Fig. 1From: Towards sustainable production and utilization of plant-biomass-based nanomaterials: a review and analysis of recent developmentsSchematics of cellulose ultrastructure: a radial aggregation in cell walls (through hydrogen bonding) of cellulose elementary fibrils into nanofibrils and fibril matrices [14] based on Fengel [11] (with permission from TAPPI ©); b longitudinal cellulose aggregation with crystalline and disordered regions based on Rowland and Roberts [17], I:coalesced surface with high order, II: readily accessible slightly disordered surfaces, III: readily accessible surfaces of strain-disorder tilt and twist regionsBack to article page