Objectives
- Crosslink remaining glutaraldehyde films
- Run atomic absorption on CuSO4 solutions prepared on 2012/10/03
- Prepare pH adjusted NaSO4 solutions to test pH.
*NaSO4 solutions were prepared 2012/9/21
Crosslinking
Note: Films crosslinked on 10/03/2012 still remained intact in deionized H2O despite using too little glutaraldehyde.
The General Protocol for crosslinking Glutaraldehyde films described on 9/14/2012 was used
- Films that were crosslinked
- PVOH MW 22,000 1g with 1mL glutaraldehyde(GA)+0.104gNaMT(prepared 10/03/2012)
- PVOH MW 22,000 1g with 1mL GA+0.1022g 100%CEC clay (prepared 10/03/2012)
- PVOH MW 22,000 1g with 1mL GA+0.100g 50%CEC clay (prepared 10/03/2012)
- PVOH MW 22,000 with 1mL GA
Note: All GA films were cut in half prior to crosslinking. Remaining uncrosslinked glutaraldehyde films remained under the fume hood
Crosslinking Glutaraldehyde films
'
|
PVOH MW 22,000+ 1mL glutaraldehyde+0.1010g 100% CEC surfactant clay
|
PVOH MW 22,000+ 1mL glutaraldehyde+NaMT
|
PVOH MW 22,000+ 1mL glutaraldehyde
|
PVOH MW 22,000+ 1mL glutaraldehyde+50% CEC surfactant clay
|
Mass of film half before crosslinking(g) |
0.7665 |
0.04691 |
0.4678 |
0.4691
|
Amount solution 1 added(mL) |
100.0 |
100.0 |
100.0 |
100.0
|
Amount of 1% aqueous HCl added (mL) |
100.0 |
100.0 |
98.0 |
99.5
|
Amount of 0.2M sodium bicarbonate solution added(mL) |
100.0 |
100.0 |
100.0 |
100.0
|
Amount of Sodium Bicarbonate added to sodium bicarbonate solution(g) |
1.6895 |
1.6844 |
1.6970 |
1.6803
|
Mass of film after crosslinking (g) |
1.3971 |
0.9621 |
0.8521 |
0.9567
|
|