Many people can't tell the difference between hydroxyethyl
cellulose and ethyl cellulose. Hydroxyethyl cellulose and ethyl cellulose are two different substances. They have the following characteristics respectively.
1
Hydroxyethyl
cellulose:
As a non-ionic surfactant, in addition to thickening, suspending, binding, floating, film-forming, dispersing, water retention and providing protective colloid, it also has the following properties:
1. HEC is soluble in hot water or cold water, and does not precipitate at high temperature or boiling, so that it has a wide range of solubility and viscosity characteristics, and non-thermal gelation;
2. It is non-ionic and can coexist with a wide range of other water-soluble polymers, surfactants, and salts. It is an excellent colloidal thickener for high-concentration electrolyte solutions;
3. The water retention capacity is twice as high as that of methyl cellulose, and it has better flow regulation.
4. Compared with the recognized methyl cellulose and hydroxypropyl methyl cellulose, the dispersing ability of HEC is poorer, but the protective colloid ability is stronger.
2
Ethyl cellulose is a non-ionic cellulose ether that is insoluble in water but soluble in organic solvents. It has the following characteristics:
1. Not easy to burn.
2. Good thermal stability and excellent thermoplasticity.
3. Does not change color to sunlight.
4. Good flexibility.
5. Good dielectric properties.
6. Excellent alkali resistance and weak acid resistance.
7. Good anti-aging performance.
8. Good salt resistance, cold resistance and moisture absorption resistance.
9. It is stable to chemicals and will not deteriorate in long-term storage.
10. It can be compatible with many resins and has good compatibility with all plasticizers.
11. It is easy to change color under strong alkaline environment and heating conditions.
