Concentration of PUL, wt% | PEC/PUL ratio | Total polymer in water, wt% | FDS (nm) | Morphology |
9.0 | 0.13 | 10.2 | 140 ± 19 | Fiber |
7.5 | 0.20 | 9.0 | 135 ± 25 | Fiber |
6.0 | 0.30 | 7.8 | 88 ± 17 | Fiber |
5.0 | 0.40 | 7.0 | 86 ± 29 | Beaded fiber |
4.5 | 0.47 | 6.7 | 60 ± 18 | Beaded fiber |
3.0 | 0.80 | 5.4 | 38 ± 12 | Beaded fiber |