Comparison of water transport through PIM-1 membrane when membrane is exposed to vapor or liquid on the feed side.
| Sample | Vapor permeance (m3(STP) m−2 h−1 bar−1) (Fig. 6) | Vapor permeance (kg m−2 h−1 bar−1) (Fig. 6) | Liquid flux (L m2 h−1 bar−1) (Fig. 5) | Permeance ratio |
|---|---|---|---|---|
| PM-6 | 125 | 100 | 1.5 | 67 |
| PM-6a | 125 | 100 | 500 | 0.2 |
| PM-9 | 100 | 80 | 0.65 | 124 |
| PM-11 | 85 | 68 | 2.0 | 34 |
| PM-13 | 320 | 257 | 300 | 0.86 |
a
PM-6 data from Fig. 5b when membrane was impregnated with water miscible fluid and exchanged to water during water flow experiment.