Synthesis of Star-Shaped Terpolymer Hyperbranched Polyester –PCL-PANI as a Biodegradable –Conductive Polymer

The conductive polymers such as polyaniline (PANI), and its derivatives have been witnessed an immense interest for the fabrication of conductive scaffolds due to its simple synthesis, chemical and electronic properties[1]. In this respect, hyperbranched aliphaticpolyesters(HAP) and polycaprolactone(PCL) may be appropriate candidates for improvement of aniline properties, in part due to their biocompatibility, biodegradability, their highly branched structure and wide range of practical, technological, and biomedical applications [2-3]. The HAP were synthesized by the meltpolycondensation reaction and poly(ε-caprolactone) arms have been grown on some of its end hydroxyl groups (HAPCL) by the ring opening polymerization. The synthesized macromonomer (HAPCL) subsequently were employed in chemical oxidation copolymerizations with aniline monomers to produce star-shaped PANI (S-PANI) with (HAPCL)core.Theterpolymer ,HAPCL and HAP were characterized by FT-IR,1HNMR,scanning electron microscopy and cyclic voltammetry.