Synthesis and polymerization mechanism of poly(phenylene ether) diblock copolymers

Daisuke Yoshii, Hidenori Murata, Kenichi Oyaizu, Makoto Yuasa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Oxidative polymerization of 2,6-dimethylphenol catalyzed by copper-amine complexes provides a convenient method to synthesize poly(2,6-dimethyl-1,4- phenylene ether) (PPE). Based on the mechanism of polymerization and depolymerization of PPE, it was anticipated that PPE block copolymers should be obtained. In this work, the behavior of polymerization, and the structure of the resulting copolymers were investigated. The depolymerization of PPE with oligo(2,6-difluoro-1,4-phenylene ether) using a CuCl2/N,N,N′, N′-tetramethylethylenediamine catalyst was accomplished to produce the corresponding copolymer. Structural analyses using NMR, DSC, and XRD revealed that the polymer was a block copolymer. During the depolymerization reaction, an intermediate phenoxyl radical was observed by ESR. The depolymerization with other oligomeric PPE will be discussed.

Original languageEnglish
Title of host publicationPolymer Preprints, Japan
Pages2973
Number of pages1
Volume55
Edition2
Publication statusPublished - 2006
Externally publishedYes
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama
Duration: 2006 Sep 202006 Sep 22

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CityToyama
Period06/9/2006/9/22

Fingerprint

Depolymerization
Block copolymers
Ethers
Polymerization
Copolymers
Reaction intermediates
Paramagnetic resonance
Amines
Nuclear magnetic resonance
Copper
Catalysts
Polymers

Keywords

  • Block copolymerization
  • Copolymerization
  • Oxidative polymerization
  • Poly(phenylene ether)

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Yoshii, D., Murata, H., Oyaizu, K., & Yuasa, M. (2006). Synthesis and polymerization mechanism of poly(phenylene ether) diblock copolymers. In Polymer Preprints, Japan (2 ed., Vol. 55, pp. 2973)

Synthesis and polymerization mechanism of poly(phenylene ether) diblock copolymers. / Yoshii, Daisuke; Murata, Hidenori; Oyaizu, Kenichi; Yuasa, Makoto.

Polymer Preprints, Japan. Vol. 55 2. ed. 2006. p. 2973.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yoshii, D, Murata, H, Oyaizu, K & Yuasa, M 2006, Synthesis and polymerization mechanism of poly(phenylene ether) diblock copolymers. in Polymer Preprints, Japan. 2 edn, vol. 55, pp. 2973, 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, 06/9/20.
Yoshii D, Murata H, Oyaizu K, Yuasa M. Synthesis and polymerization mechanism of poly(phenylene ether) diblock copolymers. In Polymer Preprints, Japan. 2 ed. Vol. 55. 2006. p. 2973
Yoshii, Daisuke ; Murata, Hidenori ; Oyaizu, Kenichi ; Yuasa, Makoto. / Synthesis and polymerization mechanism of poly(phenylene ether) diblock copolymers. Polymer Preprints, Japan. Vol. 55 2. ed. 2006. pp. 2973
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AB - Oxidative polymerization of 2,6-dimethylphenol catalyzed by copper-amine complexes provides a convenient method to synthesize poly(2,6-dimethyl-1,4- phenylene ether) (PPE). Based on the mechanism of polymerization and depolymerization of PPE, it was anticipated that PPE block copolymers should be obtained. In this work, the behavior of polymerization, and the structure of the resulting copolymers were investigated. The depolymerization of PPE with oligo(2,6-difluoro-1,4-phenylene ether) using a CuCl2/N,N,N′, N′-tetramethylethylenediamine catalyst was accomplished to produce the corresponding copolymer. Structural analyses using NMR, DSC, and XRD revealed that the polymer was a block copolymer. During the depolymerization reaction, an intermediate phenoxyl radical was observed by ESR. The depolymerization with other oligomeric PPE will be discussed.

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