User:Mobeen Ashraf/Notebook/Chem-581/2012/09/07: Difference between revisions
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==Objective== | ==Objective== | ||
Solubility Test for Cross-linked and Not Cross-Linked PVOH Films | |||
==Description== | ==Description== |
Revision as of 12:30, 26 September 2012
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ObjectiveSolubility Test for Cross-linked and Not Cross-Linked PVOH Films DescriptionSolubility Test for Non Cross-Linked and Cross Linked PVOH Films. Three films of PVOH were made and were labelled as A, B, and C. A contains .5 g PVOH, MW of 22,000 in 5 ml of water. B contains 0.5 g PVOH, MW of 22,000, in 5 ml of water and phosphoric acid. C contains 0.5 g PVOH, MW of 22,000 in 5 ml of water, maleic acid, and phosphoric acid. We also prepared thin films of 0.1 g PVOH, having the molar masses of 22,000 and 100,000. Cross linking of the films were done by heating films into the oven set up at a temperature of 120 degree Celsius for 90 mins. Solubility Test with out Heating (dry films): 0.1014 g of A, starting time: 1:45 pm, ending time: 2:17 pm > Completely Soluble 0.1000 g of B, starting time: 1:20 pm, ending time: 1:45 pm > Completely Soluble 0.1051 g of C, starting time: 2:17 pm, ending time: 2:35 pm > Completely Soluble Solubility Test with the Oven Films (Cross-Linked): 0.1 g of A, starting time: 2:35 pm, ending time: 3:00 pm > completely soluble 0.1 g of B, starting time: 3:00 pm, ending time: 3:30 pm > completely soluble 0.1 g of C, starting time: 3:00 pm, ending time: 3:30 pm > not dissolved, insoluble Data
NotesThis area is for any observations or conclusions that you would like to note.
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