electric conductivity

Hydrosilylation reaction of 2,4,6,8-tetrahydro-2,4,6,8-tetramethylcyclotetra siloxane (D4H) allyl trifluoroacetate and vinyltriethoxysilane catalysed by platinum catalysts has been studied.The synthesized D4R,R' was analyzed with FTIR, 1H, 13C, and 29Si NMR spectroscopy. Via sol-gel reactions of D4R,R' systems doped with lithium trifluoromethylsulfonate (triflate) solid polymer electrolyte membranes have been obtained. It has been found that the electric conductivity of the polymer electrolyte membranes at room temperature changes in the range of (4•10-5)–(6•10-7) S/cm.

The sorption and conducting characteristics of metal-containing hydrogels on the basis of polyvinyl pirrolidone in different mediums are investigated. The typical dependences of electric conductivity change on solvent nature and concentration, pH-medium and applied loading for obtained composition hydrogels are determined. Досліджено сорбційні та електропровідні властивості металовмісних гідрогелів на основі полівінілпіролідону у різних середовищах.

The results of many years electromagnetic monitoring in active seismic zones of Russia (Kamchatka, Bajkal area) are shown. Seasonal variations of electric conductivity in geological media for different depths, annual variations of magnetotelluric impedance, magnetic tipper with up to 1,000 sec periods were defined. Their correlation with geodynamic processes is discussed.

For the first time the series of the composites of aniline and natural mineral glauconite with different ratio of components has been synthesized by oxidation of aniline by ammonium peroxydisulfate in 0.5 M citrate acid aqueous solutions in the presence of dispersion of mineral filler. X-ray phase analysis confirms the amorphous-crystalline structure of produced composites.