silicone ironing board cover_square tablecloth 8 seater
2. Degree of Substitution (DS) The DS refers to the average number of hydroxyl groups replaced by hydroxyethyl groups. A higher DS typically enhances water solubility because the ether groups disrupt the hydrogen-bonding network of the cellulose, making it easier for the polymer chains to interact with water molecules.
hydroxyethyl cellulose solubility

One of the most significant fields using HPMC is the pharmaceutical industry. HPMC serves as a crucial excipient in drug formulations, acting as a binder, filler, and controlled-release agent in tablets and capsules. Its biocompatibility and low toxicity make it highly suitable for direct ingestion. For instance, high-viscosity HPMC is often utilized in extended-release formulations, controlling the rate at which the active pharmaceutical ingredient is released in the body, thus improving therapeutic efficacy.
hpmc grades pdf
