Synthesis and Characterization of Hyperbranched Polymers from the Polymerization of Glycidyl Methacrylate and Styrene Using Cp2TiCl as a Catalyst

✍ Scribed by Li-zhi Kong; Cai-yuan Pan

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 260 KB
• Volume: 208
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.200700287

✦ Synopsis

Abstract

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.

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