Molecular dynamics of methoxy polyoxyethylene macromonomer micelles in the absence and presence of SDS micelles using H-1 NMR spin-lattice relaxation time measurements

Molecular dynamics studies performed by H-1 NMR spin-lattice relaxation time measurements suggest the occurrence of a mutual interaction between aqueous micelles of a macromonomer (acrylic ester of omega-methoxypolyethyleneglycol, Mol, wt, 460) and sodium dodecylsulfate (SDS). The alpha-CH2 of SDS and omega-OCH3 of the macromonomer seem to contribute to the maximum electrostatic interaction. The counterion association for SDS micelles is also hindered in the presence of larger macromonomer micelles as observed by conductivity measurements.