Synthesis of Hyperbranched Aromatic Poly(ether sulfone) with Sulfonyl Chloride Terminal Groups

Abstract

Abstract A new hyperbranched aromatic poly(ether sulfone) with sulfonyl chloride terminal groups was prepared by polycondensation of a new AB2 monomer (1), 4,4′-(m-phenylenedioxy)bis(benzenesulfonyl chloride). The polymerization was carried out in nitrobenzene at 120 °C for 3 h in the presence of a catalytic amount of FeCl3, giving the polymer with number-average molecular weights up to 35,700. Furthermore, an ABA block copolymer was prepared from a linear polymer, poly(ether sulfone) with sulfonyl chlorides at both ends and AB2 monomer 1.