Abstract
In a recent Letter we sketched a theory which takes into account the leading, second-virial corrections to ideal solution behavior in micellar suspensions. Allowing for excluded volume interactions between aggregates, we showed how the chemical potential of a soap molecule is modified by intermicellar packing entropy and how this can lead to enhancement of average size. In the present communication we generalize this idea to (arbitrarily) high concentrations and provide numerical estimates for the case of spherocylindrical rods. For overall soap concentrations more than two orders of magnitude above the cmc, the average aggregation number is shown to be significantly increased by intermicelle interactions of the excluded-volume type.
Original language | English |
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Pages (from-to) | 861-866 |
Number of pages | 6 |
Journal | Journal of Physical Chemistry |
Volume | 88 |
Issue number | 5 |
DOIs | |
State | Published - 1984 |