Novel High Flux Poly(m-phenylene isophtalamide)/TiO2 Membranes for Ultrafiltration with Enhanced Antifouling Performance

Abstract

Wide application of ultrafiltration in different industrial fields requires the development of new membranes with tailored properties and good antifouling stability. This study is devoted to the improvement of ultrafiltration properties of poly(m-phenylene isophtalamide) (PA) membranes by modification with titanium oxide (TiO2) particles. The introduction of TiO2 particles improved membrane separation performance and increased antifouling stability and cleaning ability under UV irradiation. The developed membranes were characterized by scanning electron and atomic force microscopy methods, the measurements of water contact angle, and total porosimetry. The transport properties of the PA and PA/TiO2 membranes were tested in ultrafiltration of industrially important feeds: coolant lubricant (cutting fluid) emulsion (5 wt.% in water) and bovine serum albumin (BSA) solution (0.5 wt.%). The PA/TiO2 (0.3 wt.%) membrane was found to possess optimal transport characteristics in ultrafiltration of coolant lubricant emulsion due to the highest pure water and coolant lubricant fluxes (1146 and 32 L/(m2 h), respectively), rejection coefficient (100%), and flux recovery ratio (84%). Furthermore, this membrane featured improved ability of surface contamination degradation after UV irradiation in prolonged ultrafiltration of BSA, demonstrating a high flux recovery ratio (89–94%).

Preparation and Hemocompatibility of Novel Antioxidant‐Modified Polyethersulfone Membranes as Red Blood Cell Thrombosis Inhibitors

“…[37][38][39][40] Our previous studies and the work of Pandy et al showed that higher membrane hydrophilicity was related to better dialysis performance. [23,41,42] Compared with the parent membrane, the Tio-PES membranes showed a lower initial SWCA, and the drop in SWCA increased with time, indicating improved hydrophilicity (Figure 3D). This in-crease in hydrophilicity could be attributed to the hydrophilic groups carried by tiopronin, as well as the reduced surface roughness of the modified membranes.…”

Nanofiltration Mixed Matrix Membranes from Cellulose Modified with Zn-Based Metal–Organic Frameworks for the Enhanced Water Treatment from Heavy Metal Ions

“…The supported CMC membrane was prepared by physical adsorption as follows [ 31 ]: 1 wt.% CMC solution dissolved in distilled water at 40 °C under constant stirring, and the following sonication was deposited onto porous membranes (substrates) from CA, Poly(m-phenylene isophtalamide) (PA), and polyacrylonitrile (PAN) with the following solvent evaporation at ambient temperature for 12 h to form a thin dense selective layer. Porous PA and PAN substrates were prepared without the use of a polyester substrate from 15 wt.% casting polymer solutions by the phase inversion method via a non-solvent induced phase separation (NIPS) technique according to the previously described in the work’s procedures [ 32 , 33 ]. To use supported membranes in nanofiltration of aqueous heavy metal ions solutions, the cross-linking of CMC chains was carried out by the immersion of the supported membranes in an aqueous solution containing 1 wt.% glutaraldehyde (GA) and 0.5 wt.% sulfuric acid (H 2 SO 4 ) for 1 min.…”

Development of anti-foulant ultraviolet-assisted polyvinyl alcohol layer on the polysulfone-based nanohybrid membrane for industrial rubber wastewater decontamination

“…Numerous efforts have been paid to reduce membrane fouling; polyelectrolyte multilayer is an example of a fouling reduction approach in nanofiltration membranes (Evdochenko et al, 2021). Another study demonstrated that membrane fouling can be controlled by embedding hydrophilic materials (nanoparticles or polymers) into a polymeric membrane (Dmitrenko et al, 2021;Evdochenko et al, 2021;Li F. et al, 2021). Group of hydrophilic polymers, including polyethylene glycol (PEG), polyvinyl alcohol (PVA), polyvinyl pyrrolidone (PVP), polymethyl methacrylate (PMMA), polyacrylic acid (Chiao et al, 2020), polyelectrolytes, and others for surface coating of the membrane has been used to tackle fouling formation on the membrane surface (Liu et al, 2021;Vaysizadeh et al, 2021;Wang et al, 2021;Wanke et al, 2021).…”