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 PVOH Research
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OBJECTIVES
- Prepare PVOH films for Acetylation Reactions
Acetylation Reaction Protocol & Film Preparation
- In 10mL beaker, weigh out ~ 1.0 grams PVOH (MW 22K)
- Then, using a graduated cylinder add ~ 5 mL H2O to the beaker
- After adding and combining PVOH (MW 22K) in a small beaker with H2O, add a stir bar and prepare to stir solution
- On hot plate, stir and heat beaker solutions at 70-80°C for ~ 12 min or until PVOH dissolves
- Once PVOH solids thoroughly dissolve in solution, add a small portion of acetic acid (HoAc)
- In addition, add ~2 drops of HCl to the solution and continue to stir for an hour
- Allow the solution to cool and prepare for titration
REPEAT PROCEDURE ABOVE FOUR TIMES TO PREPARE FOUR FILMS
| PVOH Mass (g)
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Acetic Acid (mL)
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Hydrochloric Acid (drops)
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| 1.0062 |
1.30 |
2
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| 1.0043 |
0.26 |
2
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| 1.0052 |
0.52 |
2
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| 1.0027 |
0.78 |
2
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Acetylation Reaction Film Preparation
Acetylation Reaction Calculations
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PVOH Research
