Silver-filled polyethersulfone membranes for antibacterial applications — Effect of PVP and TAP addition on silver dispersion

Composite polyvinylidene fluoride (PVDF) membrane impregnated with Fe2O3 nanoparticles and multiwalled carbon nanotubes for catalytic degradation of organic contaminants

“…Overall, the iron lost during the casting process was higher (12.5%) as compared to three days soaking (2.8%). This result is in the agreement with the previous studies where more nanofiller leaching was observed during the phase-inversion process due to enhanced nanoparticles diffusion into aqueous phase as compared to during the soaking process [29,43]. The iron leaching was further evaluated in the membrane filtration experiments under an applied pressure of 1.02 mPa.…”

Fabrication of Amino Acid Based Silver Nanocomposite Hydrogels from PVA- Poly(Acrylamide-co-Acryloyl phenylalanine) and Their Antimicrobial Studies

“…22,23 Most popular methods employed for encapsulation include emulsion polymerization, surfactant-free emulsion polymerization, emulsion-like polymerization, suspension polymerization, and dispersion polymerization. Among metal/polymer composites, silver composites have found important applications in material technologies like optical materials, 24 catalytic systems, antibacterial materials, 25,26 chemical nanosensors, and surface-enhanced Raman scattering (SERS). 27 However, the most significant challenge encountered in preparing silver/polymer nanoparticle encapsulation is that the nanoparticles cannot be dispersed in polymer matrix at the nano level by conventional techniques because the surface energies of tiny silver particles are very high, and these particles tend to agglomerate during mixing.…”

Improved Performance of CaCl 2 Incorporated Polyethersulfone Ultrafiltration Membranes

“…PVP increases the cast solution viscosity and thus ensures better pore interconnectivity when added in the optimum amount [40]. PES membranes blended with inorganic additives, especially metal oxide nanoparticles, resulted in composite membranes of increased flux but decreased solute rejection [36][37][38][39]. This was mainly due to the enlargement of the surface pores caused by the agglomeration of the metal oxide particles and their subsequent leaching during phase inversion [39].…”

“…These limitations of PES membrane is overcome by enhancing the surface hydrophilicity of the PES using different methods [27][28][29]. A number of research studies have been reported on the hydrophilization of PES membranes [30][31][32][33][34][35][36][37][38]. In these studies, a hydrophilic additive (usually inorganic or polymeric) is often added to the casting dope to prepare hydrophilic composite PES membranes.…”