SELF-DIFFUSION STUDIES ON OMEGA-METHOXY POLYETHYLENE-GLYCOL MACROMONOMER MICELLES BY USING CYCLIC VOLTAMMETRIC AND FOURIER-TRANSFORM PULSEDGRADIENT SPIN-ECHO NUCLEAR-MAGNETIC-RESONANCE TECHNIQUES

The self-diffusion coefficient, D-m, interaction parameter, k(f), and hydrodynamic radius, R(h)(m), of the acrylic ester of omega-methoxy po lyethylene glycol macromonomer micelles were determined by a cyclic vo ltammetric technique using Co(sep)Cl-3 as the redox-active electrochem ical probe. A self-diffusion coefficient of the above macromonomer was also determined by Fourier transform pulsed gradient spin-echo (FT-PG SE) NMR technique. It has been found that the D-m is useful in measuri ng the critical micelle concentration of the macromonomer.