Hud V. Effect of water vapor on the structure and electrical properties of hydrophobic polymers

Object of investigation - the process of adsorption of water vapor hydrophobic polymeric sorbents. The target is to investigate the sorption of water vapor by hydrophobic polymer systemsand to study the state of sorbed sorbent moisture, research on the impact of modification external fields and fillers on moisture sorption of polymers. The methods of gravimetry, dielectric spectroscopy, infrared spectroscopy, and magnetometry dosimetry were used. Dielectric isotherms of water vapor sorption by polymers that refer to the third type of Roger's classification were obtained. Itwas shown that with the sorption-desorption of water vapor, hysteresis was observed. It was proved by IR spectroscopy that in PMMA pores with a transverse diameter less 0.67 nm was dominated. It was set that the sorption of water vapour PVC and PS was accompanied by changes in their structure. It was shown that modification of polymers by fields of different physical nature causes change in their sorption properties. It was shown that most substantial changes undergoes PS, modified by PMP, that leads to the growth of real parts of complex dielectric permeability and conductivity of moisture saturated polymer. It was shown that the process of water diffusion in polymers was accompanied by a change in diffusion coefficient value.