Table 4 Cyclic stress–strain curves data for TPU and TPU/CNT membranes.
Sample | Cycle | Strain end point (%) | Permanent set (%) | Elastic recovery (%) | ER/SEP ratio (%) |
|---|---|---|---|---|---|
Unidirectional pure TPU | 1 | \(105\pm 8\) | 16 \(\pm 2\) | 89 \(\pm 9\) | 79\(\pm 2\) |
20 | 129 \(\pm 11\) | 29 \(\pm 5\) | 100 \(\pm 10\) | 78\(\pm 3\) | |
Unidirectional TPU/CNT | 1 | 56 \(\pm 4\) | \(4 \pm 2\) | 52 \(\pm 2\) | 93 \(\pm 2\) |
20 | \(66 \pm 6\) | \(7 \pm 4\) | 59 \(\pm 2\) | 89\(\pm 24\) | |
Random pure TPU | 1 | 169 \(\pm 5\) | 19 \(\pm 2\) | 151 \(\pm 3\) | 89 \(\pm 2\) |
20 | \(208\pm 3\) | 41 \(\pm 4\) | 167 \(\pm 2\) | 80\(\pm 2\) | |
Random TPU/CNT | 1 | 80 \(\pm 3\) | 9 \(\pm 1\) | 71 \(\pm 1\) | 89 \(\pm 2\) |
20 | 96 \(\pm 2\) | 18 \(\pm 3\) | 78 \(\pm 1\) | 81\(\pm 3\) |
