Synthesis, Characterization, and Conductivities of Poly(2-Vinylpyridine)-graft-Polyoxyethylene using a Macromer Technique

Min-Hui Cui, Jun She Guo, Hong Quan Xie

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Poly(2-vinylpyridine) (P2-VP) with uniform polyoxyethylene (PEO) grafts was synthesized using a macromer technique. 2-Vinylpyridine was copolymerized with PEO macromer in solution by using azobisisobutyronitrile (AIBN) as the initiator. The effects of the amount of AIBN, the concentrations of 2-vinylpyridine and macromer, the number-average molecular weight of macromer, and the charging ratio of macromer to 2-vinylpyridine in the copolymerization were studied. The copolymerization rate of the PEO macromer with 2-vinylpyridine was also investigated. The grafting efficiency reached about 56%. The crude graft copolymer was purified by extraction and precipitation, and it was characterized by IR, !H-NMR, and Bruss membrane osmometry. The PEO grafts were doped with LiC104 and showed ionic conductivity around 4.10 × 10“6 S.cmat -1 25°C whereas the P2-VP main chains were complexed with TCNQ to obtain electronic conductivity around 5,50 × 10 - 6 S’cm’1 at 25 °C. The mixed (ionic and electronic) conductivity of the doped copolymer could reach about 5.40 × 10 - 5 S-cm-1 at 25 °C and showed a synergistic effect.

Original languageEnglish (US)
Pages (from-to)1293-1303
Number of pages11
JournalJournal of Macromolecular Science - Pure and Applied Chemistry
Volume32
Issue number7
DOIs
StatePublished - Jul 1 1995
Externally publishedYes

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Polyethylene oxides
Grafts
Polyethylene glycols
Copolymerization
Graft copolymers
Ionic conductivity
Copolymers
Molecular weight
Nuclear magnetic resonance
Membranes
2-vinylpyridine
poly(2-vinylpyridine)
azobis(isobutyronitrile)

ASJC Scopus subject areas

  • Chemistry(all)
  • Ceramics and Composites
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Synthesis, Characterization, and Conductivities of Poly(2-Vinylpyridine)-graft-Polyoxyethylene using a Macromer Technique. / Cui, Min-Hui; Guo, Jun She; Xie, Hong Quan.

In: Journal of Macromolecular Science - Pure and Applied Chemistry, Vol. 32, No. 7, 01.07.1995, p. 1293-1303.

Research output: Contribution to journalArticle

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AB - Poly(2-vinylpyridine) (P2-VP) with uniform polyoxyethylene (PEO) grafts was synthesized using a macromer technique. 2-Vinylpyridine was copolymerized with PEO macromer in solution by using azobisisobutyronitrile (AIBN) as the initiator. The effects of the amount of AIBN, the concentrations of 2-vinylpyridine and macromer, the number-average molecular weight of macromer, and the charging ratio of macromer to 2-vinylpyridine in the copolymerization were studied. The copolymerization rate of the PEO macromer with 2-vinylpyridine was also investigated. The grafting efficiency reached about 56%. The crude graft copolymer was purified by extraction and precipitation, and it was characterized by IR, !H-NMR, and Bruss membrane osmometry. The PEO grafts were doped with LiC104 and showed ionic conductivity around 4.10 × 10“6 S.cmat -1 25°C whereas the P2-VP main chains were complexed with TCNQ to obtain electronic conductivity around 5,50 × 10 - 6 S’cm’1 at 25 °C. The mixed (ionic and electronic) conductivity of the doped copolymer could reach about 5.40 × 10 - 5 S-cm-1 at 25 °C and showed a synergistic effect.

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