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Abstract
N-antipyryl-acrylamide monomer (NAA) (2,3-dimethyl-1-phenyl-5-oxo-3-pyrazolin-4-yl acryloylamine) was copolymerized with acrylonitrile in dimethyl formamide using azobisisobutyronitrile (AIBN) as initiator. The homopolymer and also the copolymers were characterized by a variety of spectral and thermal methods. Thermogravimetry (TG) and differential thermal analysis (DTA) data showed a remarkable improvement in the thermal behaviour of the investigated copolymers. A mechanism for the participation of the acryloyloxy units in the nitrile oligomerization is proposed and confirmed by interpretation of the fragmentation patterns of the mass spectrum of the N-antipyryl-acrylamide (NAA) monomer and also the IR spectra of the copolymers after heating.
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