Solvent-resistant composite nanofiltration membrane and preparation method thereof

The invention discloses a solvent-resistant composite nanofiltration membrane and a preparation method thereof, and belongs to the field of organic composite materials. The solvent-resistant compositenanofiltration membrane is composed of a poly-p-phenylene terephthamide short chain segment and polyarylethersulfone containing an amino branched structure. The preparation method comprises the following three steps: dissolving the poly (p-phenylene terephthamide) nanofiber, synthesizing amino branched structure-containing polyarylethersulfone and preparing the solvent-resistant composite nanofiltration membrane. The membrane prepared by the method has a high-flux transmission channel, good chemical stability and solvent resistance. 本发明公开了一种耐溶剂复合纳滤膜及其制备方法，属于有机复合材料领域。耐溶剂复合纳滤膜由聚对苯二甲酰对苯二胺短链段和含氨基支化结构聚芳醚砜构成。其制备方法包括聚对苯二甲酰对苯二胺纳米纤维的溶解、含氨基支化结构聚芳醚砜的合成和耐溶剂复合纳滤膜的制备三个步骤。本发明制成的膜具有高通量传输通道、良好的化学稳定性、耐溶剂性能。