User:Moira M. Esson/Notebook/CHEM-581/2012/11/09: Difference between revisions
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|style="background-color: #EEE"|[[Image:owwnotebook_icon.png|128px]]<span style="font-size:22px;"> Project name</span> | |style="background-color: #EEE"|[[Image:owwnotebook_icon.png|128px]]<span style="font-size:22px;"> Project name</span> | ||
|style="background-color: #F2F2F2" align="center"| | |style="background-color: #F2F2F2" align="center"|[[File:Report.png|frameless|link={{#sub:{{FULLPAGENAME}}|0|-11}}]][[{{#sub:{{FULLPAGENAME}}|0|-11}}|Main project page]]<br />{{#if:{{#lnpreventry:{{FULLPAGENAME}}}}|[[File:Resultset_previous.png|frameless|link={{#lnpreventry:{{FULLPAGENAME}}}}]][[{{#lnpreventry:{{FULLPAGENAME}}}}{{!}}Previous entry]] }}{{#if:{{#lnnextentry:{{FULLPAGENAME}}}}|[[{{#lnnextentry:{{FULLPAGENAME}}}}{{!}}Next entry]][[File:Resultset_next.png|frameless|link={{#lnnextentry:{{FULLPAGENAME}}}}]]}} | ||
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Polyvinyl alcohol + [HAc]→Polyvinyl acetate | Polyvinyl alcohol + [HAc]→Polyvinyl acetate | ||
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==General Protocol for Polyvinyl acetate synthesis== | ==General Protocol for Polyvinyl acetate synthesis== | ||
#For a 1:1 ratio of polyvinyl alcohol OH groups to polyvinyl acetate dissolve ~1g PVOH inH<sub>2</sub>O | #For a 1:1 ratio of polyvinyl alcohol OH groups to polyvinyl acetate dissolve ~1g PVOH inH<sub>2</sub>O |
Latest revision as of 22:14, 26 September 2017
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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
1g PVOH x (1mol PVOH/44g PVOH) x (1mol HAc/1mol PVOH) x (60g HAc/1mol HAc)= 1.36g HAc 1.36g HAc x (1mL/1.05g HAc)= 1.295mL HAc (B.) 20% ratio 1gPVOH x (1mol PVOH/44g PVOH) x (0.2mol HAc/1mol PVOH) x (60g HAc/1mol HAc)= 0.273g HAc 0.273g HAc x (1mL/1.05g HAc)=0.26mL HAc (C.) 40% ratio 1gPVOH x (1mol PVOH/44g PVOH) x (0.4mol HAc/1mol PVOH) x (60g HAc/1mol HAc)= 0.545g HAc 0.5195g HAc x (1mL/1.05g)= 0.5195mL HAc (D.) 60% ratio 1gPVOH x (1mol PVOH/44g PVOH) x (0.6mol HAc/1mol PVOH) x (60g HAc/1mol HAc)= 0.818g HAc 0.818g HAc x (1mL HAc/ 1.05g)= 0.779mL HAc
0.2L x (1mol/1L) x (84.01g/1mol)= 16.802g sodium bicarbonate.
1M PHP= x/0.1L x=0.1mol x 204.24g/mol x= 20.424g PHP needed Solution Preparations
Actual amount of PVOH measured:
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