Natural cellulose is the most widely distributed and abundant polysaccharide in nature, with abundant sources. The current modification technology of cellulose mainly focuses on etherification and esterification. Carboxymethylation reaction is one kind of etherification technology. Cellulose is carboxymethylated to obtain carboxymethyl cellulose (CMC), whose aqueous solution has thickening, film-forming, adhesion, water retention, colloid protection, emulsification, and suspension. Widely used in petroleum, food, medicine, textile, and paper industries, CMC is one of the most important cellulose ethers.
Application of Carboxymethyl Cellulose in Putty Powder
Carboxymethyl cellulose (CMC) in the first generation of putty powder formulations mainly plays a role in thickening and water retention, which is divided into neutral carboxymethyl cellulose (PH value of 7 or so, viscosity 850 [79 viscometer]) and alkaline carboxymethyl cellulose (PH value of 9 to 12 or so, viscosity between 350 and 500). Neutral carboxymethyl cellulose has good water retention and high viscosity, but poor workability when not formulated properly. Alkaline carboxymethyl cellulose has good workability, but water retention is not as good as neutral. To reduce the cost, some manufacturers do not use refined cotton, but use some scraps, such as towel fluff, cloth, cotton boards, and wood pulp boards, which will greatly reduce the quality, viscosity, and water retention of carboxymethyl cellulose. So sharpen your elbows and choose the strong and reliable manufacturers as much as possible. Meanwhile, welcome to contact our engineers for 1 VS 1 in-depth discussion and exchange.
