A superhydrophobic film with high water vapor transmission prepared from block copolymer micelle solution via VIPS method

The potential of polystyrene-block-polybutadiene-block-polystyrene triblock co-polymer as a base-polymer of polymer inclusion membranes (PIMs)

“…Figure 8 shows the water contact angles as a function of the concentration of extractant (i.e., D2EHPA, LIX84I) added to the membrane. The pure polymer membrane, prepared under identical conditions as those used for the PIM preparation (i.e., solvent casting), showed a CA of 92.8±0.9°, which was consistent with that of the SBS film reported by Ke et al [26]. A CA greater than 90° suggested that the pure SBS membrane had a hydrophobic surface.…”

Preparation of a composite coating film via vapor induced phase separation for air purification and real-time bacteria photocatalytic inactivation

“…Our previous results [ 28 , 29 ] demonstrate that casting the micelle solution of the block copolymer of SBS in an organic non-solvent of ethanol to evaporate solvent will accelerate the vapor induced phase separation process, so that the obtained film exhibits nodular morphology to display porous microstructure and superhydrophobicity. In this work, it is aimed to expand the functions of such films.…”

“…The polymer SBS was dissolved in EA under stirring at 40 °C to obtain a light blue micelle solution [ 28 ] with a polymer concentration of 10 mg/mL. After the solution was cooled to room temperature, desired amount of P25 was added, and sonicated for 30 min to obtain an even slurry.…”

“…After the purification was continued for 1 h, the inner wall of the vessel at the air-out side was rinsed with PBS buffer for 3 times. The collected solution was dropped on glass slide, stained with Gram stain, dried and observed under a microscope (MO, CL-S, Nikon, Japan) [ 28 , 35 ]. Moreover, the surface of the coating film was rinsed for 3 times with 10 mL PBS buffer, and 50 μL of the collected solution was cultured in an incubator at 37 °C for 24 h via the plate coating method [ 36 , 37 ].…”

“…In our previous work, superhydrophobic membranes have been successfully prepared through a vapor-induced phase separation (VIPS) strategy, and the high porosity of over 70% and the mean pore diameter about 500 nm provide the membranes with high air permeability and interception of saccharomycetes [ [28] , [29] , [30] ]. In this work, it is aimed to take the advantages of such membranes and of the nano-TiO 2 to prepare a superhydrophobic composite film.…”