Nano-fibrous Nanofibers 2 Air filtration 1 Air permeability 1 Alkali treatment 1 Biocompatibility 1 Box-Behnken design 1 Cell culture 1 Composite scaffolds 1 Efficiency 1 Experimental plans 1 Extracellular matrices 1 Filtration efficiency 1 Hydrogel scaffolds 1 Hydrogels 1 Micro pattern 1 Micropattern nanofiber 1 Micropattern nanofibre 1 Morphology 1 Nanofiber/hydrogel scaffold 1 Nanofibre/hydrogel scaffold 1 Nanofibrous composite 1 Overall filtration efficiency 1 Polyamide 6 1 Polypropylenes 1 Scaffolds (biology) 1 Scanning electron microscopy 1 Sodium hydroxide 1 Surface morphology 1 Surface-modified 1