MASS SPECTROMETRY AND CHROMATOGRAPHY IN THE INVESTIGATION OF FLURALITE® AND METALCONTAINING COMPOSITES BASED ON IT

Mass spectrometry and gas-chromatography were used to study low and high-molecular weight organic fluorocompounds. Experimental results were compared with molecular statistics calculations of thermodynamic characteristics of the adsorption of fluoroderivatives of methane, benzene, toluene and diphenyl on graphitized thermal carbon black. Thermodesorption mass spectrometry coupled with gas-chromatography as well as laser desorption/ionization techniques were used to analyses destruction products of polytetrafluoroethylene (Fluralite®). The fragmentation of polymer characteristic ions in different modes of ionization was investigated. It was observed the introduction of metals (magnesium and tungsten) and non-metals (silicon and boron) in Fluralite® significantly affects the destruction processes. The depolimerization of fluoroplastics with formation of fluoroalkanes and fluoroalkenes up to 3000 Da was characterized only for Fluralit® mechanical activated with non-metals. It was found that the complex of chromatography and mass spectrometry techniques can effective characterize the fluoroplastic destruction products.