OBJECTIVES
Hydrogel Pressure Testing Protocol (Straight Pippette)
- Select a hydrogel for pressure analysis and measure out ~ 0.1 grams of the sample
- Next, using a razor blade cut the hydrogel for testing into small cubes in order to fit into the Pasteur pippette
- Once placing the sample in a Pasteur pipette, attach a rubber bulb to the top of the pipette, and allow 3mL of distilled H2O enter into the pipette by squeezing rubber bulb
- Progressively squeeze the bulb in order to expel the 3mL of H2O and apply a pressure to the hydrogels – dispensing Rhodamine 6G dye (dye leaching)
- Collect the expelled samples into a small 25mL beaker in order to fluorescence detection analysis
Microspheres: Separation & Vacuum Filtration Procedures
Hydrogel Pressure Samples Tested 3
RECALL HYDROGEL PRESSURE TESTING PROTOCOL ON 2/20/13 & FLUORESCENCE ANALYSIS PROCEDURES ON 2/13/13
Sample Order
|
PVOH vs. Clay Ratio
|
PVOH Type
|
Clay Selection
|
Amount of Hydrogel Used (g)
|
1 |
50:50 |
130K |
110% CEC NaMT w/ DMHXLBR |
0.1006
|
2 |
50:50 |
130K |
110% CEC NaMT w/ DMHXLBR |
0.1022
|
3 |
90:10 |
130K |
Laponite |
0.1031
|
4 |
50:50 |
146K |
110% CEC Laponite w/ DMHXLBR |
0.1066
|
5 |
90:10 |
130K |
110% CEC Laponite w/ DMHXLBR |
0.1083
|
6 |
90:10 |
130K |
110% CEC NaMT w/ DMHXLBR |
0.1003
|
7 |
50:50 |
130K |
110% CEC Laponite w/ DMHXLBR |
0.1036
|
8 |
50:50 |
146K |
Laponite |
0.1016
|
9 |
90:10 |
130K |
110% CEC NaMT w/ DMHXLBR |
0.1011
|
10 |
90:10 |
146K |
110% CEC NaMT w/ DMHXLBR |
0.1020
|
11 |
50:50 |
130K |
NaMT |
0.1024
|
12 |
50:50 |
130K |
50% CEC NaMT w/ Bu3HdP+ |
0.1015
|
13 |
50:50 |
146K |
110% CEC NaMT w/ DMHXLBR |
0.0998
|
14 |
90:10 |
130K |
50% CEC NaMT w/ Bu3HdP+ |
0.1026
|
Notes
|