User:Klare Lazor/Notebook/Chem-496-001/2013/02/26: Difference between revisions
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==Description== | ==Description== | ||
# 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 | |||
==Data== | ==Data== |
Revision as of 21:25, 27 February 2013
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