Abstract
Novel epoxy resin based polyamides (EPAs) were prepared by the condensation of bisester derivative namely 1,l′-(1-methylethylidene) bis[4-{1-(1-imino-3-ethylbenzoate)-2-propanolyloxy}]benzene, (BE) with various aliphatic diamines viz., 1,2-ethylene diamine (EDA), 1,3-propylene diamine (PDA), 1,4-butylene diamine (BDA) and 1,6-hexamethylene diamine (HMDA). The resultant EPAs were characterized by infrared spectroscopy (IR) and number average molecular weight ( Mn ) of EPAs were estimated by non-aqueous conductometric titration. As produced, EPAs having amido groups may act for curing of epoxy resins. Differential scanning calorimetric (DSC) curing kinetics of the epoxy resins viz., diglycidyl ether of bisphenol-A (DGEBA) and triglycidyl ether of p-amino phenol (TGPAP) have been investigated using EPAs as a curing agent and triethyl amine (TEA) as a catalyst. Thermal stability of the cured epoxy systems were studied by thermogravimetric analysis (TGA).
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