Table 2 Interior structure of PS fibers with different surface morphologies
Concentration (%) | THF/DMF ratio | Interior structure | Cross section | Morphology |
|---|---|---|---|---|
20 | 4:1 | Solid | Heart-like | Single grooved |
20 | 1:1 | Porous | Sawtooth | Grooved |
20 | 0:6 | Porous | Circular | Smooth |
10 | 1:1 | Porous | Sawtooth | Grooved |
30 | 1:1 | Porous | Heart-like | Single grooved |