Objective
Conductivity of PVOH films
Description
Measure the conductivity of a PVOH film crosslinked with glutaraldehyde (see 9/14/12 for procedure) at different time intervals.
Data
cell constants: 0.4663 (orion versa star) 0.479 (orion 5 star)
The following solutions were used on either side of the film
- ion solution of 100ppm Cl-, 100ppm Br-, 100ppm SO4 2- (as Na+ salts) (initially at 18.2mL, 29.0mL with probe inserted)
- HPLC grade water (initially at 18.7mL, 31.0mL with probe inserted)
Time (min) |
Conductivity (μS), ion soln |
Conductivity (μS), water
|
0 |
730 |
10.25
|
5 |
730 |
10.49
|
10 |
730 |
10.50
|
15 |
730 |
10.57
|
30 |
730 |
10.65
|
60 |
731 |
10.72
|
90 |
731 |
10.84
|
120 |
732 |
10.90
|
150 |
732 |
10.98
|
Notes
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