ◽  
Pulse Technique ◽  
Absorption Studies ◽  
Aqueous Micellar Solutions

Ultrasonic absorption studies have been performed in dilute micellar solutions of Li, Na, and K octylsulfates, Na methylhexylsulfate, and Na hexylsulfate at 40° by the pulse technique in the range 13–143 MHz. Chemical relaxations associated with micelle formation were found in each system. The single-valued relaxation frequencies were concentration independent in solutions as concentrated as twice the critical micelle concentration. The relaxation data can be accounted for in terms of monomer–micelle association–dissociation.

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