Hydroxypropyl Methylcellulose (HPMC) is a cellulose derivative widely used in food, medicine, construction and cosmetics. Its specific model E15 has attracted much attention due to its unique properties and wide application.
1. Physical and chemical properties
Chemical composition
HPMC E15 is a partially methylated and hydroxypropylated cellulose ether, whose molecular structure consists of hydroxyl groups in the cellulose molecule replaced by methoxy and hydroxypropyl groups. The “E” in the E15 model represents its main use as a thickener and stabilizer, while “15″ indicates its viscosity specification.
Appearance
HPMC E15 is usually a white or off-white powder with odorless, tasteless and non-toxic properties. Its particles are fine and easily dissolved in cold and hot water to form a transparent or slightly turbid solution.
Solubility
HPMC E15 has good water solubility and can be quickly dissolved in cold water to form a solution with a certain viscosity. This solution remains stable at different temperatures and concentrations and is not easily affected by the external environment.
Viscosity
E15 has a wide range of viscosity. Depending on its specific use, the desired viscosity can be obtained by adjusting the concentration and solution temperature. Generally speaking, E15 has a viscosity of about 15,000cps in a 2% solution, which makes it perform well in applications that require high viscosity.
2. Functional properties
Thickening effect
HPMC E15 is a highly efficient thickener and is widely used in various water-based systems. It can significantly increase the viscosity of the liquid, provide excellent thixotropy and suspension, and thus improve the texture and stability of the product.
Stabilizing effect
E15 has good stability, which can prevent the sedimentation and agglomeration of particles in the dispersed system and maintain the uniformity of the system. In the emulsified system, it can stabilize the oil-water interface and prevent phase separation.
Film-forming property
HPMC E15 has excellent film-forming properties and can form tough, transparent films on the surfaces of various substrates. This film has good flexibility and adhesion and is widely used in pharmaceutical coatings, food coatings, and architectural coatings.
Moisturizing property
E15 has strong moisturizing ability and can be used as a moisturizer in cosmetics and skin care products to keep the skin moist and smooth. In the food industry, it can also be used as a moisturizing preservative to extend the shelf life of food.
3. Application fields
Food industry
In the food industry, HPMC E15 is often used as a thickener, stabilizer and emulsifier. It can be used to produce ice cream, jelly, sauces and pasta products, etc., to improve the taste and texture of food and extend its shelf life.
Pharmaceutical industry
HPMC E15 is widely used in pharmaceutical preparations in the pharmaceutical industry, especially as the main excipient for controlled-release and sustained-release tablets. It can control the release rate of drugs and improve the stability and durability of drug efficacy. In addition, E15 is also used in ophthalmic preparations, topical ointments and emulsions, etc., with good biocompatibility and safety.
4. Safety and environmental protection
HPMC E15 is a non-toxic and non-irritating cellulose derivative with good biocompatibility and safety. It is widely used in the fields of food and medicine and meets relevant safety standards and regulatory requirements. In addition, E15 has good biodegradability and will not pollute the environment, which meets the needs of modern society for green and environmentally friendly materials.
Hydroxypropyl methylcellulose E15 has become an important additive in various industries due to its unique physical and chemical properties and wide range of functional applications. It has excellent thickening, stabilizing, film-forming and moisturizing properties and is widely used in food, medicine, construction and cosmetics. At the same time, E15 has good safety and environmental protection, and is an indispensable green material in modern industry.
Post time: Jul-27-2024