TITLE:
Preparation of Polymer-Mineral Nanocomposites Based on Vinyl Monomers and Dispersed Inorganic Oxides
AUTHORS:
Volodymyr Dutka, Yaroslav Kovalskyi, Olena Aksimentyeva, Nataliya Oshchapovska
KEYWORDS:
Polymer-Mineral Composites, Organic Peroxides, Radical Polymerization, Peroxide Thermal Degradation, Metal Oxides, Adsorption, Effect of Surface
JOURNAL NAME:
Advances in Chemical Engineering and Science,
Vol.11 No.1,
December
9,
2020
ABSTRACT: The
polymer-mineral composites were synthesized using vinyl monomers styrene,
methyl acrylate, and butyl acrylate with nano dispersed oxides Fe2O3,
Cr2O3, V2O5 and SiO2 in the presence of benzoyl peroxide and other
peroxide initiators. Benzoyl peroxide adsorption on Fe2O3,
Cr2O3, and V2O5 surfaces was
studied. The adsorption parameters were found: adsorption-desorption equilibrium
constants, maximum adsorption, and the area occupied by the molecule benzoyl
peroxide on the surface of the adsorbent. The molecular weights of the polymers
in the composites and the degree of grafting of the macromolecules of the
polymer to the surface of oxides were studied. It has been found that the
surface of the dispersed oxides influences the rate of thermal decomposition of
the peroxide initiators and the polymerization parameters of the vinyl
monomers.