Fig. 2

Nanofiber structure and surface morphology of the electrospun mats. a Macrograph of the electrospun mat. SEM micrographs of (b) CS, c PA6, d CS-5CLO8Q, e PA6-PHMB and f core/shell PA6-PHMB/CS-5CLO8Q. (g–i) TEM micrographs of the core/shell PA6-PHMB/ CS-5CLO8Q nanofibrous mats. (Core to shell feed rate: 2.5 and 5.0 µL min⁻¹)