SPIN-PROBE IN POLYMER MICELLES - COMPLEXE S OF SODIUM POLY(ACRYLATE) WITH DODECYLTRIMETHYLAMMONIUM BROMIDE

The rotational mobility of a spin probe in polymer micellar systems, i .e., complexes of dodecyltrimethylammonium bromide (DTAB) with sodium poly(acrylate) and free DTAB micelles, was studied. The rotational mob ility of the probe in the polymer micelles is markedly lower than in-t he free micelles. This is caused either by a closer packing of the det ergent molecules or by the effect of polymer-surfactant interaction on the molecular mobility of surfactant. Variation of the composition of the complex almost does not affect the probe mobility. This effect do es not depend on the solubility of the complex. The packing density in intramacromolecular polymer micelles is independent of the compositio n of the complex and its solubility.