Polyvinyl Pyrrolidone/USP Grade Pvp K30 K90 K12 K15 K17 K25 K60/Polyvinylpyrrolidone CAS No 9003-39-8

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Product description:

Pvp k30 polymer polymer is a kind of non-ionic polymer compound. It is a more extensively studied fine chemical product among N-vinylamide polymers. Among them, the K value is actually a characteristic related to the relative viscosity of the PVP aqueous solution. value. It has developed into three categories of non-ionic, cationic and anionic, three specifications of industrial grade, pharmaceutical grade, and food grade, and a series of homopolymers, copolymers and crosslinked polymers with relative molecular weights ranging from several thousand to over one million.

Performance and application

Solubility and solution characteristics

Like all homopolymer series products, because Pvp k30 polymer contains hydrophilic and lipophilic groups in its molecular structure, it can interact with many solvents, making it soluble in water, and soluble in a variety of alcohols and carboxylic acids. , Amines and halogenated hydrocarbons and other organic solvents. The solubility is only limited by its own viscosity.

Pvp k30 polymer, which can dissolve in a variety of organic solvents, makes it widely used in the production of water treatment membranes and is an excellent membrane porogen. Taking the hollow fiber membrane made of PVDF as an example, PVPK30, PVDF and other fillers are co-dissolved in organic solvents such as DMF or DMAc to make a casting solution. After spinning and other subsequent processes, it is gelled in the water phase or the alcohol phase to produce membrane filaments with uniform pore diameters.

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