Sono-chemical preparation of cellulose nanocrystals from lignocellulose derived materials

This study examined the production of cellulose nanocrystals from microcrystalline wood cellulose, Avicel and recycled pulp of wood pulp using sono-chemical-assisted hydrolysis. Two hydrolysis systems: deionized water and maleic acid were evaluated. In deionized water, Avicel produced cellulose nanocrystals with average diameter of 21±5nm (minimum 15nm and maximum 32nm). Cellulose nanocrystals from recycled pulp were not distinctively spherical and had an average diameter of 23±4nm (minimum 14nm and maximum 32nm). Maleic acid (50mM) sono-chemical assisted hydrolysis of Avicel at 15°C and 90% power output for 9min produced cellulose nanocrystals which were cylindrical in shape and were of dimensions, length 65±19nm and width 15nm. [Copyright &y& Elsevier]