User:Elizabeth Ghias/Notebook/Experimental Chemistry/2012/09/19: Difference between revisions
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==Objective== | ==Objective== | ||
To crosslink the prepared glutaraldehyde film, make additional glutaraldehyde film, prepare 500 mL of 20 ppm CuSO<sub></sub> solution and NaSO<sub>4</sub> solution, and dry clays | To crosslink the prepared glutaraldehyde film, make additional glutaraldehyde film and glutaraldehyde film with PDMS, prepare 500 mL of 20 ppm CuSO<sub></sub> solution and NaSO<sub>4</sub> solution, and dry clays | ||
==Description== | ==Description== | ||
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<u>Preparing Glutaraldehyde Film</u> | |||
# 0.5 g PVOH was dissolved in 5 mL water on a heated hot plate. | |||
# Once dissolved, 0.8% wt Glutaraldehyde solution (1 mL) was added. | |||
# The gel was then poured into a plastic dish and was allowed to evaporate over the weekend. | |||
<u>Preparing PDMS Film</u> | |||
* Prepared as previous film but with 10% PVOH replaced with glutaraldehyde | |||
# 0.4 g PVOH and 0.1 g PDMS were dissolved in 5 mL of water on a hot plate. | |||
# Once dissolved, 1 mL of glutaraldehyde was added to the PVOH/PDMS | |||
# The mixture was allowed to stir without heat for 3 minutes | |||
# The film was poured into a dish and was left under the hood over the weekend | |||
<u>20 ppm CuSO<sub>4</sub> and Na<sub>2</sub>SO<sub>4</sub> Solution Preparation</u> | |||
* 500 mL of 20 ppm CuSO<sub>4</sub> solution and 500 mL of 20 ppm Na<sub>2</sub>SO<sub>4</sub> solution were prepared. | |||
<s>*200 g Na2So4, 1L H2O stirred to dissolution + 20ml H2 So4 </s> | |||
<s>*MW CuSO4 * 5 H20= 249.67 g/mole 20 ppm in 500ml H2O MW= 18 g/mol (500g of h20/18g/mol=27.7moles) </s> | |||
<s>**27.7moles h2O* ((20moles cuso4*5H2O)/1,000,000 moles H2O) = 5.55 E -4 moles Cuso4*5molesH20 </s> | |||
<s>**5.55E-4moles CuSo4*5H2O * 249.68 g/mol= 0.1387g CuSo4*5H2O </s> | |||
<s>**5.55E-4moles Na2SO4 * 142.04g/mol=0.078 (20ppm) </s> | |||
<s>*we want 500ml of 20ppm = 20mg/l CuSO4</s> | |||
<s>** 277.4mg/l*x=.5*20mg/l</s> | |||
<s>** x=36.05ml in total 100ml solution</s> | |||
<s>* we want 500ml of 20ppm= 20mg/l Na2SO4</s> | |||
<s>** 156.8 mg/l x = .5(20mg/L)v | |||
<s>** x= 63.78ml in total 100ml solution</s> | |||
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==Notes== | ==Notes== | ||
* The copper sulfate and sodium sulfate solutions prepared were incorrect. See October 5 for correct calculations | |||
Revision as of 09:26, 7 November 2012
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ObjectiveTo crosslink the prepared glutaraldehyde film, make additional glutaraldehyde film and glutaraldehyde film with PDMS, prepare 500 mL of 20 ppm CuSO solution and NaSO4 solution, and dry clays DescriptionCrosslinking Glutaraldehyde Films
DataMass of glutaraldehyde film after crosslinking = 0.8059 g
Notes
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