Features of Obtaining Polymer Composites Based on Dispersed Oxides and Vinyl Polymers |
| V.S. Dutka, Ya.P. Kovalskyi
Ivan Franko National University of Lviv, Kyryla & Mefodiya str. 6, 79005 Lviv, Ukraine |
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| The effects of dispersed oxides Fe2O3, Cr2O3, α-PbO, β-PbO, PbO2, SiO2 on the processes of radical polymerization of styrene are studied. It is shown that the dispersed oxides affect the polymerization rate and the response of the thermal decomposition of radical initiators. Peroxides are adsorbed on the surface of mineral oxides and decomposed into free radicals. On the surface of SiO2 and Cr2O3, a heterolytic decomposition of peroxides takes place. The oxide introduced into the polymerization system reduces the molecular weight of the polymer that forms under these conditions. The degrees of grafting macromolecules to the surface of oxides were found. |
DOI:10.12693/APhysPolA.141.278 topics: polymer-mineral composites, kinetics of formation, molecular weights, growing degree |