Abstract Infrared spectroscopy was used to confirm incorporation of magnetic particles into dispersion system. Synthesis of magnetite particles was performed by chemical coprecipitation: average particle diameter <d> = 20 nm, X-ray density ρ = 5.2 g∙cm-3. Thesamples of magnetite nanoparticles suspended in water-based (surfactant were sodium oleate, 0.5% aqueous solution of hydrochloric acid, 3% aqueous solution of pectin) and polyethylene-based (PEG1500:PEG400 8:2) were investigated. Using IR-spectroscopy the chemical interaction of SAS molecules with the surface layer of magnetite iron cations was determined.
Keyword: Magnetite nanoparticl, magnetic fluid, poly(ethylene glycol).