User:Klare Lazor/Notebook/Chem-496-001/2013/02/04

Objective

1. Cross‐link films
2. Make more fixant
3. DSC and FTIR after cross-­‐linking.
4. synthesize quaternary ammonium

Description

Cross-linking PVOH+Isopropyl+glutaraldehdye

1. Allow the PVOH film containing glutaraldehyde to dry completely.
2. Prepare a solution of 100 mL H2O, 2 mL concentrated H2SO4, and 20 g Na2SO4 in a 150 mL beaker. (solution is referred to as glutaraldehyde fixant)
3. Place stir bar in beaker and a Buchner funnel top (cap) over the stir bar
4. Heat solution to 70°C (temperature on hotplate should be about 160)
5. Place film in solution for one hour.
6. Prepare 100 mL of a 1% HCl solution in a 150 mL beaker. Place a stir bar and an inverted buchner funnel into beaker.
7. Heat HCl solution to 70°C
8. Remove film from glutaraldehyde fixant and rinse with distilled water.
9. Place film into HCl solution for 30 minutes.
10. Prepare 0.2 M sodium bicarbonate solution. (1.68 g in 100 mL)
11. After 30 minutes, remove the film from the HCl solution and place into the sodium bicarbonate solution (at room temperature) for about 15 minutes.
12. Use tweezers to remove the film from the sodium bicarbonate solution.
13. Rinse film with deionized water and place in a beaker with distilled water until it is used/tested

Synthesis of Ammonium Salt

• Added 4-chloro-1-butanol (Eastman) and Triethylamine in acetonitrile for 3 days to reflux.

Matt Hartings I need more than this, Klare. How much did you add? The reaction is stirring. It's running under nitrogen. You're heating with a heating mantle. This is the first time you've done this, and, certainly, the first time its shown up in your lab notebook. I need a little bit more than this.

Results of films after cross linking

• No sodium sulfate high molecular weight low solubility.... Don't use both can use either... DSC and IR still
• Isopropyl evaporate off before it could cross link over the weekend
• phenol or benzyl alcohol soluble in water
• 1 gram
• Were tearing need DSC and IR. Prediction of isopropyl evaporate from the films over the weeked :(

Data

• Add data and results here...

Notes

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