The main characteristics of hydroxyethylmethyl cellulose (HEMC) are:
Solubility: soluble in water and some organic solvents, HEMC can dissolved in cold water. Its highest concentration is only determined by the viscosity, the solubility changes with the viscosity, the lower the viscosity, the greater the solubility.
Salt resistance: HEMC products are non-ionic cellulose ether, and they are not polymeric electrolytes. So in the presence of metal salts or organic electrolytes, they are relatively stable in aqueous solution. But the excessive addition of electrolyte, can cause gel and precipitation.
Surface activity: Because the aqueous solution has the surface activity function. It can used as a colloidal protective agent, emulsifier and dispersant.
Thermal gel: When HEMC product aqueous solution to a certain temperature, it becomes opaque, gel, forming precipitation. But in continuous cooling, it returns to the original solution state, and the temperature of this gel and precipitation mainly depends on their lubricant, help suspension agent, protective colloid, emulsifier, etc.
Metabolic inertia and low smell and fragrance: Because HEMC and low smell and fragrance. So food and drugs.
Mbiotic resistance: HEMC has good mildew resistance and good viscosity stability in long-term storage.
PH stability: the viscosity of the aqueous solution of HEMC products by acid or alkali, and the PH value is relatively stable in the range of 3.0-11.0.
Hydroxyethyl methylcellulose can serve as a hydroidal protective agent, emulsifier and dispersant because of its aqueous solution.Application examples are as follows:
Hydroxyethyl methyl cellulose influence on cement properties. Hydroxyethylmethylcellulose is a nonodorless, tasteless, and non-toxic white powder that dissolves in cold water to form a transparent, viscous solution.
It has the characteristics of thickening, adhesion, dispersion, emulsification, film formation, suspension, adsorption, cemelling, surface activity, maintaining water, and protecting colloid, etc. Because the aqueous solution has a surface-active function. It can act as a colloidal protective agent, emulsifier and dispersant.Hydroxyethylmethyl cellulose solution is a high efficiency water retaining agent.