Polyvinyl pyrrolidone (PVP, PVP) CAS 9003-39-8

Polyvinylpyrrolidone (PVP, CAS 9003-39-8) is a water—soluble polymer used as a binder, stabilizer, film-forming agent and thickener. It has good adhesion to the skin and mucous membranes. It is applicable in various fields: pharma, cosmetics, food production, contact lenses and biotechnological modules.

1. History and nomenclature
PVP was obtained as part of research on polymerization of N-vinylpyrrolidone. International designations are preserved in several variants: Kollidon®, Polyvidone, Povidone (in the pharmacopoeial name at a certain molecular weight).

2. Properties and chemical profile
The formula of the repeating link is: [C₆H₉NO]ₙ
Appearance: powder of various degrees of granulation (color from white to barely yellowish).
Solubility: highly soluble in water, methanol, ethanol; insoluble in certain nonpolar solvents.
Stability: not prone to hydrolysis or oxidation under normal conditions, but thermally decomposes under extreme heat.

3. Mechanisms of action and functions
Binder: forms a strong bond between powder granules, increasing the mechanical stability of pharmaceutical products.
Film formation: gives a smooth and semi-permeable film on the skin, which is in demand in cosmetics.
Solubilization: improves the solubility of poorly soluble active ingredients, acting as a solubilizing agent.

4. Main areas of application
Pharma: various degrees of polymerization (K-values) for tablets, sweet shells, hydrogels.
Cosmetics: hair sprays, styling gels, creams and lotions for moisturizing.
Food industry: beverage clarification, foam stabilization (beer, carbonated drinks).
Biotechnology: matrix media, membranes, enzyme carriers.

5. Potential exposure and toxicology
Safety: when administered orally in therapeutic doses, it is practically not absorbed into the gastrointestinal tract and is excreted from the body.
Allergic reactions: in extremely rare cases of sensitivity, skin irritation may occur.

6. Modern development trends
Modifications: introduction of functional groups that give PVP additional properties (e.g., electrostatic resistance).
Nanofibers: PVP-based spinning to produce biocompatible nanomaterials.
Composites: incorporated into polymer matrices to enhance adhesive and rheological properties.

7. Conclusion
The versatility and biocompatibility of polyvinylpyrrolidone make it a key polymer in pharmaceuticals, cosmetics, and related fields. Its unique properties continue to drive research and development in new materials, improving drug bioavailability, and creating high-tech coatings.