Innovative Technology of Producing High Purity Carboxymethyl Cellulose Based on Cellulose of Pavlonia Tree

Abstract

Purified Na CMC (Carboxymethyl cellulose) is a product in powder form or fiber form, and its color varies from white yellow to clear brown depending on the brand of the product. Purified Na CMC are well soluble in aqueous solution of 40% ethanol and acetone. Insoluble in other types of organic solvents. All quality parameters of refined Na CMC must meet the requirements of State standard 6,05-386-80. At the initial stage of scientific work, Na CMC were obtained on the basis of cellulose of wheat straw and cellulose of cotton. The scientific essence is that the cellulose is first soaked in isopropyl alcohol and the etching process is carried out in a caustic alkali (NaON) solution. Then, a certain amount of monochloroacetic acid is added to the alkaline cellulose, and the alkylation process is carried out. then the alkylation process is carried out by adding a certain amount of monochloroacetic acid to the alkaline cellulose. The resulting carboxymethyl cellulose is directed to purification Na CMC with a moisture content of 38.40% is calculated into 53% ethyl alcohol, and the extraction process is carried out.