| 초록 |
Properties of poly(acrylonitrile-co-butadiene)(NBR) depends on the acrylonitrile(ACN) content. The glass transition temperature(Tg) increases with increase of the ACN content but the rebound resilience, die swell, and gas permeability decrease. It has various uses such as vacuum packet, roller, hose and so on. Pyrolysis is an useful method for analysing polymeric materials including rubber. In this study, we investigated variation of the pyrolysis products with the pyrolysis temperature using pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS). NBRs with different ACN contents of 20 - 41.5 wt% were used. Major pyrolysis products were butadiene, 2-propene nitrile, 4-vinylcyclohexene, benzonitrile, indoline, and 2-methylenenon-4-enedinitrile. Relative abundances of the major pyrolysis products were varied with the pyrolysis temperature. Pyrolysis patterns of NBRs with different ACN content were compared. |
