Syntheses of syndiotactic-polystyrene-graft-poly(methyl methacrylate), syndiotactic-polystyrene-graft-poly(methyl acrylate), and syndiotactic-polystyrene-graft-atactic-polystyrene with defined structures by atom transfer radical polymerization

Shengsheng Liu, Ayusman Sen

Research output: Contribution to journalArticlepeer-review

85 Scopus citations

Abstract

Syndiotactic polystyrene graft copolymers, syndiotactic-polystyrene-graft-poly(methyl methacrylate), syndiotactic-polystyrene-graft-poly(methyl acrylate), and syndiotactic-polystyrene-graft-polystyrene, were synthesized by atom transfer radical polymerization using brominated syndiotactic polystyrene as initiator and CuBr combined with pentamethyldiethylenetriamine as catalyst. Both the graft density and the molecular weight of the graft segments were controlled by changing the bromine content of syndiotactic polystyrene and the amount of monomer used in the grafting reaction. The atom transfer radical polymerization mechanism for grafting was supported by NMR analysis of the end groups. The melting point behavior of syndiotactic-polystyrene-graft-poly(methyl methacrylate) depends on both graft density and graft length.

Original languageEnglish (US)
Pages (from-to)5106-5110
Number of pages5
JournalMacromolecules
Volume33
Issue number14
DOIs
StatePublished - Jul 11 2000

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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