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Revision as of 23:26, 27 February 2013
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- crosslining of the quaternary ammonium films
- hydrogel cycle 2
- Make 4 100 mL solutions of 94 mL water, 6 mL 12 M HCl
- Heat solutions up to 70 °C under the hood
- Add a film to each solution. Heat the films for 1 hr.
- Rinse the films with distilled water
- Make 4 solutions of 1.68 g sodium bicarbonate in 100 mL water.
- Place each film in a sodium bicarbonate solution.
- Soak the films in the sodium bicarbonate solution for 15 minutes.
- 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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