Anionic synthesis of epoxy end-capped polymers

Haining Ji, Brandon S. Farmer, William K. Nonidez, Rigoberto C. Advincula, Grant D. Smith, S. Michael Kilbey, Mark D. Dadmun, Jimmy W. Mays*

*この研究の対応する著者

研究成果: Article査読

12 被引用数 (Scopus)

抄録

The reaction of living anions of polystyrene (PS) or poly(methyl methacrylate) (PMMA) with epibromohydrin for the synthesis of well-defined epoxy end-functionalized polymers is reported. Polyanions were reacted with an excess of epibromohydrin in tetrahydrofuran (THF) at 78 °C. The functionalities of the resulting polymers were analyzed by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS), NMR, and size exclusion chromatography (SEC). The epoxy end groups were reacted with 1,1-diphenyl- hexyllithium, and MALDI-TOF MS and NMR before and after this chemical modification were used to determine the presence of the epoxy end groups. The presence of the epoxy end group was confirmed by anionically polymerizing ethylene oxide from these epoxy end group. The formation of a block copolymer due to the epoxy end groups was proved by SEC analysis. The combined MALDI-TOF MS, 1H NMR, and SEC results indicate that epoxy end-capped PS was obtained in quantitative yield. The method was extended to the synthesis of epoxy end-capped PMMA. With this polymer the extent of end-functionalization was high but not quantitative, with non-dimeric byproducts detected by MALDI-TOF MS.

本文言語English
ページ(範囲)807-814
ページ数8
ジャーナルMacromolecular Chemistry and Physics
208
8
DOI
出版ステータスPublished - 2007 4月 16
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 物理化学および理論化学
  • ポリマーおよびプラスチック
  • 有機化学
  • 材料化学

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