Application of sodium carboxymethyl cellulose and hydroxyethyl cellulose for daily chemicals

Sodium carboxymethyl cellulose(CMC)and hydroxyethyl cellulose(HEC)are two widest applied cellulose ethers.Both of them are prepared by hydroxyl group of each anhydroglucose monomer unit of the cellulose chain reacting with etherifying group such as monochloroacetic acid or ethylene oxide.CMC's and HEC's aqueous solutions are non-Newton liquid,because they change in viscosity with shear rate and withˉout time,and the viscosity of solutions increases rapidly with concentration.They are excellent thickeners and rheological aids in the various fields.This paper briefly introduces CMC's and HEC's molecule structure,preparation method,solution property and application for daily chemˉicals,etc.