PES/SPES共混平板复合膜的制备及性能表征

采用浸没沉淀相转化法制备了聚醚砜/磺化聚醚砜（PES/SPES）共混平板复合膜,并对其进行性能表征.铸膜液配比对膜性能有较大的影响：聚合物浓度增大,膜孔径变小、膜厚增大、水通量变小;PVP的添加能有效改善复合膜的亲水性,膜的接触角随PVP含量增大而减小;膜的水通量随铸膜液中PVP含量的增大先增大后减小,当PVP含量为6%时,水通量达到最大值;接触角随共混聚合物中SPES含量的增大而减小,且随聚合物组份中SPES含量的增加,水通量先逐渐增加,并在质量配比为PES/SPES（8：2）时达到最大值,随后水通量逐渐下降.

Preparation and Characterization of PES/SPES Flat Composite Membrane

Polyethersulfone/sulfonated polyethersulfone(PES/SPES) flat composite membrane was prepared by the immersion phase inversion method,and its properties was tested.Properties of the membrane were affected by the proportions of casting solution.When the concentration of casting solution became denser,the pore and the thickness of membrane also became bigger,water flux decreased accordingly.PVP could improve the hydrophile of the composite membrane.With the increase of the proportions of PVP contact angle decreased,on the other hand water flux increased to a maximal value when PVP reached 6% and decreased then.In the same way,contact angle decreased with the increase of SPES.Water flux reached to a maximum when the mass proportion of PES to SPES was 8 to 2,then when SPES increase more water flux decreased contrarily.