Organic solvent nanofiltration (OSN) is an efficient

low-energy and environmentally friendly phase-free separation process. Obviously

the core of OSN lies in the fabrication of solvent-resistant nanofiltration membranes. Although membrane materials reported in the literature such as 2D membranes

porous organic cages

etc

. have the potential for ultra-high performance

polymeric membranes provide key advantages in mass production and processability. Therefore

this review focuses on polymeric materials for OSN. This review summarizes the recent progress of polymeric materials

including emerging and traditional polymeric membranes. Then

a summary of recent progress about strategies developed for perm-selective nanofilms are presented

followed by a brief overview of commercial membrane technology for OSN. Finally

major challenges of OSN and future research directions are presented. Close interaction between the academic research and practical application would help improve greener and more sustainable manufacturing processes.