A novel poly[acrylate-co-amide] network composite nanofiltration membrane was synthesized via the photopolymerization on the top of amine-terminated polyetherimide using the photoinitiator BP and the monomers of TPGDA and PETA, of which the void size in the toplayer network can be modulated via a solvent immersion. The synthesized UV-15T2P-11 network membrane showed the permeance of 7.1 L m−2 h−1 MPa−1 and SBB rejection of 95% in THF. Then, molecular simulations suggested that DMF immersion can make the void size in the membrane toplayer increased from the pristine 1.0 nm to 1.7 nm. DMF-activated membrane p-UV-15T2P-11 shows excellent performance and long-term stability, with the permeance of 13.2 L m−2 h−1 MPa−1 and the SBB rejection of 91% in THF. These results illustrate that the photopolymerized network polymers combined with solvent activation are promising materials to manufacture organic solvent nanofiltration membranes.

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Separation and Purification Technology
Department of Mechanical and Aerospace Engineering

Wang, Y. (Yifei), Gu, J, Zhou, A. (Ayang), Kong, A. (Aiqun), Alwan Almijbilee, M.M. (Muntadher M.), Zheng, X. (Xiaokuo), … Li, W. (Wei). (2020). Poly[acrylate-co-amide] network composite via photopolymerization for organic solvent nanofiltration separation. Separation and Purification Technology, 246. doi:10.1016/j.seppur.2020.116855