Abstract
The demand for silk peptide-based nanomaterials have been increasing owing to their excellent mechanical properties. However, analyzing the nanostructure and mechanical properties of new silk peptide-based materials remains a challenge. In this study, we examined silkworm silk peptide, a biocompatible and eco-friendly material, as a next-generation nanomaterial. The secondary structure of the silk peptide-based nanomaterial was analyzed. The results demonstrated that the content of the beta-sheet and hydrogen bonding significantly affected the mechanical properties, and the (GAGAGS) motif and (GAGAGY) motif forming the beta-sheet were the role of the motif. Additionally, elastic network modeling (ENM) was performed to approximate the mechanical properties of the silk peptide-based nanomaterial. Our results showed the output of 13.795 GPa on average for each mode shape. Furthermore, vdW and hydrophobic interactions were shown to be the reason for these excellent mechanical properties. Moreover, we gained important insight on the design of next-generation silk peptide-based nanomaterials. Our study serves as a good reference point for elucidating the structural stability and mechanical properties of silk peptide-based nanomaterials and applying them as next-generation nanomaterials in various research fields.
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