The aqueous polymerization of methyl methacrylate was carried out at 60°C using potassium persulphate and sodium metabisulphite as the redox pair initiation system. The viscosity average molecular weight for the prepared poly(methyl methacrylate) (PMMA) was 1.49 x 105. Adsorption of PMMA on the surface of Egyptian albite ore was carried out. The adsorption isotherm obtained was S-shaped and the monolayer surface coverage was 7 ? 10-Sgg - ~ adsorbed polymer. The stereoregularity of the prepared PMMA changed with the adsorption process. The sedimentation rate of the modified ore in the organic medium was also determined. The most stable state for the suspension of the ore was found at 4 x 10- 3 g g- 1 adsorbed polymer.
Посилання на статтю:
Stereoregularity of adsorbed poly(methyl methacrylate) on the surface of albite ore / A. A. Abd El-Hakim, A. M. Ramadan* and A. S. Badran // Polymer. – 1992. – Vol 33. – P. 4880-4882.