TY - JOUR
T1 - Effect of interaggregate forces on the size distribution of micelles
AU - Ben-Shaul, Avinoam
AU - Gelbart, William M.
PY - 1982
Y1 - 1982
N2 - The size distributions of given shapes of micelles, in aqueous solutions of soap molecules, are believed to be determined primarily by amphiphile geometry and hydrophobicity. Accordingly, direct forces between the aggregates have generally been neglected. In the present paper we extend the Onsager-McMillan-Mayer theory of dilute colloidal suspensions to allow for the exchange of molecules between aggregates. By so doing we are able to describe the effects of intermicelle interactions on the size distribution of aggregates. We conclude, from simple excluded volume considerations, that these effects depend upon the shape of micelle involved, e.g., they are more important for "disks" than for "rods". It is also possible, with the same formalism, to treat the effects of interaggregate forces on the formation of orientationally ordered (nematic) phases.
AB - The size distributions of given shapes of micelles, in aqueous solutions of soap molecules, are believed to be determined primarily by amphiphile geometry and hydrophobicity. Accordingly, direct forces between the aggregates have generally been neglected. In the present paper we extend the Onsager-McMillan-Mayer theory of dilute colloidal suspensions to allow for the exchange of molecules between aggregates. By so doing we are able to describe the effects of intermicelle interactions on the size distribution of aggregates. We conclude, from simple excluded volume considerations, that these effects depend upon the shape of micelle involved, e.g., they are more important for "disks" than for "rods". It is also possible, with the same formalism, to treat the effects of interaggregate forces on the formation of orientationally ordered (nematic) phases.
UR - http://www.scopus.com/inward/record.url?scp=0000989857&partnerID=8YFLogxK
U2 - 10.1021/j100392a004
DO - 10.1021/j100392a004
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AN - SCOPUS:0000989857
SN - 0022-3654
VL - 86
SP - 316
EP - 318
JO - Journal of Physical Chemistry
JF - Journal of Physical Chemistry
IS - 3
ER -