Application of polyurethane membrane with surface modified ZSM-5 for pervaporation of phenol/water mixture

作者：Ye Hong^*; Zhang Xiang; Zhang Zhongguo; Song Boyu; Song Weiwei

来源：Journal of Polymer Engineering, 2017, 37(8): 777-784.

DOI：10.1515/polyeng-2016-0358

• pervaporation
• polyurethane
• surface modification
• ZSM-5

In the present work, beta-cyclodextrin was grafted to the surface of ZSM-5 via 2,3-epoxypropyl trimethylammonium chloride (ETMAC) and epichlorohydrin (EPI) as the bridging agent by ion exchange and sequential grafting. The mixed matrix membranes were prepared using polyurethane (PU) and ZSM-5 before and after modification. Modified ZSM-5 and corresponding MMM were characterized by Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and scanning electron microscope (SEM). These membranes were applied for the removal of phenol from aqueous solution in pervaporation process. The results showed that modified ZSM-5 dispersed homogeneously in polymer. The flux and pervaporation separation index of PU increased greatly with a limited decrease in selectivity by the addition of modified ZSM-5. The increased feed temperature enhanced both the flux and separation factor of PU and modified PU membranes.

• 出版日期2017-10
• 单位轻工业环境保护研究所