Synergistic effects of organic and inorganic additives in preparation of composite poly(vinylidene fluoride) antifouling ultrafiltration membranes

Abstract

Composite ultrafiltration membranes were successfully fabricated by blending a nonionic surfactant and inorganic nanoparticles via a nonsolvent‐induced phase separation (NIPS) method. Brij35 was used as the nonionic surfactant and silica (SiO2) nanoparticles from rice husk ash, a low cost and widely available material, were used as the inorganic nanoparticles. The synergetic effect of both additives was used to tailor the membrane structure and properties because the selected additives showed completely different or, in some cases, the opposite effect on the membrane properties and structure. The combined effects of Brij and SiO2 resulted in a membrane with a noticeable improvement in membrane overall performance including pure water permeability, hydrophilicity, antifouling properties, long‐term stability, tensile strength, on the cost of a slight decrease in membrane elongation. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47737.

Production of High Flux Poly(Ether Sulfone) Membrane Using Silica Additive Extracted from Natural Resource

“…Many investigations have proven that increasing membrane surface hydrophilicity effectively reduces the fouling [10,11]. There are four general approaches to improve the hydrophilicity of PES membranes, namely, by (1) grafting, including photo-induced grafting and thermal-induced grafting, (2) surface coating, (3) plasma treatment, and (4) mixing PES polymers with hydrophilic materials [12,13].…”

“…Not only chemical silica but also the silica derived from natural product (i.e., strobe silica) has been used to increase membrane hydrophilicity [5]. Rice husk and bagasse are abundant natural sources of silica [13], and can be used as sustainable source for the silica additive for membrane fabrication. In this study, SiO 2 extracted from local rice husk and local sugarcane bagasse ashes sourced from Banda Aceh, Indonesia was employed as additives to improve the hydrophilicity and hydraulic performance of PES membranes.…”

Preparation and Characterization of Matrix Hybrid Membranes Polyvinylidene Fluoride/Polyvinylpyrrolidone/Silica Gel/Zinc Oxide for Cr(VI) Removal from Water

“…However, the synthetic organic additives present some limitations related to the high cost, low mechanical and chemical resistance; and also, their harmful effect to the environment. For this purpose, natural inorganic additives such as titanium dioxide (TiO2), zirconium dioxide (ZrO2), Silica (SiO2), Alumina (Al2O3), Zinc Oxide (ZnO) [9] may represent a real alternative on the improvement of the performance and characteristic of matrix hybrid PVDF membrane .Among the inorganic materials cited, silica gel (SG) and ZnO are considered as excellent nanoparticles with high adsorption capacity of Cr(VI) ions. This is due to the geometry of the pores, the specific surface, their high porosity, great mechanical and thermal resistance [10].…”

One-Pot Polymerization of Dopamine as an Additive to Enhance Permeability and Antifouling Properties of Polyethersulfone Membrane

“…Though the mechanism and behavior of fouling are complex, it has been widely reported that increasing the hydrophilicity of the membrane can be one of the viable solutions to limit the rate of foulant adsorption and thereby reducing the membrane fouling severity [ 14 , 15 , 16 , 17 , 18 , 19 ]. The enhancement of the hydrophilicity can be done by introducing a hydrophilic additive into the membrane materials through various techniques, such as blending [ 20 , 21 , 22 , 23 , 24 ], coating [ 25 , 26 ], grafting [ 27 ] and so forth.…”