Mixed Co/Fe Oxide Nanoparticles in Block Copolymer Micelles

摘要: Small iron oxide and Co-doped nanoparticles (NPs) were synthesized in a commercial amphiphilic block copolymer, poly(ethylene oxide)-b-poly(methacrylic acid) (PEO68-b-PMAA8), aqueous solutions. The structure composition of the micelles containing guest molecules (metal salts) or NPs oxides) studied using transmission electron microscopy, dynamic light scattering, X-ray photoelectron spectroscopy, powder diffraction. enlarged micelle cores after incorporation metal salts are believed to be formed by both PMAA blocks species penetrating PEO chains. nanoparticle size distributions PEO68-b-PMAA8 determined small-angle scattering (SAXS) bulk. Two independent methods for SAXS data interpretation comprehensive analysis volume showed presence small particles larger entities which ascribed organization copolymer bulk....