Improvement on physical properties of polyethersulfone membranes modified by poly(1 ‐vinylpyrrolidone) grafted magnetic Fe3O4@SiO2 nanoparticles

Polyethersulfone (PES) and poly(l ‐vinylpyrrolidone) (PVP) were used to prepare ultrafiltration membranes with grafted Fe3O4 magnetic nanoparticles (PVP ‐g‐Fe3O4@SiO2) Polyethersulfone (PES) and poly(1 ‐vinylpyrrolidone) (PVP) were used to prepare ultrafiltration membranes with grafted Fe3O4 magnetic nanoparticles (PVP ‐g‐Fe3O4@SiO2). The structure of synthesized PVP ‐g‐Fe3O4@SiO2 was confirmed by FT ‐IR and SEM analysis. Physical properties of blend membranes such as thermal resistance, Tensile strength, water uptake, and hydrophilicity were also investigated. Blended membranes of PES/PVP‐g‐Fe3O4@SiO2 have exhibited higher thermal resistance due to increasing the modified nanoparticle content. The hydrophilicity of the synthesized PES/PVP ‐g‐Fe3O4@SiO2 membranes also improved by increasing the PVP ‐g‐Fe3O4@SiO2 content. As expected, increasing the hydrophilicity of blended membrane, caused enhancement of fouling resistance in membranes. Results showed that the content of PVP ‐g‐Fe3O4@SiO2 has different effects on the properties of synthesized composite membranes. Despite increasing the content of PVP ‐g‐Fe3O4@SiO2 has a negative effect on elongation, positive effects on maximum stress was observed. Moreover, the water uptake of synthesized membranes was significantly enhanced in comparison to other similar studies.
Source: Applied Organometallic Chemistry - Category: Chemistry Authors: Tags: FULL PAPER Source Type: research