User:Elizabeth Ghias/Notebook/Experimental Chemistry/2012/08/31: Difference between revisions
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To create crosslinked films through acid catalyzed dehydration and to perform viscosity tests. | To create crosslinked films through acid catalyzed dehydration and to perform viscosity tests. | ||
==Description== | ==Description== | ||
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Film 1 - 0.5110 g PVA in 3 mL water, no acid was added | Film 1 - 0.5110 g PVA in 3 mL water, no acid was added | ||
Film 2 - 0.5053 g PVA in 3 mL water, 2 drops of phosphoric acid was added | Film 2 - 0.5053 g PVA in 3 mL water, 2 drops of phosphoric acid was added | ||
Film 3 - 0.5078 g PVA in 3 mL water, 2 drops of 12 M hydrochloric acid was added | Film 3 - 0.5078 g PVA in 3 mL water, 2 drops of 12 M hydrochloric acid was added | ||
Film 4 - 1.0084 g PVA in 6 mL water, no acid was added | Film 4 - 1.0084 g PVA in 6 mL water, no acid was added | ||
Film 5 - 1.0010 g PVA in 6 mL water, 3 drops of phosphoric acid was added | Film 5 - 1.0010 g PVA in 6 mL water, 3 drops of phosphoric acid was added | ||
Film 6 - 1.0044 g PVA in 6 mL water, 3 drops of 12 M hydrochloric acid was added | Film 6 - 1.0044 g PVA in 6 mL water, 3 drops of 12 M hydrochloric acid was added | ||
<u>Viscosity Tests (Part 1)</u> | |||
The viscosity of the MW = 130,000 PVA and the MW = 22,000 PVA were measured. | |||
<u>MW = 130,000 PVA Solution Preparation</u> | |||
{|style="width:400px" | |||
|<u>% wt/mL</u> | |||
|<u>Calculated g/mL</u> | |||
|<u>Mass Used</u> | |||
|<u>Total Volume</u> | |||
|- | |||
|2% wt/mL | |||
|0.02 g/mL | |||
|0.406 g | |||
|20 mL | |||
|- | |||
|1% wt/mL | |||
|0.01 g/mL | |||
|0.204 g | |||
|20 mL | |||
|- | |||
|0.5% wt/mL | |||
|0.005 g/mL | |||
|0.101 g | |||
|20 mL | |||
|- | |||
|0.2% wt/mL | |||
|0.002 g/mL | |||
|0.041 g | |||
|20 mL | |||
|} | |||
# Approximately 10 mL of the first solution tested was poured into the viscometer. | |||
# The time it took for the sample to travel between the two lines marked on the viscometer were recorded. | |||
# The test was repeated 2 or 3 times for each sample | |||
# After the first solution was removed, 10 mL of the next solution was added to the viscometer to rinse out the previous solution. | |||
# Steps 1 - 4 were repeated for all of the remaining solutions. | |||
==Data== | ==Data== | ||
<u>Viscosity Test Results (Part 1)</u> | |||
{|style="width:400px" | |||
|<u>% wt/mL</u> | |||
|<u>Time 1</u> | |||
|<u>Time 2</u> | |||
|<u>Time 3</u> | |||
|<u>Average Time</u> | |||
|- | |||
|2% wt/mL | |||
|9.35s | |||
|9.48 s | |||
|9.51 | |||
|9.45 s | |||
|- | |||
|1% wt/mL | |||
|6.46 s | |||
|6.16 s | |||
|n/a | |||
|6.31 s | |||
|- | |||
|0.5% wt/mL | |||
|4.42 s | |||
|4.47 s | |||
|n/a | |||
|4.445 s | |||
|- | |||
|0.2% wt/mL | |||
|4.09 s | |||
|4.11 s | |||
|n/a | |||
|4.10 s | |||
|} | |||
==Notes== | ==Notes== |
Revision as of 09:42, 1 October 2012
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ObjectiveTo create crosslinked films through acid catalyzed dehydration and to perform viscosity tests.
DescriptionFilm Preparation with Acid Dehydration
Film 1 - 0.5110 g PVA in 3 mL water, no acid was added Film 2 - 0.5053 g PVA in 3 mL water, 2 drops of phosphoric acid was added Film 3 - 0.5078 g PVA in 3 mL water, 2 drops of 12 M hydrochloric acid was added Film 4 - 1.0084 g PVA in 6 mL water, no acid was added Film 5 - 1.0010 g PVA in 6 mL water, 3 drops of phosphoric acid was added Film 6 - 1.0044 g PVA in 6 mL water, 3 drops of 12 M hydrochloric acid was added
The viscosity of the MW = 130,000 PVA and the MW = 22,000 PVA were measured.
DataViscosity Test Results (Part 1)
NotesThis area is for any observations or conclusions that you would like to note.
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