中文摘要：

文章以聚乙二醇为聚偏氟乙烯／亲水性高聚物共混体系的添加剂，研究了聚乙二醇含量对聚偏氟乙烯／亲水性高聚物共混膜的水通量、孔径、孔隙率和耐污染性的影响。结果表明当共混体系中聚乙二醇含量为7．5％，膜的最大水通量达到1050L／m2·h，孔隙率为73．0％，平均孔径为0．19μm，聚乙二醇含量对PVDF／B共混膜的结构和性能变化起了重要的作用。可通过调节聚乙二醇的含量来控制膜的孔径和孔隙率。

英文摘要：

Effects of PEG on PVDF / hydrophilicity polymer blend membranes were studied. Polyethylene glycols （PEG） were added into PVDF/ Hydrophilicity Polymer （B） blend system. The content of PEG plays an important role in the structure and properties of the final membranes. By adding PEG, high -flux and big pore size porous membrane was obtained. When the content of PEG is 7. 5% , the pure water flux, ratio of pore and mean pore size of blend membrane arrive at 1050 L/m2 · h,73.0% and 0.19μm, respectively. Thus, the porous membrane with different pore size can be obtained by regulating the contents of PEG in PVDF/B blend solution.