聚醚砜基膜热稳定性对复合纳滤膜性能的影响

Jun XIANG,Tianyu LIU,Zongli XIE,Na TANG,Penggao CHENG,Xinxin HUA

Membrane Science and Technology（2020）

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Abstract

研究聚醚砜超滤基膜的热稳定性对界面聚合法制备复合纳滤膜性能的影响.加入TiO2纳米粒子可显著改善超滤膜的热稳定性,并随着基膜中TiO2的增加,超滤基膜的热稳定性也随之增加.基膜TiO2含量增至8％时,纳滤膜的水通量从27 L/(m2·h)逐渐增加到38 L/(m2·h),对NaCl的截留率从48％增加到58％,而对MgSO4的截留率保持不变.研究表明,提高微滤基膜的热稳定性有助于提高复合纳滤膜的水通量和截留率.

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