Preparation and Characterization of a Novel Hyperbranched Polyester Polymers Using A2+B3 Monomers

Abstract Compared to linear analogs, hyperbranched polymers (HBPs) have gotten much attention in the last decade because of their intrinsic globular topologies and distinctive features like low viscosity, high solubility, a degree functionality. In this work, four types polyester polymer HBPs been synthesized using A2+B3 polycondensation methodology. Firstly, starting material B3 monomer (Pyrimidine-2,4,6-triol) has urea malonic acid with presence sodium Na as catalyst for reaction. Secondly, materials (tartaric TA, adipic AD, maleic MA, phthalic anhydride PA) A2 monomers were added an oil bath prepare HBP. The chemical structure was characterized by FTIR, 1 H-NMR. molecular weight prepared gel permeation chromatography GPC, thermal properties differential scanning calorimetry DSC gravimetric analysis TGA. FTIR results showed that there are new bands, such C-O-C between monomers, indicated 1H-NMR. addition, GPC shows narrow distribution good stability,