User:Moira M. Esson/Notebook/CHEM-581/2012/09/07: Difference between revisions
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'''Note''':Complete dissolution of the PVOH required a longer amount of stirring(~2hours) and the addition of more deionized H<sub>2<sub/>O. To prompt complete dissolution, solutions were transferred to larger beakers(~50mL) with larger amounts of H<sub>2<sub/>O. | '''Note''':Complete dissolution of the PVOH required a longer amount of stirring(~2hours) and the addition of more deionized H<sub>2<sub/>O. To prompt complete dissolution, solutions were transferred to larger beakers(~50mL) with larger amounts of H<sub>2<sub/>O. | ||
==Crosslinking PVOH Films== | ==Crosslinking PVOH Films== | ||
Standard Protocol for Crosslinking of films: | Standard Protocol for Crosslinking of films: | ||
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# Cut and weigh out ~ 280 - 320mg of PVOH film sample to place in the Tzezo pan | # Cut and weigh out ~ 280 - 320mg of PVOH film sample to place in the Tzezo pan | ||
# Once each sample is placed in the pan, then place the lid onto the pan | # Once each sample is placed in the pan, then place the lid onto the pan | ||
# Use a | # Use a Tzero press to secure and press the lid tightly over top the sample within the pan | ||
# Open TA instrument explorer on computer. Select instrument to be used(in this case DSC) | # Open TA instrument explorer on computer. Select instrument to be used(in this case DSC) | ||
# On control button, click event to create a new event | # On control button, click event to create a new event | ||
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# To modify a run, go to the experimental command and run a method edit | # To modify a run, go to the experimental command and run a method edit | ||
# Save all changes made to an experimental run in order to analyze samples | # Save all changes made to an experimental run in order to analyze samples | ||
<br> | <br> | ||
To Collect the information from the DSC: | To Collect the information from the DSC: |
Revision as of 15:59, 22 October 2012
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Objectives
PVOH(MW 130,000) Films
Prepared PVOH(MW 130,000) Films
Note:Complete dissolution of the PVOH required a longer amount of stirring(~2hours) and the addition of more deionized H2O. To prompt complete dissolution, solutions were transferred to larger beakers(~50mL) with larger amounts of H2O. Crosslinking PVOH FilmsStandard Protocol for Crosslinking of films:
Crosslinked PVOH Films:
Solubility of PVOH FilmsGeneral Protocol:
Viscosity of uncrosslinked PVOH(MW 22,000) 15wt% maleic acid
DSC on PVOH FilmsDSC will be used to determine the different thermal transitions of the various films General Protocol for DSC:
Notes
Observations
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