hydroksimetyyliselluloosa

Hydroksimetyyliselluloosa, often abbreviated as HMC, is a derivative of cellulose. It is produced by chemically modifying cellulose, a naturally occurring polymer found in plant cell walls, through a process that introduces methoxy groups. This modification alters the solubility and thickening properties of the original cellulose.

HMC is a white, fibrous powder that is insoluble in water but can be dispersed in various organic solvents. Its primary applications stem from its ability to act as a thickener, stabilizer, and binder. In the construction industry, it is commonly used in cement-based products such as tile adhesives, mortars, and plasters to improve workability, water retention, and adhesion. It helps prevent premature drying and sagging of these materials.

Beyond construction, HMC finds use in other sectors. It can serve as a binder in pharmaceutical tablets, aiding in their formation and dissolution. In the textile industry, it may be employed as a sizing agent to strengthen yarns. Its role as a rheology modifier is also leveraged in some paints and coatings. The specific properties of HMC can be tailored by adjusting the degree of substitution and molecular weight, allowing for a range of performance characteristics to meet diverse industrial needs. It is generally considered a safe and non-toxic substance for its intended uses.