聚乙二醇对聚偏氟乙烯/亲水性高聚物性能影响

Effects of PEG on PVDF/Hydrophilicity Polymer Blend Membranes

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1050 L/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.

Abstract: 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.