A Novel and Efficient Mixed Matrix Membrane (MMM) for Pervaporation of Ethanol/Water Mixtures owing to High and Homogeneous Loading of Zeolitic Imidazolate Frameworks-8 (ZIF-8) Nanoparticles

• Main Authors: Yu-Heng Deng, 鄧有衡
• Other Authors: Chia-Wen Wu
• Format: Others
• Language: en_US
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/69672769485896599301

碩士 === 國立臺灣大學 === 化學工程學研究所 === 103 === To overcome the problems of phase separation between polymer and fillers and low separation performance of a membrane at high filler loading, we have synthesized a novel and efficient mixed matrix membrane (MMM) by incorporating water-based synthesis of ZIF-8 nanoparticles into polyvinyl alcohol (PVA) membranes. The ZIF-8 nanoparticles without drying is preferred for the fabrication of PVA/ZFI-8 MMMs. The incorporation of ZIF-8 nanoparticles does increase both of the flux and separation factor of a PVA membrane. However, both of the pervaporation performances of PVA/ZIF-8 MMMs could be further improved by crosslinking with glutaraldehyde (GA). The result shows that PVA/ZIF-8 MMMs with GA have superb performances on pervaporation separation of ethanol dehydration. The best flux and separation factor of PVA/ZIF-8 MMMs with GA are 0.486 kg/m2h and 4725 respectively when the doped amount of ZIF-8 nanoparticles is 39.0 wt%. The permeability is three times as much as that of pristine PVA with GA crosslinked and the separation factor is nearly 9 times as much as that of the pristine PVA with GA crosslinked.