Synthesis and thermal study of polyamides and polyaspartimides

Abstract Copolymers were synthesized by polyaddition reactions of aromatic diamine (4,4′-sulphonyl dianiline) and aliphatic diamines (1,2-diaminoethane and 1,3-diaminopropane) with N , N ′-arylenebismaleimides ( N , N ′- m -phenylene- N , N ′- p -phenylene-, and N , N ′-benzidine-). They were characterized by elemental analysis, i.r. spectra and viscosity. The thermal behaviour of copolymers was studied using Thermogravimetric Analysis (TGA). All the copolymers are stable up to 270°. Polyamides are less stable than polyaspartimides.