OBJECTIVES
- Continue fluorescence detection through pressure testing analysis of hydrogel samples (new modifications & better results)
Bent Pipette: Hydrogel Pressure Samples Tested 2
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 | 90:10 | 146K | 110% CEC NaMT w/ DMHXLBR | 0.1084
|
| 2 | 90:10 | 130K | NaMT | 0.1044
|
| 3 | 50:50 | 146K | 110% CEC NaMT w/ DMHXLBR | 0.1092
|
| 4 | 90:10 | 130K | 110% CEC Laponite w/ DMHXLBR | 0.1050
|
| 5 | 50:50 | 130K | NaMT | 0.1050
|
| 6 | 90:10 | 130K | Laponite | 0.1015
|
| 7 | 50:50 | 146K | 110% CEC Laponite w/ DMHXLBR | 0.1080
|
| 8 | 50:50 | 130K | Laponite | 0.1036
|
| 9 | 90:10 | 130K | 110% CEC NaMT w/ DMHXLBR | 0.1011
|
| 10 | 50:50 | 130K | 110% CEC Laponite w/ DMHXLBR | 0.1036
|
| 11 | 90:10 | 130K | 110% CEC NaMT w/ DMHXLBR | 0.1011
|
| 12 | 90:10 | 146K | Laponite | 0.1026
|
| 13 | 50:50 | 130K | 50% CEC NaMT w/ Bu3HdP+ | 0.1052
|
| 14 | 50:50 | 146K | Laponite | 0.1045
|
| 15 | 90:10 | 130K | 50% CEC NaMT w/ Bu3HdP+ | 0.1145
|
Notes
- The pipettes that provided the best fluorescence results for each sample were both the straight plastic pipette and 90° angle bent pipette
- All samples run maintained a composition incorporating Rhodamine 6G dye
- In comparison, the laponite incorporated hydrogels are squishy, clear, extremely adsorbent, and soft to touch
- The sodium montmorrillonite incorporated hydrogels are hard, dingy, flat, and dull colored (brownish appearance)
- For laponite samples, one can actually see the Rhodamine 6G dye added clearly within each hydrogel sample (reddish pink appearance)
- Also the sodium montmorrillonite samples in most cases began to grow a greenish type mold within the hydrogels
- All samples on 2/27/13 were tested using the bent pipette containing the 90° angle (See figure listed below)
Figure 1. Image of bent pipette used for pressure testing
|
PVOH Research
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