User:Andrew K Farag/Notebook/CHEM-581/2014/09/12: Difference between revisions

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## Prepare a crosslinked film with the exfoliated clay in a similar manner to your other films
## Prepare a crosslinked film with the exfoliated clay in a similar manner to your other films
# Powder Xray diffraction
# Powder Xray diffraction
## We will discuss X-ray diffraction
## The group will dry and set up the samples for use in the xrd instrument.  
## You will dry and set up your samples for use in the xrd instrument.  
## Dr. Hartings will show everyone how to use the instrument
## I will show everyone how to use the instrument
# Continue DSC analysis
# Continue DSC analysis
# Continue UVVis Analysis
# Continue UVVis Analysis
## We all need to have a discussion about what our possible sources of error are.
##set up new malachite green/PVA-film experiment.
## We may need to set up new malachite green/PVA-film experiment (just the PVA, not PVA clay at this point)
##my group set up the 8ppm malachite green.


==Data==
==Data==

Revision as of 10:07, 12 September 2014

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Objective

Start preparing new films using exfoliated clay. Perform XRD measurement. Continue analysis of DSC and UVVis.

Description

  1. Exfoliated Clays
    1. 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.
    2. To exfoliate clay, you stir it in water for 24 hours. (Luckily Dr. Fox has done this for us already).
    3. Stock solution 4% sodium montmorillonite
      1. Determine how to make a film such that you make a 10% clay (1g of PVA, ?? of exfoliated clay solution).
    4. Prepare a crosslinked film with the exfoliated clay in a similar manner to your other films
  2. Powder Xray diffraction
    1. The group will dry and set up the samples for use in the xrd instrument.
    2. Dr. Hartings will show everyone how to use the instrument
  3. Continue DSC analysis
  4. Continue UVVis Analysis
    1. set up new malachite green/PVA-film experiment.
    2. my group set up the 8ppm malachite green.

Data

PVA - malachite green absorption

  1. Mass of empty vials
    1. 2ppm sample: 16.3644g
    2. 8ppm sample: 16.2305g
    3. 20ppm sample: 16.4321g
    4. 200ppm sample: 16.2265g

Calculations

A 10% clay has 1g of PVA and should have .11g of exfoliated clay.

.11g of clay = (4% solution)x = (0.04)x

x = 2.75g of exfoliated clay solution

Actual mass of solution used was 2.5387g.




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