Natural Silk Film for Magnesium Protection: Hydrophobic/Hydrophilic Interaction and Self‐Healing Effect

Abstract

Biodegradable implants are required in order to provide successful treatment of injuries. Temporary magnesium‐based implants with particular properties are needed in cases when it is desirable not only to maintain vital activity, but also to initiate the self‐healing process of damaged bones or tissues as well. Unfortunately, the use of magnesium alloys is limited due to the fast biodegradability of the applied material. The aim of this research is to improve the corrosion resistance of magnesium alloys by sonochemical treatment in silk solution followed by additional layer‐by‐layer deposition of natural silk on the magnesium surface. The sonication process is carried out at a frequency of 20 kHz during 5–10 min, while the duration of the silk layer deposition is 15 min. The corrosion behavior of magnesium substrates modified by natural silk layer‐by‐layer assembly is studied. Magnesium substrates sonochemically treated in silk solution demonstrate three times better corrosion resistance compared to control samples sonochemically treated in water. Additional deposition of a silk layer enhances obtained corrosion resistance by 18 times, resulting in a 54‐fold increase overall.

Natural and Eco-Friendly Materials for Triboelectric Energy Harvesting

“…Another highly promising material which is biocompatible, provides high mechanical strength and has a unique structure is spider silk [94][95][96]. Zhang et al [97] have demonstrated the potential of a TENG based on recombinant spider silk.…”

Fluorescent Hybrid Material Based on Natural Spider Silk and Carbon Dots for Bioapplication

“…The FTIR spectra show the same characteristic polypeptide absorbance bands for The band observed at about 3300 cm −1 is due to stretching vibrations of the N−H bond, −OH groups of the proteins, and adsorbed water. 67,68 As mentioned earlier, the strong fluorescence ability of C-dot/ spider silk hybrids appears to be related to the presence of the −SCN group in its structure. To prove this, the spectra of the hybrid fibers (Figure 3A, orange) and pure powdered C-dots (Figure 3A, black) synthesized by the method described by Miao et al 64 were compared.…”

Recent Progress in Self‐healing Materials for Sensor Arrays

“…This is typically accomplished by physical interaction or chemical interaction, as sketched in Figure 1. Most intrinsic recovery designs rely upon either reversible covalent bonds, such as Diels‐Alder reactions, [2–12] disulfide bonds, [13–17] boronate ester bonds, [18–21] and imine bonds, [22–24] or non‐covalent, including hydrogen bonds, [25–32] ionic, [33–37] and hydrophobic interactions, [38–40] host‐guest interactions, [41–45] π‐π stacking, [46–48] and metal coordination [49–54] or supramolecular chemistry.…”