Effects of oxidized cellulose nanocrystals on the structure and mechanical properties of regenerated collagen fibers

The mechanical properties of regenerated collagen composite materials are use in diverse applications. However, there few efficient strategies to enhance the fibers. Herein, oxidized cellulose nanocrystals (oCNCs) were successfully prepared aqueous media via oxidation hydroxyl groups on surface (CNCs) using ammonium persulfate (APS) as an oxidant. Collagen fibers then by introducing oCNCs into matrix a dry-jet wet-spinning technique. morphology, structures, and carefully investigated. results indicate that CNCs can induce microfibril orientation during formation process protect possibility their interactions with molecules. offered better enhancement efficiency than CNCs, as-prepared collagen/oCNC exhibited extraordinary improvements both tensile strength toughness only 0.05 wt% loading. reason for this improvement is carboxyl form stronger hydrogen bonds electrostatic molecules, thus resulting synergistic strength, toughness, thermal stability This work provides facile method achieve high broad