SYNTHESIS an‎d CHARACTERIZATION OF NEW POLYKETONES an‎d COPOLYKETONES BASED ON DIFURFURYLIDENECYCLOPENTANONE

A new interesting class of polyketones and copolyke tones were synthesized via Friedel-Crafts reactiont hrough the polymerization of the monomer 1 with different diacid chlorides. The model compound 3 was synthesized by reacting 1 with benzoyl chloride and characterized by 1H-NMR, IR and elemental analyses.The poly- and copolyketones were insoluble in most organic solvents but easily soluble in protic solvents.The thermal properties of these poly- and copolyketones were evaluated and correlated to their structuralunits by TGA and DSC measurements, and had inherent viscosities 0.19-0.56 dl g-1. The crystallinity of some polymers was tested by X-ray analyses; also the morphological properties of selected examples ofpoly-and copolyketones were detected by SEM.