Explanation

carboxymethyl cellulose is the most representative ionic cellulose ether, and its sodium salt is usually used.. Pure CMC is a white or milky white fibrous powder or particle, odorless and odorless. It is insoluble in acids and organic solvents such as methanol, ethanol, ether, acetone, chloroform, and benzene, but soluble in water. Strong hygroscopicity. It has compatibility with other water-soluble adhesives, softening agent and resin. The manufacturing methods can be divided into water medium method and solvent method. The main chemical reactions in the manufacturing process are: ① cellulose reacts with alkaline aqueous solution to produce alkali cellulose; ② Etherification reaction of alkali cellulose with sodium monochloroacetate. It is widely used and adaptable, and is an indispensable raw material and auxiliary materials for many industrial sectors. carboxymethyl cellulose can form colloid and solution with high viscosity. It has the characteristics of adhesion, thickening, emulsification and dispersion, shaping, water retention, protective colloid, film forming, acid resistance, salt resistance, suspension, and is physiologically harmless. Therefore, it is widely used in food, medicine, chemicals, petroleum, paper making, textile, construction and other fields.

Classification