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Synthesis and Characterization of Hyperbranched Polymers from the Polymerization of Glycidyl Methacrylate and Styrene Using Cp 2 TiCl as a Catalyst
Author(s) -
Kong Lizhi,
Pan Caiyuan
Publication year - 2007
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700287
Subject(s) - polymer chemistry , branching (polymer chemistry) , glycidyl methacrylate , copolymer , polymerization , polymer , materials science , styrene , atom transfer radical polymerization , radical polymerization , molar mass distribution , composite material
Hyperbranched poly(glycidyl methacrylate) (PGMA) and poly(GMA‐ co ‐styrene) have been synthesized by the self‐condensing vinyl polymerization of GMA and the copolymerization of GMA and St. Cp 2 Ti(III)Cl catalyzed the epoxy groups to produce initiating radicals and Cu(II)X 2 (X = Br or Cl) was used for control of the polymerization. The resultant polymers were characterized by GPC and 1 H NMR, and the molecular weights, the molecular weight distribution and the degree of branching were determined. The branching structure of the polymers was further confirmed by a hydrolysis test. Hyperbranched star polymers with HPGMA as the core and PSt as the arms were synthesized by the atom transfer radical polymerization of St using HPGMA as a macroinitiator. The resultant products were analyzed by GPC and 1 H NMR. Their morphology in solution was investigated by TEM. The hyperbranched polymers were modified by various acids and amines, and the variation in solution properties was investigated.