Ultrasonic absorption studies of surfactant exchange between micelles and bulk phase in aqueous micellar solutions of nonionic surfactants with a short alkyl chain. 2. C6E3, C6E5, C8E4, and C8E8

1992 ◽  
Vol 96 (14) ◽  
pp. 6095-6102 ◽  
Author(s):  
M. Frindi ◽  
B. Michels ◽  
R. Zana
Keyword(s):  
Nonionic Surfactants ◽  
Alkyl Chain ◽  
Bulk Phase ◽  
Micellar Solutions ◽  
Ultrasonic Absorption ◽  
Absorption Studies ◽  
Aqueous Micellar Solutions

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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