Bioinspired, Robust, and Absorbable Cellulose Nanofibrils/Chitosan Filament with Remarkable Cytocompatibility and Wound Healing Properties

A bioinspired Cellulose nanofibrils (CNF)/chitosan (CS) composite thread containing 5% cationic polyacrylamide by the mass of CS was prepared, and the obtained CNF/CS-5C thread exhibited excellent mechanical properties and low swelling ratio in water due to the high cross-link degree.