Search

Composites based on polyaniline and nanostructured zinc oxide were synthesized by mechanical mixing and the method ofin situpolymerization and their physicochemical properties were studied. The electrical conductivity, surface structure and morphology of composites have been investigated. It is shown that the method of synthesis and quantity of filler affects the morphology and physicochemical properties of composite materials. An addition of various quantities of mineral filler to composite allows controlling conductivity of obtained materials. XRD-analysis of composite materials synthesized byin situpolymerization confirms the interaction of the components of the composite. [ABSTRACT FROM AUTHOR]

Features of styrene polymerization in the presens of disperse iron oxide. It was shown, the iron oxide surface takes part in the initiation polymerization reaction and termination polymer chains. Degrees of grafting of polysterene macromolecules to the mineral surface were determinate. The equation of polymerization rate in the presens of Fe2O3 was proposed. [ABSTRACT FROM AUTHOR]

Influence of lead oxides on styrene polymerization, induced with benzoyl peroxide (BP) and tert-butyl hidroperoxide of (TBHP) was studied. It was shown, the lead oxide surface takes part in the initiation polymerization reaction of styrene if TBHP is used as initiator , but BP causes polymerization mainly in solution. Energies of activating of styrene polymerization, which was initiated with TBHP, reduces with growing of lead oxide contain in the system. Molecular weigh studying degrees of molecular grafting to the mineral surface and polydispersity of polystyrene testifies about the participation of addector in the reaction of initiation and termination. [ABSTRACT FROM AUTHOR]

The influence of klynoptilolite on vinyl monomer polymerization has been studied. Polymerization initiation with klynoptilolite, modified with Fe3+, Fe2+, Cr3+, Ni2+ metals, was passed according to redox reaction of organic peroxides with mineral surface. Part of polymer forms in the solution. Degree of links of polymer with mineral surface has been found. Two possible kation and radical mechanisms of styrene polymerization in the presence of unmodified klinoptilolite were suggested. [ABSTRACT FROM AUTHOR]