Polyvinylpyrrolidone
In the early 1950s, the older hair styling agent based totally on shellac and oil used to be shortly changed through PVP spray, which is nonetheless broadly used. It can shape a re wetting, obvious movie on the hair, with a luster and suitable lubrication. PVP is properly well matched with a range of propellants and has antiseptic properties. It is broadly used in hair styling and combing merchandise as a movie forming agent, a softener and stabilizer for pores and skin care lotion and creams, a base fabric for eye and facial splendor cosmetics and lipstick, a dispersant in hair dye and a foam stabilizer for shampoo. PVP has detoxing consequences and reduces the inflammation of other formulations to the pores and skin and eyes. It is additionally used in toothpaste as a stain remover, gelling agent, and antidote. The primary disadvantage of polyvinyl pyrrolidone PVP is its sensitivity to moisture, however its vinyl acetate copolymer can be used to minimize the have an effect on of moisture and humidity. In addition, PVP has large functions in industries such as pharmaceuticals, beverages, and textiles.
Polyvinylpyrrolidone, additionally acknowledged as PVP, is a polymer of ethylene pyrrolidone. Due to its unique ranges of polymerization, it can be divided into soluble PVP and insoluble PVPP (polyvinylpyrrolidone). The relative molecular weight of soluble PVP is 8000~10000, which can be used as a precipitant to precipitate by way of reacting with polyphenols. By the usage of this method, there are effortlessly residual PVP in the wine. Due to the accumulation impact of PVP in the human body, the World Health Organization does now not propose the use of this substance. In latest years, the use of soluble PVP has grow to be rare. The insoluble PVPP sequence started out to be used in the beer enterprise in the early 1960s, with a relative mass increased than 700000. It is a polymer insoluble substance shaped via in addition cross-linking and polymerization of PVP, and can be used as an adsorbent for polyphenols, with proper results.
Melting point | 300 ° C |
Boiling point | 90-93 ° C |
Density | 1,69g/cm3 |
Storage conditions | 2-8 ° C |
Solubility | H2O: soluble100mg/mL |
Form | Powder |
Color | Whitetoyellow white |
PH value | 3.0-5.0 |
Water solubility | Soluble in water. |