hydroxypropyl cellulose

Hydroxypropyl cellulose (HPC) is a semi-synthetic polymer derived from cellulose through hydroxypropyl ether substitution, producing a water-soluble thermoplastic with tunable properties. It is widely used in pharmaceutical formulations as a binder, thickener, and film-former in tablets and capsules, as well as in cosmetics, food additives, and coatings where its ability to form clear films and control viscosity are valued. Engineers select HPC over alternatives like PVP or PEG when they need a cellulose-based polymer with good film-forming characteristics, thermal processability, and regulatory acceptance in food and pharmaceutical applications.