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448885 Aldrich

Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene, sulfonated solution Green Alternative

5 wt. % in 1-propanol and dichloroethane

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Properties

Related Categories Alternative Energy, Chemical Synthesis, Enabling Products, Greener Alternative Products, Material Sciences,
composition   styrene, 29 wt. %
  sulfonated styrene units, 55-65%
greener alternative product characteristics   Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
concentration   5 wt. % in 1-propanol and dichloroethane
refractive index   n20/D 1.405
bp   79 °C
density   0.8 g/mL at 25 °C

Description

Packaging

25, 100 mL in glass bottle

Packaged in glass bottles

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.

Application

The films may be used as fuel cell membrane, electrochromic uses, biosensors and anti-thrombogenic and endothealizing coatings.

General description

Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene, sulfonated solution can be cast into a film with a conductivity of 7x10-2 S/cm in the fully hydrated acid form. Films have good optical transparency.

Sigma Life Science is committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

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Safety & Documentation

Safety Information

Signal word 
Danger
Hazard statements 
RIDADR 
UN 1992 6.1(3) / PGII
WGK Germany 
3
Flash Point(F) 
59 °F
Flash Point(C) 
15 °C
Protocols & Articles

Articles

Materials Issues in Polymer Electrolyte Membrane Fuel Cells

Fuel cells have the potential to reduce the nation’s energy use through increased energy conversion efficiency and dependence on imported petroleum by the use of hydrogen from renewable resources. Th...
Nancy L. Garland, Thomas G. Benjamin, John P. Kopasz
Material Matters 2008, 3.4, 85.
Keywords: Applications, Automotive, Catalysis, Combustion, Degradations, Diffusion, Electronics, Help, Ligands, Mass spectrometry, Phase transitions, Reductions, Renewable energy, Separation, Support

Perfluorosulfonic Acid Membranes for Fuel Cell and Electrolyser Applications

Deborah Jones Institut Charles Gerhardt CNRS–University of Montpellier, 34090 Montpellier, France Email: Deborah.Jones@univ-montp2.fr
Keywords: Degradations, Diffusion, Electron spin resonance, Fluorinations, Hydration reaction, Ion Exchange, Ion-exchange chromatography, Mass spectrometry, Microscopy, Nuclear magnetic resonance spectroscopy, Nucleic acid annealing, Polymerization reactions, Reductions, Scanning electron microscopy, Separation, Solvents, Spectroscopy, Transmission electron microscopy

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