Abstract
The silk fibroin (SF) nanofiber mats with good water resistance and mechanical property were directly prepared by adding crosslinker 1-Ethyl-3-(3-dimethylaminopropyl)-carbodiimide (EDC) into the electrospin solution. The effect of EDC on the morphology, structure and physical properties of SF nanofiber mats was analyzed. With the addition of EDC, the average fiber diameter increased from 262 to 635 nm. The results from FTIR, TG-DTA and X-ray diffraction showed that EDC induced the structural transition from random coil to β-sheet conformation. Furthermore, the solubility and mechanical properties of SF nanofiber mats were obviously improved when the crosslinker EDC was used.
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