User:Klare Lazor/Notebook/Chem-496-001/2013/02/11: Difference between revisions
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==Description== | ==Description== | ||
'''Film description from 7/8 Friday''' | |||
* 1% Phenol looked the best for the film with mw: 146,000-186,000 | |||
* .1% and 10% crystals were forming either phenol or pvoh or both | |||
* concluded to high of a molecular late the crystals were most likely pvoh recrystalizing | |||
* will still attempt to crosslink and dsc on the flat areas of the films | |||
'''Crosslinking PVOH (MW:146,000-186,000) Films With 0.7M HCl and neutralizing .6 Molar sodium bicarbonate''' | '''Crosslinking PVOH (MW:146,000-186,000) Films With 0.7M HCl and neutralizing .6 Molar sodium bicarbonate''' | ||
*To high of a molecular weight will remake with with a lower molecular weight | *To high of a molecular weight will remake with with a lower molecular weight | ||
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**20ml* 1.84g/ml ÷ 98.079g/mol = 0.375moles of H2SO4 ÷ 1 Liter= 0.369 Molar H2SO4 | **20ml* 1.84g/ml ÷ 98.079g/mol = 0.375moles of H2SO4 ÷ 1 Liter= 0.369 Molar H2SO4 | ||
** assume complete dissociation | ** assume complete dissociation | ||
** 0.369mols of H2SO4/L * 2mols HCl/1mol of H2SO4 = 0.7M HCl, which is equal to 6ml of 12 M HCl in 94 ml of H2O | ** 0.369mols of H2SO4/L * 2mols HCl/1mol of H2SO4 = 0.7M HCl, which is equal to 6ml of 12 M HCl in 94 ml of H2O for 1 Hour | ||
* To neutralize a NaHCO3 solution will be made, 0.7 M NaHCO3 | * To neutralize a NaHCO3 solution will be made, 0.7 M NaHCO3 15 minutes | ||
''' Switching to lower molecular weight: PVOH (MW: 22,000) + phenol + glutaraldehyde + 30 ml of water''' | ''' Switching to lower molecular weight: PVOH (MW: 22,000) + phenol + glutaraldehyde + 30 ml of water''' | ||
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**.01%= 0.01 ml of stock | **.01%= 0.01 ml of stock | ||
** 10%= whatever ml left over will end up close to 10% will calculate after measuring how much stock is left over | ** 10%= whatever ml left over will end up close to 10% will calculate after measuring how much stock is left over | ||
*During mixing of pvoh bubbles were forming which was making it hard for a homologous solution | |||
==Data== | ==Data== |
Revision as of 12:15, 11 February 2013
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ObjectiveDescriptionFilm description from 7/8 Friday
Switching to lower molecular weight: PVOH (MW: 22,000) + phenol + glutaraldehyde + 30 ml of water
Data
NotesThis area is for any observations or conclusions that you would like to note.
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