Synthesis and Characterization of Endcapped Hyperbranched Polyesters

Abstract

The synthesis of third generation of hyperbranched polyester (HBPE) based on AB₂ type monomer, 2,2-bis(hydroxymethyl) propionic acid (bis-MPA) and phloroglucinol as a core molecule via melt condensation procedure with p-TSA as a catalyst. Efforts have been taken for the endcapping of hyperbranched polyester by using phosphorus containing indole and imidazole (IN-PD and IM-PD) to form N-heterocyclic based polyesters (IN-HBPE and IM-HBPE). The synthesized compounds were subjected to characterization viz., FT-IR, ¹H and ¹³C NMR and elemental analysis. The spectral studies were supports the formation of compounds. ¹³C NMR gives the information about degree of branching of these polymers.