Many customers ask about sodium carboxymethyl cellulose and polyanionic cellulose, and they will be very confused about the different degrees of substitution. What is the specific impact on the application?
In essence, the higher the degree of substitution, the more the anions (-OCH2COONa) on the carboxymethyl cellulose sodium CMC and the polyanionic cellulose PAC molecule, the less unsubstituted units in the molecule, the more stable the performance, and the higher the substitution. CMC and PAC are more stable in application.
Let me analyze the impact of different degrees of substitution:
1. The higher the degree of substitution, the better the fluidity of the product appearance;
2. The higher the degree of substitution, the higher the transparency of the product after dissolution;
3. The higher the degree of substitution, the better the acid resistance, heat resistance, salt resistance and thixotropy of the product;
4. The higher the degree of substitution, the higher the stability of the product, which is manifested as: small sedimentation, high viscosity stability, and high fluid loss resistance.
