溶剂对膜的溶胀，使膜的物理结构发生变化，进而对膜萃取传质性能产生一定的影响。本文以３０％ＴＢＰ（煤油）－醋酸－水、正丁醇－醋酸－水和２０％７３０１（煤油）－醋酸－水为实验体系在聚砜和聚四氟乙烯微孔平板膜器中系统地研究了溶胀对膜萃取总传质系数的影响。结果表明，微孔膜发生溶胀后孔隙率发生明显的变化，其总传质系数有较大的下降 Solvent on the membrane swelling, the physical structure of the membrane changes, and thus the membrane mass transfer performance have a certain impact. In this paper, 30% TBP (kerosene) - acetic acid - water, n - butanol - acetic acid - water and 20% 7301 (kerosene) - acetic acid - water as the experimental system in polysulfone and Teflon microporous flat- The effect of swelling on total mass transfer coefficient of membrane extraction was studied. The results show that the porosity of the microporous membrane changes significantly after swelling, and its total mass transfer coefficient is greatly decreased