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Making PVOH/Glutaraldehyde/Phenol Films:
Notes on Phenol Safety Procedure: Keep Phenol under hood at all times. Use FULL protective gear to avoid touching or breathing the phenol. Wash all dishes that have touched phenol thoroughly and pour waste water in a labeled waste container. Clean up ANY and ALL phenol that spills thoroughly. Throw away all solid waste that has touched phenol in a labeled solid waste container.
Notes on Films: These films did not form as well as hoped. 2 of the solutions (the 0.214g Phenol and the 0.0214g phenol) dissolved but then began to form many bubbles in them. The films therefore look somewhat white with bubbles. The 2.15g phenol solution had a lot of trouble dissolving, furthermore the phenol was a little brown almost immediately on being added to the solution. An extra 5 mL was added to this solution to aid dissolution.
Calculations: There are 6.86508E21 OH groups n 0.5g PVOH (from previous days' calculations) * 2 = 1.373E22 OH groups in 1g PVOH We want films in which 10%, 1%, 0.1%, and 0.01% of PVOH OH groups react with OH groups in phenol.
10%) 1.373E22 OH groups in 1g PVOH * 0.1 = 1.373E21 NOTE***** I just noticed I made a calculation mistake and in my original calculations had this equaling 1.373E23, 100x the actual amount. This number is then divided by 6.022E23 and multiplied by the molecular weight of Phenol (94.11). Therefore all of my phenol amounts added should have been less by a factor of 100. We will therefore redo the 0.1% and 0.01% films properly [the 0.1% and 0.01% solutions are ACTUALLY 10% and 1%].