DETERMINATION OF THE STRUCTURE OF TETRADECYLDIMETHYLAMINOXIDE MICELLES IN WATER BY SMALL-ANGLE NEUTRON-SCATTERING

By means of a small-angle neutron scattering experiment the radius R a s well as the scattering length density of rodlike tetradecyldimethyla minoxide (TDMAO) micelles in D2O were determined. The micelles turned out to be homogeneous. As a function of the concentration c of TDMAO w e found the mean aggregation number (N), which increases with c, and t he value of two thermodynamic parameters describing the energy advanta ge by inserting a monomer in the end cap of the spherocylindrical mice lles and in the cylindrical part, respectively.