Studies on new polyetheramide-butylated melamine formaldehyde based anticorrosive coatings from a sustainable resource

Polyetheramide (PEtA) resin was synthesized through the condensation polymerization of N,N-bis (2-hydroxy ethyl) linseed oil fatty amide with bisphenol-A. The structural elucidation of PEtA was carried out by FT-IR, 1H-NMR and 13C-NMR spectroscopic techniques. The physico-chemical characterization of the resin was done by standard methods. PEtA was further treated with butylated melamine formaldehyde (BMF) in different weight percentages and applied on mild steel strips of standard sizes by brush. The resin systems were then cured at different temperatures to obtain the optimum curing temperature. The cured resin systems were subjected to spectroscopic analyses to ascertain the structure of the same. The thermal stability and curing behaviour were studied by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), respectively. The physico-mechanical properties and anticorrosive performance of the PEtA-BMF systems were also evaluated. The effect of BMF loading and the influence of increase in curing temperature on aforementioned properties were also investigated. The studies revealed that the PEtA-BMF systems performed well as an anticorrosive coatings material.