Direct pyrolysis mass spectrometry of acrylonitrile–cellulose graft copolymer prepared by radiation-induced graft polymerization in presence of styrene as homopolymer suppressor

摘要: Graft polymerization of acrylonitrile onto cellulosic filter paper competing with the homopolymerization by mutual irradiation technique was studied in presence homopolymer suppressors. Addition FeCl3 decreased both and graft polymerization, whereas inclusion a low ratio styrene monomer leads to successful grafting little formation. Chemical structure thermal behavior produced copolymers were investigated gradual heating solid probe mass spectrometer equipped GCMS data system. The resulting total ion current (TIC) showed that degradation follows two-step pyrolysis. comonomer increased stability prepared acrylonitrile–cellulose copolymer. pyrolysis products have spectra characteristic copolymer composition; they contain repeating unit oligomers. Total spectrum subtractions used separate measure at distinctly different temperatures.