Hydration of Dodecyltrimethylammonium Hydroxide Micelles

P. C. SCHULZ, J. L. RODRIGUEZ, M. A. MORINI, J. E. PUIG

COLLOID AND POLYMER SCIENCE

SPRINGER

Lugar: Berlin; Año: 1997

0303-402X

The hydration of dodecyltrimethylammonium hydroxide (DTAOH) micelles was determined by viscosity measurements, giving 39.2 ± 7.0 water molecules per micellized dodecyltrimethylammonium ion. This result is lower than the hydration of DTAB micelles, which is about 65. This difference may be due to the effect of the electro-restrictive structure-making hydroxide ion on the hydration of the alkyltrimethylammonium head group, in comparison with the less hydrated structure-breaking bromide ion.