Fabrication and Characterization of Polysulfone Membrane Based On GO-SiO₂ Composite using Phase Inversion Method

Abstract

This research purpose to determine the material composition in the manufacture of polysulfone membranes by producing the best performance in the filtration application process. Polysulfone has good thermal and chemical stability properties that make it a candidate material in membrane manufacturing, but the hydrophobicity properties of polysulfone result in less than optimal membrane performance, so a blending process is needed to reduce hydrophobicity by maintaining the advantages of the membrane. The membrane was prepared using phase inversion with composite doping through the TEOS in situ hydrolysis method. The results of XRD identification showed that the diffraction pattern was successfully coated with silica with the amorphous phase, while the FTIR contained Si-O-Si bonds with a wave number of 1054 cm-1. The SEM surface morphology showed that the presence of silica and GO made the pore size larger with the pore size on the membrane 1,92 μm. The results of the contact angle test on the GO-SiO2/PSF variation of 0,8 obtained the lowest hydrophobicity value of 70,17°. The addition of composites will result in a larger pore size supported by the value of the contact angle, proving that the combination of the composite in polysulfone can increase the hydrophilicity of the membrane.

Study of Performance Graphene Oxide Modification of LiFePO4/C Material for The Cathode of Li-Ion Batteries

“…The materials used in this study include graphite powder, Sodium Nitrate (NaNO3), Potassium Permanganate (KMnO4), Lithium Iron Phosphate (LiFePO4), Carbon (C), Poly(vinylidene fluoride) PVDF, Acetylene Black, Sulfuric acid (H2SO4, 97%, Honeywell Fluka), Hydrochloric Acid (HCl) 1M (37%, LabGuard), Hydrogen Peroxide (H2O2, 30%, SmartLab), Ethanol (C2H2O5, 99.7%), N,N-Dimethylacetamide (DMAc, Sigma-Aldrich), Lithium hexafluorophosphate (LiPF6, Sigma-Aldrich), Acetone (C3H6O, SmartLab), Al foil sheet, Li sheet, Separator sheet, Aquades, Ice cubes. Graphene Oxide was prepared by modified Hummer's method [15]. The synthesis of LiFePO4/C-GO composite was made by a method [16].…”

Fabrication and Characterization of PSf/GO-SiO2 Membranes as Filtration of Detergent Contaminated Water

“…After the GO-SiO2 composite was made, it was continued with the membrane fabrication process using the phase inversion method. The method refers to research conducted by Angesti and Munasir [6]. In making the membrane for the GO-SiO2 composite, it is added with Polysulfone (PSf) polymer solution.…”