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The effect of salt on the critical behaviour of non-ionic micellar solutions

✍ Scribed by Kristian Weckström

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
343 KB
Volume
119
Category
Article
ISSN
0009-2614

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✦ Synopsis

The critical behaviour of n-octyl pentaoxyethylene glycol in aqueous solutions of sodium chloride was investigated by quasi-elastic light scattering and viscosity measurements. The apparent hydrodynamic radius of the non-ionic micelles increases by addition of salt even at temperatures far from the critical demixing point. An analysis in terms of correlation radii shows that the temperature dependence of the micellar spatial correlations is altered by salt addition, without affecting the critical exponent of the correlation length.

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