PVP K17, with its chemical name polyvinylpyrrolidone (abbreviated as PVP), is a kind of polymer. PVP is divided into different K value models based on the average molecular weight. It is produced by polymerization reaction of N-vinylpyrrolidone (NVP) monomer. The molecular chain contains polar pyrrolidone groups and has hydrophilic and colloidal properties.

Polyvinylpyrrolidone K17 is white to off-white powder, readily soluble in polar solvents such as water, ethanol, and acetone, forming clear solutions. Polyvinylpyrrolidone K17 is stable at room temperature, resistant to acid, alkali and salt solutions.

Characteristics

PVP K17 has excellent water solubility and can form transparent and tough films in solutions, often used as a film-forming agent in cosmetics, medicine and other fields. As a high-molecular surfactant, it can adsorb on the surface of particles, prevent particle aggregation, and enhance the stability of the dispersion system. The carbonyl group in the molecule can form complexes with phenols, carboxylic acids, alkaloids, etc., enhancing the solubility of poorly soluble drugs. Low K value models (such as K17) have relatively low hygroscopicity and can adjust the moisture retention capacity of the formula. They are suitable for scenarios where hygroscopicity needs to be controlled (such as solid dispersions). Non-toxic and non-irritating, it is widely used in the pharmaceutical and food industries (such as tablet adhesives and eye drop dispersants). It is resistant to acids and alkalis, not easily hydrolyzed, and can be used within a wide pH range, but strong oxidants may cause it to degrade.

PVP K17  application

Pharmaceutical industry

Tablets and capsules: As an adhesive, it enhances the compressibility of granules and improves the formability of tablets. At the same time, as a coating material, it enhances the stability of tablets.

Liquid preparations: Used as thickeners, dispersants and stabilizers in oral liquids and eye drops to prevent drug precipitation.

Poorly soluble drug carriers: By using solid dispersion technology to form co-precipitates with drugs, the dissolution rate of drugs is enhanced.

Contact lens care solution: As a lubricant and moisturizer, it reduces the friction of the lenses on the eyes and keeps them moist.

Cosmetics and personal care

Hair products: As a film-forming agent in hair gel and mousse, it gives hair a setting effect while maintaining flexibility and luster. PVP K17 is used as a thickener and conditioner in shampoos and conditioners.

Skin care products: Used as a dispersant and stabilizer in lotions and creams to improve the texture of the products; PVP K17 is used as a film-forming agent in facial masks and gels to promote the absorption of active ingredients.

Makeup: Used as an adhesive in eye shadow and powder compacts to enhance the formability and adhesion of the powder.

Food industry

Food additive: As a clarifying agent for beer and beverages, it adsorbs polyphenolic substances to prevent turbidity. It is used as a quality improvers in meat products and pastries to enhance water retention and elasticity.

Natural pigment protection: Forms complexes with anthocyanins, carotenoids, etc., enhancing the stability of pigments and extending the shelf life of food.

Other fields

Textile printing and dyeing: As a sizing additive, it improves the dispersion of dyes and the uniformity of dyeing. PVP K17 is used as an antistatic agent and softener in textile auxiliaries.

Coatings and inks: Used as a thickener and dispersant in water-based coatings to improve film-forming performance; PVP K17 is used as an adhesive in ink to improve printability.

Lithium battery industry: As a binder for electrode slurry, it enhances the adhesion between active substances and current collectors, and improves battery performance.

PVP K17, with its unique physicochemical properties, plays a key role in multiple industries. Especially in the fields of medicine and cosmetics, its applications are the most extensive. In the future, with the development of materials science, its functional applications may be further expanded.