Synthesis of four- and six-armed star-shaped polycarbonates by immortal alternating copolymerization of CO₂ and propylene oxide

Abstract

A series of four- and six-armed star-shaped poly(propylene carbonate)s (PPCs) have successfully been synthesized by carbon dioxide (CO₂)–propylene oxide (PO) immortal alternating copolymerization initiated either from tetra- or hexa-functional carboxylic acids.