Preparation of carboxymethylated pulp and preparation of carboxymethylated nanocellulose. According to detailed information on new technologies for powdered cellulose, as of May 15, 2023, new technologies include the preparation of carboxymethylated pulp, the preparation of carboxymethylated nanocellulose, and dry carboxymethylated CNF. redispersion and other technologies. Powdered cellulose is an organic floc fiber made from processed natural renewable fibers.