Nanocomposites Based on Polyurethane and Crystaline Nanocellulose

Several advantages of cellulosic materials such as renewable nature, low energy consumption, high specific strength and modulus and relatively reactive surface afforded that thesematerials were known as proper fillers to important polymers, for example, polyurethanes (PUs) [1]. The use of nano-sizedparticles of cellulose is expected to become more widespread because of the advantages of nanoparticles compared to micron-sized ones. Conventional PUs are insoluble in water,so insertion of different groups (either ionic or non-ionic) into polymer chain is applied to disperse such polymers in water[2]. Both nanocellulose and aqueous polyurethane dispersions (PUDs) are interesting materials because of their excellentmechanical, physical and eco-friendly properties. This articlereports the preparation of cellulose nanocrystal (CN) and following nanocomposites based on prepared nanoparticles and aqueous polyurethane dispersions