Objective
Description
Conductivity of PVOH film
 Conductivity of PVOH was measured by using Thermo Scientific and Orion Versa Star.
 The probes were platinium,
 The cell constant for Thermo Scientific was 0.479.
 The cell constant for Orion Versa Star was 0.4663.
 After placing the film between two columns, a solution containing 100 ppm Cl, 100 ppm Br and 100 ppm SO42(as Na+ salts, in to the left column. Place HPLC water to the right column.
 Initial height for left column is 18.2 cm.
 Initial height for right column is 18.7 cm.
Data
 Final height of each column was not recorded as there was a leak between the columns.
Time Left column Right column
t=0 730us/cm 10.25us/cm
5 min
t=1 730us/cm 10.49us/cm
5 min
t=2 730us/cm 10.49us/cm
15 min
t=3 730us/cm 10.57us/cm
15min
t=4 731us/cm 10.65us/cm
30min
t=5 731us/ cm 10.72us/cm
30min
t=6 731us/cm 10.84us/cm
30min
t=7 732us/cm 10.84us/ cm
30min
t=8 732us/cm 10.90us/cm
 The conductivity after a week was not recorded because of the leak. The leak also prevent measurement of final height of the solutions in the column.
Notes
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