Table 1.
Contact angle values of polyvinyl chloride (PVC) membranes incorporated with different weight percentages of polyvinylpyrrolidone (PVP) at three spinneret distances.
| PVC/PVP Fibers | Water Contact Angle (°) | ||
|---|---|---|---|
| D = 20 cm | D = 25 cm | D = 30 cm | |
| Only PVC Fibers | 136.02 | 135.76 | 135.70 |
| Only PVP Fibers (water soluble) | 0.00 | 0.00 | 0.00 |
| PVC + 2 wt % PVP Fibers | 127.14 | 125.26 | 124.23 |
| PVC + 3 wt % PVP Fibers | 118.35 | 116.08 | 105.85 |
| PVC + 4 wt % PVP Fibers | 103.03 | 70.95 | 58.51 |
| PVC + 5 wt % PVP Fibers | 21.30 | 20.30 | 16.12 |