Composite membranes of polyacrylonitrile cross-linked with cellulose nanocrystals for emulsion separation and regeneration

As a result of fatigue and damage, the durability separation membranes remains major challenge for long-term use in multiphase systems, such as oily water emulsions. Here, we synthesize electrospun based on hydrolyzed polyacrylonitrile reinforced with cellulose nanocrystals (CNC). The nanofibers form highly porous systems that are held together by crosslinking, allowing fast mass transport while achieving high tensile strength elongation at break. exhibit shape retention upon immersion complex fluids. An underwater oil contact angle 141° enables efficient emulsion (98.2 % flux 1293 L·m−2·h−1 hexane-in-water emulsions) reliable operation least 20 filtration cycles. A similar performance is achieved emulsions toluene, petroleum ether, diesel, vegetable oils. Overall, designed composite endow stable three-dimensional structures, excellent durability, performance.