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To determine the swelling of the PVOH/glutaraldehyde films, prepare another PVOH/glutaraldehyde/porphyrin/HCl film, conduct DSC, conduct FTIR,


Crosslinking Glutaraldehyde Films

  1. Allow the PVOH film containing glutaraldehyde to dry completely.
  5. Place film in solution for one hour.
  7. Heat HCl solution to 70°C
  9. Place film into HCl solution for 30 minutes.


  1. Determine the mass of the PVOH/glutaraldehyde film (has not been crosslinked).
  2. Place the film in a 250 mL beaker filled with 30 mL water.
  3. Cover beaker with parafilm to prevent evaporation.
  4. Allow film to soak for ____________
  5. Measure the volume of water remaining and the mass of the film.

Porphyrin Film Preparation

  1. 1 g of PVOH was dissolved in 7 mL H2O on a heated hot plate.
  2. Once the PVOH dissolved, 1 mL of glutaraldehyde, 1 mL of porphyrin, and 2-3 drops of HCl was added.
  3. The gel was stirred for 3 minutes and then was poured into a plastic dish and was allowed to evaporate for 1 week.




  • Add data and results here...


  • After break, do Na+ and Cu2+ absorption with crosslinked PVOH/glutaraldehyde films,


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