Inorganic filler and dopamine compound inorganic and organic hybrid membrane as well as preparation method and application of membrane

Abstract

The invention discloses an inorganic filler and dopamine compound inorganic and organic hybrid membrane as well as a preparation method and application of the membrane. With linear or tubular nano particle as a carrier, L-dopamine is grafted on the surface of the carrier to obtain compound inorganic particle and membrane material polymer mixture and a flat sheet membrane is prepared through submersion phase conversion. By virtue of the L-dopamine, the hydrophilicity of the blend and hybrid flat sheet membrane is improved; the osmosis performance of the prepared inorganic filler and dopamine compound inorganic and organic hybrid membrane is remarkably improved; the pure water flux is increased; the filtering efficiency is high and the retention rate is increased.

Description

technical field

[0001] The invention belongs to the technical field of inorganic / organic hybrid separation, and specifically relates to a preparation method and application of an inorganic-organic hybrid membrane compounded with inorganic filler and dopamine Background technique

[0002] Organic polymer membrane materials have the advantages of good flexibility, high air permeability, low density, good film-forming properties, and low price, but they are easy to compact, poor in mechanical strength, solvent resistance, corrosion resistance, and heat resistance. The system does not provide sufficient selectivity and permeate flux. Inorganic membrane materials have the advantages of high mechanical strength, corrosion resistance, solvent resistance, high temperature resistance, etc., but they are brittle, difficult to process, poor in film formation, and more expensive at present. Organic-inorganic hybrid membrane materials combine the excellent properties of organic componen...

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