PVP K15 categories: Industrial, Cosmetic and Pharmaceutical
Chemical name: polyvinylpyrrolidone
CAS accession number: 9003-39-8
Product specifications:
Appearance:white powder
Chemical formula： (C6H9NO)n
Molecular weight ：111.143
Density g/cm3 ：1.69
Melting point ℃ ：130
Boiling point ℃ ：90-93
Content % ：98
K ：15.2
PH ：5.8
◆Nature:is hygroscopic, easily soluble in water, ethanol, ether and other organic solvents, and has strong complex adsorption capacity for many substances.
◆Application:It is used as an adhesive to improve strength and thickness; improve strength in paper production; used as a resin coating; improved dye coloring in synthetic fibers; also commonly used in ink, imaging, lithography, washing and soap, textiles, pottery, Electricity, metallurgy, and as a polymerization additive, due to its excellent adhesion, film formation, dispersion and thickening characteristics, it is also widely used in the pharmaceutical industry
◆Storage method:dry seal, room temperature
Polyethylpyrrolidone (polyvidone, povidone, or PVP) is a synthetic water-soluble polymer composed of linear 1-vinyl-2-pyrrolidone groups. It is hygroscopic and easily absorbs up to 40% of its weight in water. It has excellent wettability in solution, easy to form film, suitable for use as coating additive. PVP can be synthesized by free radical polymerization of its monomer form N-vinylpyrrotanone using AIBN as initiator. In the chemical industry, PVP is widely used as a surface stabilizer, growth regulator, nanoparticle dispersant and reducing agent.
Application
PVP (average molecular weight) can be used as a stabilizer for the synthesis of metal nanoparticles to prevent their agglomeration. [4]PVP is also used to prepare mesoporous silicon polymer complexes (PVP-aminopropyl-SBA-15 Schiff base complexes) to effectively remove bivalent heavy metal cations from wastewater. PVP functionalized grafting has a strong affinity for heavy metal ions because it provides two adsorption sites, one through metal-C-O group interaction and the other through metal-π interaction (chelation with Schiff base).
The production process of PVP
The production process of PVP can be divided into acetylene method and gamma-butyrolactone method, and acetylene method is the mainstream production process of PVP.
