Table 2.
Diameter, morphology, wettability and water vapor sorption of zein fibers.
| Sample | Diameter (µm ± SD) | Morphology | Contact Angle (° ± SD) | Vapor Sorption (%) |
|---|---|---|---|---|
| (Z)PEO | 1.5 ± 0.3 | Tubular fibers | 64.0 ± 15.4 | 26.5 |
| (Z)E | N/A | Beads | N/A | N/A |
| (Z+T)PEO | 1.6 ± 0.5 | Tubular fibers | 68.9 ± 16.7 | 23.1 |
| (Z+PEO)PEO | 1.2 ± 0.1 | Tubular fibers | 47.1 ± 4.7 | 24.3 |
| (Z+PEO)E | 1.6 ± 0.5 | Ribbon fibers | 110.6 ± 9.1 *** | 8.2 |
| (Z+PEO+T)PEO | 1.6 ± 0.2 | Tubular fibers | 59.7 ± 17.6 | 21.5 |
| (Z+SA)PEO | 1.4 ± 0.2 | Mixed fibers | 72.1 ± 7.4 | 22.4 |
| (Z+SA)E | N/A | Beads | N/A | N/A |
| (Z+SA+T)PEO | 1.4 ± 0.3 | Mixed fibers | 100.6 ± 8.4 *** | 24.3 |
Key: E, absolute ethanol; PEO, polyethylene oxide; SA, stearic acid; T, tetracycline hydrochloride; Z, zein; N/A, not available; SD, standard deviation; ***, statistical difference at p < 0.001.