PVP K 30 Powder9003-39-8

Povidone K30

The molecular weight of K30 is about 40,000, which is the most widely used product in the homopolymer series.

Product name : PVP-K30 Povidone K30 PVP K-30 powder

Chemical Name:1-vinyl-2-pyrrolidone homopolymer

CTFA name: POLYVINYLPYRROLIDONE(Abbreviation PVP)

CSC No.:9003-39-8

Molecular formula :(C₆H₉NO)_n

Solubility and solution characteristics

Like all homopolymer series products, because PVPK-30 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.

PVPK30, 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.

Surface activity

The molecule of PVPK30 has a butyrolactam structure, which contains a large polar lactam group with a dipole moment of 40, which has the ability to be a hydrophilic and polar-philic group. In addition, there are non-polar methylene (-CH2-) and methine (-CH=) groups on the molecular ring and in the long chain to make it lipophilic. The environment at both ends of the dipole amide group in the molecule is not the same. From the molecular model, the oxygen atom is exposed, while the end containing the N atom is just surrounded by the methyl group and the methylene group. in. The molecular structure of PVPK30 gives it surface activity and can be used as a polymer surfactant.

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