User:Mary Mendoza/Notebook/CHEM 581: Experimental Chemistry I/2014/10/31: Difference between revisions
From OpenWetWare
Mary Mendoza (talk | contribs) |
Mary Mendoza (talk | contribs) |
||
Line 40: | Line 40: | ||
* Hence, I selected the top 5 least immiscible organic solvent according to their solubility in water (%w/w) as shown in the picture. | * Hence, I selected the top 5 least immiscible organic solvent according to their solubility in water (%w/w) as shown in the picture. | ||
* I first tested dimethyl sulfoxide (DMSO) and ethyl acetate. For DMSO, a quick formation of bead was observed but readily dispersed as it settled on the bottom of the tube. On the other hand, as the drop of PVA-clay-HCl passed through the ethyl acetate, the bead retained its shape for at least 5 to 7 seconds and gradually dispersed. | |||
* Without testing the remaining organic solvents, I chose ethyl acetate as my organic solvent. It had the suitable features such that it enables the bead formation and its slight immiscibility with water. | |||
[[Image:Solvents.png]] | * Next, it was time to test ethyl acetate with glutaraldehyde. The following amounts for the ethyl acetate trial were not exactly measured but made by approximation. I took a 50 mL beaker with a magnetic stir bar. I approximately added 15-20 mL of ethyl acetate. In a drop wise manner, I added my PVA-clay-HCl solution using a pasteur pipette. I added at least 500 uL of glutaraldehyde. | ||
* With this experimental set-up, I was able to form beads but had to resolve the ratio of materials I used since everything was performed by approximation. | |||
[[Image:Solvents.png|center]] | |||
Revision as of 10:01, 11 December 2014
Project name | <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> |
Continuation of Bead Synthesis Trials
Description
Hexane Trial
Organic-Glutaraldehyde Solution
Trial of Several Organic Solvents
Acetonitrile Trial
|