Conductivities of poly(ethylene oxide) and poly(2-vinyl pyridine) blend

Min-Hui Cui, Dong Hua Cheng, Jun She Guo, Hong Quan Xie

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Poly(ethylene oxide) (MW 20,000) and poly(2-vinyl pyridine) (MW 35,000) were blended with LiClO4 or KSCN through a solution blending process. When the molar ratio of ethylene oxide/Li or K is 10, the blend of poly(ethylene oxide)(80 wt%)/poly(2-vinyl pyridine)(20 wt%) with LiClO4 or KSCN is a transparent elastomer. The ionic conductivities of these blends are 1.5 × 10-5 and 8.8 × 10-5 S/cm at 25°C, respectively. At 30°C the poly(ethylene oxide)(80 wt%)/poly(2-vinyl pyridine)(20 wt%) blends with KSCN at an ethylene oxide/K molar ratio of 10 exhibit an ionic conductivity value of 1.5 × 10-4 S/cm, a high value for ionic conductive polymers. At an ethylene oxide/Li molar ratio of 15 and a 2-vinyl pyridine/TCNQ molar ratio of 2, the mixed (ionic-electronic) conductivities of poly(ethylene oxide)(80 wt%)/poly(2-vinyl pyridine)(20 wt%) blends are higher than either ionic or electronic conductivities. When the molar ratio of ethylene oxide/Li and 2-vinyl pyridine/TCNQ are 10 and 2, respectively, the mixed (ionic-electronic) conductivities are intermediate between the ionic and electronic conductivities. Differential scanning calorimetry (DSC) shows that LiClO4 and TCNQ can compatibilize with the PEO/P2VP blend.

Original languageEnglish (US)
Pages (from-to)247-259
Number of pages13
JournalJournal of Macromolecular Science - Pure and Applied Chemistry
Volume33
Issue number3
StatePublished - 1996
Externally publishedYes

Fingerprint

Polyethylene oxides
Pyridine
Ethylene Oxide
Ethylene
Oxides
Ionic conductivity
Elastomers
pyridine
Differential scanning calorimetry
Polymers
potassium thiocyanate
lithium perchlorate
tetracyanoquinodimethane

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics

Cite this

Conductivities of poly(ethylene oxide) and poly(2-vinyl pyridine) blend. / Cui, Min-Hui; Cheng, Dong Hua; Guo, Jun She; Xie, Hong Quan.

In: Journal of Macromolecular Science - Pure and Applied Chemistry, Vol. 33, No. 3, 1996, p. 247-259.

Research output: Contribution to journalArticle

Cui, Min-Hui ; Cheng, Dong Hua ; Guo, Jun She ; Xie, Hong Quan. / Conductivities of poly(ethylene oxide) and poly(2-vinyl pyridine) blend. In: Journal of Macromolecular Science - Pure and Applied Chemistry. 1996 ; Vol. 33, No. 3. pp. 247-259.
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abstract = "Poly(ethylene oxide) (MW 20,000) and poly(2-vinyl pyridine) (MW 35,000) were blended with LiClO4 or KSCN through a solution blending process. When the molar ratio of ethylene oxide/Li or K is 10, the blend of poly(ethylene oxide)(80 wt{\%})/poly(2-vinyl pyridine)(20 wt{\%}) with LiClO4 or KSCN is a transparent elastomer. The ionic conductivities of these blends are 1.5 × 10-5 and 8.8 × 10-5 S/cm at 25°C, respectively. At 30°C the poly(ethylene oxide)(80 wt{\%})/poly(2-vinyl pyridine)(20 wt{\%}) blends with KSCN at an ethylene oxide/K molar ratio of 10 exhibit an ionic conductivity value of 1.5 × 10-4 S/cm, a high value for ionic conductive polymers. At an ethylene oxide/Li molar ratio of 15 and a 2-vinyl pyridine/TCNQ molar ratio of 2, the mixed (ionic-electronic) conductivities of poly(ethylene oxide)(80 wt{\%})/poly(2-vinyl pyridine)(20 wt{\%}) blends are higher than either ionic or electronic conductivities. When the molar ratio of ethylene oxide/Li and 2-vinyl pyridine/TCNQ are 10 and 2, respectively, the mixed (ionic-electronic) conductivities are intermediate between the ionic and electronic conductivities. Differential scanning calorimetry (DSC) shows that LiClO4 and TCNQ can compatibilize with the PEO/P2VP blend.",
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