When heated to decomposition it emits toxic vapors of NOx;Acrylonitrile-butadiene-styrene (ABS) copolymers without and with a polybrominated epoxy type flame retardant were thermally degraded at 450 degrees C alone (10 g) and mixed with polyvinylchloride (PVC) (8 g/2 g). Gaseous and liquid products of degradation were analysed by various gas chromatographic methods (GC with TCD, FID, AED, MSD) in order to determine the individual and cumulative effect of bromine and chlorine on the quality and quantity of degradation compounds. It was found that nitrogen, chlorine, bromine and oxygen are present as organic compounds in liquid products, their quantity depends on the pyrolysed polymer or polymer mixture. Bromophenol and dibromophenols were the main brominated compounds that come from the flame retardant. 1-Chloroethylbenzene was the main chlorine compound observed in liquid products. It was also determined that interactions appear at high temperatures during decomposition between the flame retardant, PVC and the ABS copolymer.
Other Experimental Properties
ABS Resin is resistant to attack by mineral oils, waxes, and related commercial material because of the polar character of the nitrile group from acrylonitrile component.
MeSH Entry Terms
ABS resin;ABS resin, ammonium salt;acrylonitrile-butadiene-styrene resin;Novodur;poly(acrylonitrile-butadiene-styrene)