Infrared spectra of thermally degraded poly(vinyl-chloride)

Abstract

The cha nges in chemical structure occu ring in pol y (vinyl chloride) as a res ul t of heati ng ina vacu um in t he range 100° to 400° C wer e studied using infrared spectropho to metry. The pri ncip a l changes occ urri ng in t he residue during p yrolysis in a vacuum were the format ion of unsaturated s tructures a nd a chan ge from a n al iphatic spectrum to one showing aroma tic absorption. The data are used to suppor t a previou sly proposed mechani sm of decomposition for poly (vinyl chloride) .