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- W4200353977 abstract "The development of asymmetric membranes-i.e., matching two fibrous layers with selected composition and morphological properties to mimic both the epidermis and dermis-currently represents one of the most promising strategies to support skin regeneration during the wound healing process. Herein, a new asymmetric platform fabricated by a sequential electrospinning process was investigated. The top layer comprises cross-linked polyvinylalcohol (PVA) nanofibers (NFs)-from water solution-to replicate the epidermis's chemical stability and wettability features. Otherwise, the bottom layer is fabricated by integrating PVA with wool-keratin extracted via sulfitolysis. This protein is a biocompatibility polymer with excellent properties for dermis-like structures. Morphological characterization via SEM supported by image analysis showed that the asymmetric membrane exhibited average fiber size-max frequency diameter 450 nm, range 1.40 μm-and porosity suitable for the healing process. FTIR-spectrums confirmed the presence of keratin in the bottom layer and variations of keratin-secondary structures. Compared with pure PVA-NFs, keratin/PVA-NFs showed a significant improvement in cell adhesion in in vitro tests. In perspective, these asymmetric membranes could be promisingly used to confine active species (i.e., antioxidants, antimicrobials) to the bottom layer to support specific cell activities (i.e., proliferation, differentiation) in wound healing applications." @default.
- W4200353977 created "2021-12-31" @default.
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- W4200353977 date "2021-12-20" @default.
- W4200353977 modified "2023-09-27" @default.
- W4200353977 title "Design of Asymmetric Nanofibers-Membranes Based on Polyvinyl Alcohol and Wool-Keratin for Wound Healing Applications" @default.
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- W4200353977 doi "https://doi.org/10.3390/jfb12040076" @default.
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