两步法制备了ZIF-8填充聚二甲基硅氧烷（PDMS）渗透汽化膜PDMS/ZIF-8，用以分离水中正丁醇。并对该膜的化学结构、形貌及热稳定性进行了表征。结果表明：该膜对正丁醇有很高的选择渗透性，随着ZIF-8添加量的增加，分离因子先增加后下降，而总通量单调下降。当ZIF-8添加量为2wt%时（PDMS/ZIF-8-2膜），分离因子达到最高。另一方面，随着操作温度的上升，PDMS/ZIF-8-2膜的通量和分离因子都增加。在60oC，料液浓度为0.96wt%时，PDMS/ZIF-8-2膜的分离因子及通量最高可达49.24和8.43 kg?m/(m2h)。

ZIF-8 filled polydimethylsiloxane (PDMS) membranes, PDMS/ZIF-8, were prepared by a two-step polymerization process, which were used as membrane material to recover n-butanol from aqueous solution by pervaporation (PV). The membranes demonstrated high n-butanol permselectivity and with the increase of ZIF-8 loading, the separation factor increased initially and then decreased, while the total flux decreased. The PDMS/ZIF-8 membranes containing 2 wt% ZIF-8, PDMS/ZIF-8-2, showed the highest separation factor. On the other hand, the separation factor and total flux of PDMS/ZIF-8-2 membrane increased with the increase of temperature. The separation factor and total ?ux reached 49.24 and 8.43 kg?m/(m2h), respectively, at 60 oC when the feed concentration of n-butanol is 0.96 wt%.

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