HEMC (Hydroxyethyl Methyl Cellulose)
Publish Time: 2025-04-23 Origin: Site
HEMC (Hydroxyethyl Methyl Cellulose)
HEMC is a non-ionic, water-soluble polymer derived from cellulose. It is synthesized through the chemical modification of natural cellulose, involving etherification with methyl chloride and ethylene oxide.
Key Properties:
Water Retention: Excellent moisture retention, making it ideal for cement-based mortars and gypsum products.
Thickening: Forms viscous solutions, enhancing workability in coatings, adhesives, and construction materials.
Film Formation: Creates flexible, transparent films used in coatings and cosmetics.
Thermal Gelation: Some grades gel when heated, useful in pharmaceutical applications.
pH Stability: Stable in both acidic and alkaline environments (pH 3–11).
Applications:
Construction: Tile adhesives, renders, self-leveling compounds, and cement mortars.
Coatings & Paints: Improves viscosity and sag resistance.
Pharmaceuticals: Binder in tablets, controlled-release agent.
Personal Care: Thickener in shampoos, lotions, and cosmetics.
Food Industry: Stabilizer and emulsifier (food-grade HEMC).
Advantages:
Enhances workability and adhesion.
Reduces cracking in construction materials.
Eco-friendly and biodegradable (derived from cellulose).