User:Karlena L. Brown/Notebook/PVOH Research/2012/09/19

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  1. Prepare a PVOH film w/ a glutaldehyde deviation for film analysis
  2. Prepare clay samples w/ ratio and surfactant deviations for ion exchange experimentation
  3. Learn process of extracting and filtering out given magnetite (α – Fe3O4) sample in clay using vacuum filtration

Important Glutaldehyde Safety

  1. Glutaldehyde is toxic colorless liquid (100.12g / mole)
  2. Avoid all glutaldehyde skin contact by wearing gloves and googles
  3. Glutaldehyde should be kept in the freezer when not in use
  4. When in use, glutaldehyde should be kept in the fume hood
  5. Keep the glutaldehyde vial in a beaker so that it does not spill
  6. If spilled, wipe up glutaldehyde with paper towel while wearing gloves
  7. Keep all spills of glutaldehyde contained in the fume hood
  8. Wash hands after removing gloves that were in contact with glutaldehyde

Preparing Glutaldehyde Film

  • In 10mL beaker, weigh out ~ 0.5 grams PVOH (MW 22K)

(Actual Mass = 0.5141g)

  • 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, take the solution and place it in the fume hood
  • Allow the solution to cool to 40-50°C in the fume hood, and then add 0.5 mL 8% glutaraldehyde to the solution
  • Then pour the solution into a Teflon dish to sit, cool, and dry in the fume hood for ~ 2 days

Preparations For Clay Exchange


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