Ultrafiltration Mixed Matrix Membranes Based on Mesoporous Silica (MCM-41, HMS)Embedded in Polysulfone

Abstract

Three composite membranes (M1-M3), with mesoporous silica (MCM-41 or HMS-C12/C16-type) embedded in polysulfone (Psf) were obtained by phase-inversion method and their performances were tested for use in ultrafiltration membrane processes. The structures of M (Psf 12%, reference membrane), M1 (Psf 12% + MCM-41), M2 (Psf 12% + HMS-C12), M3 (Psf 12% + HMS-C16) have been assessed by FTIR, TG-DSC and SEM-EDAX and the morphology and their hydrodynamic performances have been evaluated by contact angle measurements, dead-end and cross-flow filtration experiments.

Coal Fly Ash Derived Silica Nanomaterial for MMMs—Application in CO2/CH4 Separation

“…The MCM-41 insertion influenced the intensity of the bands presented in the matrix. In the MMMs spectra, the vibration band characteristic to Si-O-Si, at 1100 cm −1 is covered by the intensity of the polysulfone matrix [31]. Additionally, the typical bands for polysulfone matrix were observed: at 831 cm −1 attributed to C-H bond; at 1010 and 1100 cm −1 assigned to C-C bond; at 1144 and 1315 cm −1 attributed to Ar-SO2-Ar (Ar-aromatic); at 1233 cm −1 assigned to Ar-O-Ar stretching [32].…”

Nanofiltration Composite Membranes Based on KIT-6 and Functionalized KIT-6 Nanoparticles in a Polymeric Matrix with Enhanced Performances

“…In order to reduce these limitations and to obtain high performance polymeric membranes, [ 5 ] dispersed inorganic nanoparticles into a polymer matrix, forming so called polymeric nanocomposite membranes [ 6 , 7 , 8 , 9 ]. The obtained membranes show superior performances, such as mechanical toughness, thermal properties, permeability, and selectivity, compared to polymeric membranes.…”