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.

Organic solvent nanofiltration, Pentaerythritol triacrylate, Photopolymerization, Poly[acrylate-co-amide], Tri (propylene glycol) diacrylate
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