A zif-90 loaded switchable superwettability polyacrylonitrile membrane, and a preparation method and application thereof
By introducing hydrophilic polymers into a polyacrylonitrile substrate and constructing ZIF-90 particle micro/nano structures, a ZIF-90-loaded switchable superwetting membrane was prepared, solving the problem of insufficient research on the hydrophilicity of ZIF-90 particles. This achieved efficient oil-water separation and self-cleaning performance, making it suitable for various oil-water separation applications.
CN117323836BActive Publication Date: 2026-07-03ZHEJIANG UNIV OF TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG UNIV OF TECH
- Filing Date
- 2023-10-31
- Publication Date
- 2026-07-03
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Figure CN117323836B_ABST
Abstract
This invention discloses a ZIF-90-loaded polyacrylonitrile membrane with switchable superwetting properties, its preparation method, and its applications. This oil-water separation membrane is prepared by introducing a hydrophilic polymer into a polyacrylonitrile substrate via free radical polymerization. After solvent-inducing phase separation, the polymer membrane is modified with ZIF-90 particles to construct a micro / nano rough surface structure. The preparation method described in this invention uses readily available raw materials and is highly operable. The prepared polymer film exhibits switchable wettability, demonstrating superamphilic properties in air, superoleophobic properties underwater, and superhydrophobic properties underwater. It exhibits excellent separation capabilities for various immiscible oil-water mixtures and stable oil-water emulsions. It has broad application value in industrial waste oil recovery, sewage treatment, and marine oil spill recovery.
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