User:Elizabeth Ghias/Notebook/Experimental Chemistry/2013/03/08: Difference between revisions
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==Objective== | ==Objective== | ||
To modify PVOH with quaternary ammonium salt and to analyze DSC data from February and the agar plates prepared yesterday. | |||
==Description== | ==Description== | ||
<u>(S)-(-)-(3-Chloro-2-hydroxypropyl)trimethylammonium chloride Reaction</u> | |||
# Measure out 4 samples of 2 g PVOH (MW = 22,000) | |||
# Measure out 0.85779 g (S)-(-)-(3-Chloro-2-hydroxypropyl)trimethylammonium chloride. Place in 5 mL 0.2 M NaOH prepared last class) | |||
#* Actual amount used = 0.8581 g | |||
# Transfer 0.5 mL, 0.05 mL, and 0.005 mL into 4.5 mL, 4.95 mL and 4.995 mL 0.2 M NaOH, respectively (this means the 10% film will be slightly less than 10% but we can still calculate what percentage)→ using 10 mL total volume b/c were doing 2 gram scale. For 1 g scale use 5 mL. | |||
# Place the 4 samples of PVOH in 5 mL | |||
# Allow to soak in the NaOH for 30 minutes | |||
# Add 1 sample PVOH to one of the ammonium chloride samples and allow them to mix for 1 hour | |||
# If the PVOH is still soluble in NaOH, add acetone to precipitate it out. (keep water to a minimum) | |||
# Then do a quick wash with ice water to get precipitate out extra ions | |||
<u>Agar Plate Analysis</u> | |||
* The agar plates were visualized to compare the relative amount of bacteria growth that occurred overnight. | |||
* After being visualized, the plates were autoclaved and were disposed. | |||
<u>DSC Data Analysis</u> | |||
* For DSC data analysis, glass transitions were found and any peaks present were integrated. | |||
==Data== | ==Data== | ||
<u>Agar Plate Visualization</u> | |||
* For the agar plates, the only two plates that were observed to limit bacteria growth were plates 7 and 8, which both contained the highest amount of quaternary ammonium salt. | |||
<u>DSC Results</u> | |||
==Notes== | |||
Revision as of 13:36, 8 March 2013
Experimental Chemistry | <html><img src="/images/9/94/Report.png" border="0" /></html> Main project page <html><img src="/images/c/c3/Resultset_previous.png" border="0" /></html>Previous entry<html> </html>Next entry<html><img src="/images/5/5c/Resultset_next.png" border="0" /></html> |
ObjectiveTo modify PVOH with quaternary ammonium salt and to analyze DSC data from February and the agar plates prepared yesterday.
Description(S)-(-)-(3-Chloro-2-hydroxypropyl)trimethylammonium chloride Reaction
DataAgar Plate Visualization
DSC Results
Notes |