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 language | English (US) |
---|---|
Pages (from-to) | 247-259 |
Number of pages | 13 |
Journal | Journal of Macromolecular Science - Pure and Applied Chemistry |
Volume | 33 |
Issue number | 3 |
DOIs | |
State | Published - Jan 1 1996 |
Externally published | Yes |
ASJC Scopus subject areas
- Ceramics and Composites
- Chemistry(all)
- Polymers and Plastics
- Materials Chemistry