User:Moira M. Esson/Notebook/CHEM-581/2012/11/09: Difference between revisions
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==Calculations== | ==Calculations== | ||
*Overall, want to determine if have 1g of material how many moles of -OH groups. Once that is determined, will want to determine how many moles of -OH was reacted after the reaction. | |||
'''Number of moles of OH groups in 1g PVOH''': | |||
MW of repeating polyvinyl alcohol unit [C<sub>2</sub>H<sub>3</sub>OH]: 44.06g/mol | |||
[http://www.britannica.com/EBchecked/topic/469236/polyvinyl-alcohol-PVA Polyvinyl alcohol repeating unit picture] | |||
1gPVOH(1mol PVOH unit/44.06g) x (1mol OH/1mol PVOH unit)= 0.022696 mol OH/g | |||
'''Dye attachment calculations''': | |||
*Want to react .01% of the OH groups with the dye | |||
MW 5-DTAF dye: 495.28g/mol | |||
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(0.0227mol OH/g) x (.0001)= 2.27x10<sup>-6</sup> moles dye | |||
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2.27x10<sup>-6</sup> moles dye x(495.28g dye/1mol dye)=0.001124g dye | |||
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Revision as of 13:37, 26 November 2012
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Objectives
General Formula for reactionsPolyvinyl alcohol + [HAc]→Polyvinyl acetate
General Protocol for Polyvinyl acetate synthesis
Calculations
Number of moles of OH groups in 1g PVOH: MW of repeating polyvinyl alcohol unit [C2H3OH]: 44.06g/mol Polyvinyl alcohol repeating unit picture 1gPVOH(1mol PVOH unit/44.06g) x (1mol OH/1mol PVOH unit)= 0.022696 mol OH/g Dye attachment calculations:
MW 5-DTAF dye: 495.28g/mol
(0.0227mol OH/g) x (.0001)= 2.27x10-6 moles dye
2.27x10-6 moles dye x(495.28g dye/1mol dye)=0.001124g dye |