Sodium carboxymethyl cellulose (also known as sodium carboxymethyl cellulose, carboxymethyl cellulose, CMC, Carboxymethyl, Cellulose Sodium, Sodium salt of Caboxy Methyl Cellulose) is the most widely used and largest in the world. The type of cellulose. Referred to as CMC-Na, it is a cellulose derivative with a glucose polymerization degree of 100-2000, and its relative molecular mass is 242.16. White fibrous or granulated powder. Odorless, tasteless, tasteless, hygroscopic, insoluble in organic solvents.
In order to solve the shortage of raw materials (refined cotton made from cotton linters), in recent years, some scientific research units in China have cooperated with enterprises to make comprehensive use of straw, foot cotton (waste cotton), bean curd and other trial production and production of CMC. The production cost has been greatly reduced, which has opened up a new source of raw materials for CMC industrial production and realized the comprehensive utilization of resources. On the one hand, it reduces production costs, on the other hand, CMC is moving towards higher precision. At present, CMC's research and development mainly focuses on the transformation of existing production technologies and innovations in manufacturing processes, as well as new CMC products with unique properties, such as the “solvent-slurry method” developed and applied in foreign countries. The new modified CMC with high stability can be used in a wider industrial production field and complex use environment to meet higher process requirements due to the higher degree of substitution and more uniform distribution of substituents. Internationally, this new modified CMC is also called "Poly anionic cellulose" (PAC).
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