  Nanocomposite membranes are an emerging filtration material in the production
of clean water. Recently, the fabrication of porous nanocomposite membranes via
solvent transfer induced phase separation (STrIPS) was introduced. During
STrIPS, the phase separation of two immiscible liquids is arrested by the
attachment of nanoparticles at the liquid-liquid interface, generating a porous
particle-stabilized membrane template. STrIPS nanocomposite membranes, however,
have so far only been produced as hollow fibers. To overcome this, we designed
a roll-to-roll (R2R)-process for the continuous fabrication of flat-sheet
nanocomposite membranes via STrIPS. We produce the STrIPS membrane by printing
the membrane precursor on a carrier substrate. This allows for the continuous
collection of STrIPS membranes with control over the membrane dimensions.
Contact angle measurements elucidate the wetting dynamics of the STrIPS
membrane on the substrate. Furthermore, we demonstrate control over the
membrane pore structure by varying the precusor liquid composition and by
changing the particle modification and loading in the membrane. With this, the
R2R-approach may stimulate further advancements in the fabrication of
flat-sheet nanocomposite membranes via STrIPS.
