Dynamics of Micelle Formation and Breakdown

The previous report (Colloid Science, Vol. 3, Ch. 6) was written at a time when the theoretical description introduced by Aniansson and Wall appeared to explain the results of fast kinetic experiments provided by several groups of workers. In the past four years this work has been consolidated and extended in a most impressive way. Two reviews, which summarize the present state of the field, and which contain much useful data, have appeared. 

Similar theoretical considerations give the slow relaxation time as  

Experiment.—Several research groups have contributed exprimental relaxation data, and interpreted it in terms of the Aniansson and Wall model. A selection of results are recorded in Table 1. Hoffmann and co-workers conducted a 

1 Fast and slow relaxation times for cationic surfactants  

The theoretical treatment of the model of Aniansson and Wall is not directly applicable to the time constants obtained in ultrasonic experiments, but this gap has been bridged.The amplitude is predicted to be zero at the c.m.c. then increases with concentration to a broad maximum and thence slowly decreases, as observed for sodium dodecyl sulphate. An analysis of amplitudes in P-jump kinetics implies the possibility of a third relaxation process due to a change in electrolyte properties. This counterion binding equilibrium may have been observed in ultrasonic studies of sodium decyl sulphate. Attempts by the former authors to modify the Aniansson and Wall theory 

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