Synthesis and thermal behaviour of poly( N-acryloyl, N′-cyanoacetohydrazide) and some of its metal complexes

Abstract

N-Acryloyl, N′-cyanoacetohydrazide (ACAH) has been synthesized for the first time as a new water soluble chelating monomer. Its structure was elucidated by both elemental and spectral analyses. This new monomer readily undergoes free radical polymerization in both aqueous and non-aqueous media. The thermal behaviour of poly( N-acryloyl, N′-cyanoacetohydrazide) (PACAH) and its copper and nickel complexes was investigated using thermogravimetric (TGA) and differential thermal analysis (DTA) techniques. The data obtained showed that the thermal behaviour of PACAH-metal complexes is significantly different from that of PACAH itself. Spectral analysis (IR) was used to follow the structural changes accompanying the thermal degradation process. A mechanism for the degradation reaction of PACAH has been proposed.