Hybrid films from cellulose nanomaterials—properties and defined optical patterns

Abstract Polymer composites with nanocellulose as the reinforcing agent often lack good compatibility between two components. In this study, we have combined cellulose nanofibrils (CNFs) and nanocrystals (CNCs) in different ratios to create all-cellulose films consisting of entirely discrete objects that complement each other. Then further, by applying controlled dissolution concept were able defined optical patterns on films. The 50% CNCs showed equivalent mechanical barrier properties when compared pure CNF film. addition, incorporation enabled tuning films’ properties. To modify film prepared specific impregnating N -methylmorpholine- -oxide (NMMO) followed heat treatment pressure. Mechanical testing measurements patterned effect dissolved regions increased tensile strength films, however, strain was decreased quite significantly. Altogether, CNF/CNC hybrid combine both nanomaterials’ Cellulose film-forming ability can further tune optical, mechanical, properties, optimize for varying applications such sensors packaging materials. Graphical abstract