SYNTHESIS OF AN OPTICALLY TRANSPARENT COPOLYMER ON THE BASIS OF NVINYL CARBAZOLE AND STYRENE

Abstract

As a result of copolymerization of N-vinyl carbazole with styrene, the optically transparent copolymer was synthesized and the regularities of the copolymerization process, the composition and structure of the copolymer determined. The copolymerization constant values were determined by the Fineman–Ross method (r1=0.032, r2=5.5). It found that the styrene shows higher activity than N-vinyl carbazole. The parameters value of the copolymer microstructure was reveled. The obtained copolymer has a sufficiently high light-refractive index ( 20 nD =1.6504). The light transmission capacity of the copolymer is 87-89%. Varying the initial composition of the copolymer, the influence of the composition on the physicalmechanical properties of the copolymer was determined. It found that with an increase in N-vinyl carbazole links, the thermal stability in the copolymer increased proportionally. It was established that the mass loss of this copolymer at 280°C during thermal degradation was 5-6 %.