Synthesis, Characterization and Thermal Properties ofStyrenated Poly(Ester-Amide) Resin


New unsaturated maleamic acid (USMA) was synthesized by the reaction of maleic anhydride with4-aminobenzoic acid in acetone. USMA was crosslinkedwith styrene monomers in the presence of benzoyl peroxide as an initiator. Subsequently the terminal carboxylic groupsof USMA-styrene reacted with epoxy resin in the presence of triethyl amine, affordedstyrenatedpoly(ester -amide) resin(SPEM). The structures of the obtained products were characterized by FT:IR, 1HNMR and C.H.N elemental analysis. The newSPEMresin was reinforced with 10wt.% of Zeolite, Bentonite and Silica. The thermal properties of the reinforcedSPEM resins were investigated by thermal gravimetric analyzer (TGA). SPEM resin(Zeolite bentonite and silica) showed enhanced thermooxidative stability compare to fillers free SPEM resin, and TG curves showed presence of char yield of about 33% up to 700oC.