Synthesis of nanocomposite membrane containing bare and core shell nanoparticles with antifouling property

فاقد چكيده فارسي

The aim of this study was to investigate the performance of polyamide / polyacrylonitrile nanocomposite polymer membrane in the filtration of a sample of pharmaceutical contaminant. The polyacrylonitrile layer, synthesized by the phase inversion method, containing ZrO2 nanoparticles, and polyamide layer synthesized by interfacial polymerization and containing Fe3O4@ZrO2 nanoparticles. The analysis of Angular contact, point of zero charge (PZC), porosity and flux measurement on the membrane were performed. The PANZr2.68 / PAFe0.2 membrane, with 52% less contact angle than the raw membrane, is the most hydrophilic membrane synthesized between nanocomposite membranes. The presence of core-shell nanoparticles at the membrane surface also reduces the PZC of membrane from 5 to 4.5, which extends the range of negative charge presence on the membrane surface and the possibility of separating contaminants with negative loads. Porosity increased by 4% -8% in membranes using more concentrated core-shell nanoparticles. The porosity analysis showed that the PANZr2.68/PAFe0.2 membrane had a 38% lower porosity than the raw membrane. The results of the measurement of the primary and secondary flux of water also showed that the presence of 2.68% wt ZrO2 nanoparticles in the sublayer and 0.2% wt Fe3O4@ZrO2 nanoparticles in the membrane surface layer reduced the fouling and increased 30% water flux relative to the raw membrane.