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Films and components All films were heated on a hot plate until the PVOH dissolved in the water. For films 5,6, and 7, additional water was added to the gel to assist in the dissolution. Once dissolved, the film was removed from heat and isopropyl and glutaraldehyde were added. The isopropyl was added first and stirred for roughly 2 to 3 minutes. Glutaraldehyde was added last.
isopropyl concentration determinations The concentrations determined to be tested were 0.1%, 1%, 10% and 100% isopropyl. Isopropanol solutions were pepared by taking 10 mL of isopropanol (see notes) and putting it in a tube. Serial dilutions with water were then carried out to create 10%, 1% and 0.1% solutions. To create these solutions, 1 mL of solution was added to 9 mL of water. 0.872 mL of each solution was added to its respective film.
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