User:Moira M. Esson/Notebook/CHEM-581/2012/08/29

Polyvinyl alcohol(PVOH) film preparation

• General Procedure:
  • Place 0.5g PVOH in a 10mL beaker with a small stir bar
  • Add 3mL of water
    • For each additional 0.5g, add an additional ~2mL of water
  • Place on hot plate and heat to 70°C-80°C
  • Stir and heat until dissolved(~15 min)
  • Remove stir bar and any remaining gel
  • Quickly pour solution into a Teflon dish. If excess gel is present remove with tweezers
  • Allow film to air dry overnight in fume hood
• Prepared PVOH films using general procedure
  • 0.5g PVOH (MW 130,000) in 3mL water
  • 1.0g PVOH (MW 130,000) in 5mL water
• Notes
  • An additional 2mL-3mL of water was added to fully dissolve the PVOH