| abstract |
The invention provides a quaternary phosphonium salt antibacterial polyamide water treatment membrane which comprises a porous support membrane, a separation functional layer and a coating which are sequentially arranged from bottom to top; the separation function layer and the coating layer are supported by the porous support membrane; the preparation method of the water treatment membrane is also provided, the S1 porous support membrane is formed, the S2 separation functional layer is aminated, the S3 separation functional layer is halogenated, the S4 coating is formed, the S5 is dried and post-treated, the quaternary phosphonium salt is one of the latest research achievements in the research field of antibacterial agents, experiments prove that the antibacterial effect of the quaternary ammonium salt is nearly two orders of magnitude of the antibacterial effect of the quaternary ammonium salt, and the antibacterial performance of the polyamide water treatment membrane is greatly improved after the quaternary phosphonium salt coating is modified. |