User:Eleni N. Kalivas/Notebook/CHEM-571/2014/11/05

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Objective

  • weigh out PVAC ribbons and soak in 20 ppm Malachite Green and UV-vis in 10 min increments
  • Prepare dried PVAC ribbons for pXRD and DSC
  • Begin new bead synthesis for PVAC

Protocol

  1. The Malachite Green solution was made and after UV-vis was found to be at a concentration of 20.2ppm
    1. Dilution of .5mL of 20ppm into 5mL for a total concentration of 2ppm total to be measured with UV-vis
    2. 1.4163g of PVAC ribbons were placed into 10 mL of 20ppm Malachite Green Solution
  2. DSC preparation
    1. Tzero Pan weight: 0.04192g
    2. Tzero Pan and PVAC ribbons weight: 0.04494g
    3. Tzero Pan, PVAC ribbons and Lid weight: 0.05539g
    4. Total weight of PVAC ribbons in pan: 3.02mg
  3. pXRD Preparation: Take dried PVAC ribbons and condense them onto a pXRD plate
  4. New Bead Synthesis
    1. Weigh out 0.5020g of PVA and 0.0565g of Montmorillonite clay into 6mL of 10% HCl stir over heat until everything is dissolved
    2. Add 20mL Ethyl Acetate and 0.75mL of glutaraldehyde to a beaker with a stir bar and spin the solution
    3. Start Adding the PVAC solution drop wise to the ethyl acetate and glutaraldehyde
    4. After about 3 minutes add another 0.75mL of glutaraldehyde to the solution
    5. Once the finished adding the PVAC solution, add 25mL of sodium bicarbonate
    6. Centrifuge the sample at 3000rpm at 4 degrees celsius for one minute
  • Note: After centrifugation there seemed to be a suspension of two different levels of bead separation, so the two were extracted separately and stored in different vials in water


pXRD

  • Madeleine 2
  • James 3
  • Tami 4
  • Eleni 5

DSC

  • Madeleine 22
  • James 23
  • Tami 24
  • Eleni 25

Data

  • UV-Vis of PVAC Ribbon absorptions of Malachite Green