User:Allison K. Alix/Notebook/CHEM-581/2012/10/05

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Conductivity of PVOH films


Measure the conductivity of a PVOH film crosslinked with glutaraldehyde (see 9/14/12 for procedure) at different time intervals.


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


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