User:Moira M. Esson/Notebook/CHEM-581/2013/04/19

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Objectives

  • Perform pressure testing of microspheres.
  • Run X-ray diffraction on a plain safflower oil sample, a plain PVA MW 130 sample, and a PVA 146 microsphere sample that ended up becoming a hydrogel.
  • Finish running DSC on a Rhodamine 6G sample(this was unable to be run last time due to lack of gas).


Pressure Testing

  • The general protocol for pressure testing described on 2013/04/17 was followed.

Figure 1. Pressure testing of prepared microspheres.
Pressure test micros.png

X-ray

General Protocol:

  1. Use a Kimwipe and acetone to thoroughly clean the low background sample holder
  2. Insert Sample into the low background holder. Note: Must make sure that the sample is completely flat and that the particle sample size is very small. If the sample is too large, use a mortar and pestle to completely grind the sample
  3. Turn on the chiller
  4. Turn on Miniflex II. This is the white button on the machine
  5. Turn on X-ray. The machine will be on when the red lights on the button labeled x-ray light up
  6. Using a Geiger counter, test the radiation from the machine
  7. Set sample in sample holder and record sample holder number
  8. Close the door to the x-ray
  9. Open software on computer


  • The samples will be posted when received.