Synthesis of a novel block copolymer poly(ethylene oxide)-block-poly(4-vinylpyridine) by combination of anionic ring-opening and controllable free-radical polymerization

Guangqiang Lu, Zhongfan Jia, Wen Yi, Junlian Huang

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The block copolymer poly(ethylene oxide)-b-poly(4-vinylpyridine) was synthesized by a combination of living anionic ring-opening polymerization and a controllable radical mechanism. The poly(ethylene oxide) prepolymer with the 2,2,6,6-tetramethylpiperidinyl-1-oxy end group (PEOT) was first obtained by anionic ring-opening polymerization of ethylene oxide with sodium 4-oxy-2,2,6,6-tetramethylpiperidinyl-1-oxy as the initiator in a homogeneous process. In the polymerization UV and electron spin resonance spectroscopy determined the 2,2,6,6-tetramethylpiperidinyl-1-oxy moiety was left intact. The copolymers were then obtained by radical polymerization of 4-vinylpyridine in the presence of PEOT. The polymerization showed a controllable radical mechanism. The desired block copolymers were characterized by gel permeation chromatography, Fourier transform infrared, and NMR spectroscopy in detail.

Original languageEnglish
Pages (from-to)4404-4409
Number of pages6
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume40
Issue number24
DOIs
Publication statusPublished - 15 Dec 2002
Externally publishedYes

Keywords

  • 4-Vinylpyridine
  • Anionic polymerization
  • Block copolymers
  • Controllability
  • Ethylene oxide
  • Radical polymerization

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