User:Mary Mendoza/Notebook/CHEM 581: Experimental Chemistry I/2014/09/17: Difference between revisions

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* Using quartz cuvettes, absorbance of 2 mL malachite green samples were collected.
* Using quartz cuvettes, absorbance of 2 mL malachite green samples were collected.
* 80 and 200 ppm malachite green samples were diluted to 100x and 50x, respectively.
* 80 and 200 ppm malachite green samples were diluted to 100x and 50x, respectively.
* The absorbance of each sample are listed on the table posted.


==Centrifuge of Ionic Liquid Exchange==
==Centrifuge of Ionic Liquid Exchange==

Revision as of 22:54, 29 September 2014

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Collection of DSC data

  • Jacob Esenther extracted the DSC data from the Qseries interface, TA Universal Analysis. The data was compiled in a table below:
PVA Conc. (ppm) ' Energy (J/g) H₂0 (mg) Glass Transition (⁰C) Water Evaporation Peak (⁰C)
2 928.4 1.3239 69.11 and 79.8 108.58
8 1001 1.9796 68.77 99.31
80 1340 2.9384 68.338 105.91
200 819.4 1.0803 68.63 128.77
Control 582.9 0.95407 68.566 125.61
PVA-Clay 2 1303 1.8931 68.716 100.97
8 883.8 1.4585 68.644 99.59
80 861.3 2.2633 68.866 102.05, 106.55, and 128.44
200 N/A N/A N/A N/A
Control 671.2 0.90296 69.164 116.15 and 105.16
  • James Schwabacher prepared the following graphs from the DSC:
Polyvinyl Alcohol Film
Polyvinyl Alcohol Film in 2 ppm malachite green
Polyvinyl Alcohol Film in 8 ppm malachite green
Polyvinyl Alcohol Film in 80 ppm malachite green
Polyvinyl Alcohol Film in 200 ppm malachite green
PVA-sodium montmorillonite film
PVA-sodium montmorillonite film in 2 ppm malachite green
PVA-sodium montmorillonite film in 8 ppm malachite green
PVA-sodium montmorillonite film in 80 ppm malachite green
PVA-sodium montmorillonite film in 200 ppm malachite green
  • A closer look of the PVA-sodium montmorillonite film indicates that there is no defined glass transition as shown below:
PVA-sodium montmorillonite film in 200 ppm malachite green; no defined glass transtion curves

UV-Vis of MG-PVA samples

  • Using quartz cuvettes, absorbance of 2 mL malachite green samples were collected.
  • 80 and 200 ppm malachite green samples were diluted to 100x and 50x, respectively.
  • The absorbance of each sample are listed on the table posted.

Centrifuge of Ionic Liquid Exchange

Powder X-RAY Diffraction of MG-PVA-clay samples

Completion of Exfoliated Clay Film Synthesis


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