Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/167521
Title: Teflon AF2400/Polyethylene organic solvent nanofiltration membranes
Authors: SHI GUIMIN 
CHUNG TAI-SHUNG, NEAL 
Keywords: Organic solvent nanofiltration (OSN), Teflon AF2400, Polyethylene, Solvent recovery, Vegetable oil processing
Issue Date: 1-Mar-2020
Citation: SHI GUIMIN, CHUNG TAI-SHUNG, NEAL (2020-03-01). Teflon AF2400/Polyethylene organic solvent nanofiltration membranes. ScholarBank@NUS Repository.
Related Datasets: https://doi.org/10.1016/j.memsci.2020.117972
Abstract: We have successfully developed Teflon AF2400/polyethylene (PE) OSN membranes by depositing ultra-thin Teflon AF2400 membranes on a commercially available PE support through coating Teflon solutions on the support. By adjusting the coating concentration and the relative humidity of drying air, a ~100 nm Teflon AF2400 layer is deposited on the PE support. The newly developed membrane has high permeances of 3~8 L/m2-h-bar for ethyl acetate, toluene and hexane. Furthermore, the membrane has a very low MWCO of ~150 g/mol. In addition, the membrane shows stable separation performance over 2 weeks for the separation of acetone/rose bengal. Lastly, the membrane is demonstrated to be promising for the separation of oil/acetone and oil/hexane with ~99.5% rejection of triglycerides using 20 wt% oil/solvent feeds. With no cross-linking or pore preserving agents for the Teflon/PE membranes, the fabrication process of the membranes is greatly simplified.
URI: https://scholarbank.nus.edu.sg/handle/10635/167521
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