659401

Poly(styrene-ran-ethylene), sulfonated, cross-linkable solution

• Fórmula lineal: [CH₂CH(C₆H₄SO₃H)]_m(CH₂CH₂)_n
• MDL number: MFCD07785563
• UNSPSC Code: 26111700

Propiedades

• composition: styrene, 76 wt. % ; sulfonated stryene units, 32-38% ; vinyl silane cross-linking agent, <0.5%
• concentration: 5 wt. % in 1-propanol
• refractive index: n20/D 1.384
• conductivity: 0.1184 S/cm (The ionic conductivity can increase up to 50% when heating from RT to 67°C)
• bp: 57-60 °C
• density: 0.85 g/mL at 25 °C

Descripción

Application

Cross-linkable solid polymeric electrolyte.

Product becomes cross-linked with 800-1,000 mJ/cm² UV exposure after drying at 110 °C for 10-15 min; or at 140-150 °C for 1 min.

Preparation Note

To cast a film:
1. Concentrate solution to 600 centapoise viscosity (typically 6-9 wt.% polymer).
2. Preheat the casting surface to 35 °C. A clean, flat PTFE-coated glass surface is recommended.
3. Secure a silicone release liner to the casting surface.
4. Place a small drop of the polymer solution on the release liner.
5. Draw the polymer solution down the release liner.
6. Dry the film for 30 min. For controlled evaporation it is recommended to cover surface with aluminum foil that has been perforated with small pinholes.

Treat with 0.5M Sulfuric acid for 20 min to strengthen after cross-linking.