User:Mary Mendoza/Notebook/CHEM 581: Experimental Chemistry I/2014/09/12

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Powder Xray diffraction

  • Performing xrd measurements was postponed due to technical issues (password was unknown). Samples were stored back in student drawers.
  1. New Malachite Green experiment with PVA films
    1. New stock solutions of Malachite Green Concentrations were made.
      1. made the 2ppm solution. This was done with 1ml of 200ppm Malachite Green and 99mL of H2O.
      2. 200 ppm M.G. made by Madeline Bee and calculations can be found on her page.
      3. 80ppm M.G. made by Rebeca Rodriguez and calculations can be found on her page.
      4. 8ppm M.G. made by [Farag] and calculations can be found on his page.
      5. 2ppm M.G. made by [[1]] in my group. This was done with 1ml of 200ppm Malachite Green and 99mL of H2O.
    2. Pieces of PVA film were cut and placed in a vial with 10mL of Malachite Green solution.
    3. Control solutions of 200ppm and 2ppm were made

Preparation of Exfoliated Film

  • Added 0.9996 g of PVA into 2.7756 g of the liquefied, 4% sodium montmorillonite solution to make a 10% wt clay. A volume of 7 mL distilled water was added to the mixture.
  • The mixture was left stirring for a week.

Suspension of PVA films in Malachite Green


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