The micellization of amphiphilic graft copolymer polystyrene-graft-poly(eth
ylene oxide) (PS-g-PEO) in selective solvent, toluene, was studied by means
of H-1-NMR, TEM and viscometry. Micelle formation of PS-g-PEO in toluene w
as strongly dependent on concentration and temperature. An increase in temp
erature shifted the micelle formation markedly to lower concentration. The
micelle was formatted at certain concentration, and it was spherical struct
ure. The viscosity data were analyzed to estimate the cmc value.