Difference between revisions of "User:Klare Lazor/Notebook/Chem-496-001/2013/02/26"

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#crosslining of the quaternary ammonium films
#hydrogel cycle 2

Revision as of 20:26, 27 February 2013

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  1. crosslining of the quaternary ammonium films
  2. hydrogel cycle 2


  1. Make 4 100 mL solutions of 94 mL water, 6 mL 12 M HCl
  2. Heat solutions up to 70 °C under the hood
  3. Add a film to each solution. Heat the films for 1 hr.
  4. Rinse the films with distilled water
  5. Make 4 solutions of 1.68 g sodium bicarbonate in 100 mL water.
  6. Place each film in a sodium bicarbonate solution.
  7. Soak the films in the sodium bicarbonate solution for 15 minutes.
  8. Rinse the films in distilled water and place under the hood to try.
  • Observations: the cross linking hcl solution turned turbid. we believe this is due to the fack that the charged quaternary ammonium+pvoh is dissolvable in water, and some dissolved out of the film before it could be cross linked. uv vis will be performed in order to quantify the amount lost.

  • For freeze-thawing, the hydrogels were removed from the freezer at 2:20 and were placed back in at 6:20


  • Add data and results here...


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