The present invention discloses a
plant polyphenol modified
polymer membrane as well as a preparation method and application thereof, in particular relates to the field of modified
polymer membranes with anti-
fouling properties. In the prior art, due to low
surface energy of the
polymer membrane, the polymer membrane is susceptible to
contamination with proteins, oils and the like and causes a series of temporary or permanent
pollution problems. The polymer membrane provided by the invention utilizes the super-strong
adhesive ability of
plant polyphenols and the coordination of polyphenols andmetal ions to build a
hydrophilic coating on the surface of a
hydrophobic polymer membrane. The polymer membrane provided by the invention has the advantages of simplicity, high efficiency, mild reaction condition and strong practicability. The controllable hydrophilic modification of a
hydrophobic polymer can be realized by changing the conditions of the dip-
coating time, the concentration of aplant
polyphenol mixed solution, the pH, the temperature and the like, and a high
permeation flux can be maintained in the course of cross-flow continuous work, so that the polymer membrane has a verygood application prospect in the field of
water treatment. The invention also opens up an effective way, which is simple and easy to operate and has strong universality, for modification of polymer membranes under mild conditions.