| abstract |
The invention discloses a modification method of a dehydration filter membrane and its application. Zwitterionic monomer A, alkenyl polyethylene glycol monomer B and (meth)acrylamide are synthesized in an air atmosphere and at room temperature. The block copolymer is then grafted to the dehydration membrane of different substrates by chemical bonding, which can not only improve the hydrophilicity of the membrane surface, but also make up for the defect that the membrane is easy to peel off, making it excellent in anti-pollution. and stable performance. In the present invention, the block copolymer is grafted onto the dehydration membrane by chemical bonding, and the coating exhibits excellent stability in strong acid, strong alkali and complex organic environment. Layer peeling, peeling and other problems. The dehydration membrane modified by the invention has excellent oil-water separation ability, the removal rate of water in organic matter can reach more than 99.9%, and is especially suitable for the dehydration process of organic amines. |