Hydrophobic surfaces, enhancement copolymerization

The hydrophilic, hydrophobic, and ionic nature of PVP can be modified by copolymerization to enhance the properties of PVP for certain applications. Nonionic, anionic, and cationic VP copolymers have all been commercialized. A wide range of vinyl pyrrolidone and vinyl acetate copolymers, which are non-ionic, have been made with optimized amphiphilicity and solubility in water or alcohol for the cosmetic and pharmaceutical industries. The surface activity of PVP can be further enhanced by copolymerization with acrylic acid. Vinyl pyrrolidone and acrylic acid copolymers, which are anionic in their major applications, with different molar rations have been developed with well-balanced surface, associative, and film-forming properties for industrial applications. 

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