Thermal behaviour and electrical conductivity of acrylonitrile-N-(2,3-dimethyl-1-phenyl-5-oxo-3-pyrazolin-4-YL)-N'-acryloylthiourea copolymers

Abstract Acrylonitrile was copolymerized with N -(2,3-dimethyl-1-phenyl-5-oxo-3-pyrazolin-4-yl)- N' -acryloylthiourea (antipyrine-acryloylthiourea APAT) in dimethylformamide. The prepared copolymers and homopolymer (PAPAT) were characterized by a variety of analytical, spectral and thermal methods. Thermogravimetry (TG) and differential thermal analysis (DTA) data showed that the comonomer (APAT) initiates the nitrile oligomerization reaction in the copolymers upon heating. A mechanism for the initiation of the APAT units in the nitrile copolymers was also proposed. The electrical conductivities of the copolymers as well as of polyacrylonitrile (PAN) were measured.