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Objective
A new film was synthesized but using a 4% exfoliated clay. XRD measurements were preformed on previously tested films. Analysis of DSC and UV-Vis data was continued.
Description
- Exfoliated Clays
- An exfoliated clay has had all of its layers separated from one another. Instead of having layers in water, you have single sheets of material. This should change the absorption properties of the clay. We are going to test PVA-exfoliated clay materials against the regular PVA-clay material.
- To exfoliate clay, you stir it in water for 24 hours.
- These were prepared by Dr. Fox before showing up to the lab.
- Stock solution 4% sodium montmorillonite
- To make a 10% solution, we need the equivalent of 0.11g Na Montmorillonite from the 4% stock. Calculations showed 2.75 grams of the 4% NaMt is necessary
- Calculations cannot be done with volumetric measurements because the stock solution has a higher viscosity than water.
- Prepare a crosslinked film with the exfoliated clay in a similar manner to your other films. The procedure may be viewed here.
- Powder Xray diffraction
- The procedure for Xray diffraction begun
- Samples prepared on September 10 were dried and set up for use in the instrument.
- A control PVA-Clay film was also set up for use.
- Continue DSC and UV-Vis Analysis
- A discussion as to the sources of error from the previous results occurred.
- We came to the conclusion that ...
- New Malachite Green experiment with PVA films
- New stock solutions of Malachite Green Concentrations were made.
- I made the 2ppm solution. This was done with 1ml of 200ppm Malachite Green and 99mL of H2O.
- The 200ppm solution was made by Madeline
- The 80ppm solution was made by ...
- The 8ppm solution was made by ...
- Pieces of PVA film were cut and placed in a vial with 10mL of Malachite Green solution.
- Control solutions of 200ppm and 2ppm were made
Data
- Add data and results here...
Notes
This area is for any observations or conclusions that you would like to note.
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Biomaterials Design Lab
