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

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The following solutions were used on either side of the film  
The following solutions were used on either side of the film  
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* ion solution of 100ppm Cl<sup>-</sup>, 100ppm Br<sup>-</sup>, 100ppm SO<sub>4</sub> <sup>2-</sup> (as Na+ salts) (initially at 18.2mL, 29.0mL with probe inserted)
+
* ion solution of 100ppm Cl<sup>-</sup>, 100ppm Br<sup>-</sup>, 100ppm SO<sub>4</sub> <sup>2-</sup> (as Na<sup>+</sup> salts) (initially at 18.2mL, 29.0mL with probe inserted)
* HPLC grade water (initially at 18.7mL, 31.0mL with probe inserted)
* HPLC grade water (initially at 18.7mL, 31.0mL with probe inserted)

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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

This area is for any observations or conclusions that you would like to note.


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