@article { author = {Elnaggar, Elsayed M. and Ali, Mohamed E.A. and Abo-Elfadl, Mostafa M. and Abdellah, Salah F. and Gad, Ehab S. and Sammak, Amr A. and El-kady, Gamal M.}, title = {Performance of Nanocomposite Polysulfone-Polyaniline Substrates for Enhanced Thin Film Membranes}, journal = {Egyptian Journal of Chemistry}, volume = {65}, number = {10}, pages = {543-550}, year = {2022}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2022.60278.3290}, abstract = {Membranes fouling and their degradation using free chlorine are the most common challenges in the desalination process. A blend nano-composite polysulfone /polyaniline were prepared as a substrate for the active polyamide layer. In this work, nano polyaniline emeraldine salt was prepared using a simple chemical oxidative polymerization method. It was added to the polysulfone (PS) substrate layer in the presence of sodium lauryl sulfate as a hydrophilic agent to enhance reverse osmosis properties of the thin film composite membrane. Unmodified and modified polyaniline nano-particles membranes were characterized using XRD, EDX, FT-IR, SEM, particle size distribution and contact angle. The membranes performance was evaluated in terms of water flux and salt rejection using a cross-flow filtration unit. The results showed that the nano-composite membrane had much better water permeability (66 L/m²/h) compared to the control membrane (57 L/m² /h) without significant change in the percentage of salt rejection. The resistance of membranes to bio-fouling and chlorine degradation was evaluated using bovine serum albumin (BSA) as fouling model and sodium hypochlorite, respectively. The modified membrane was more resistant to bio-fouling and chlorine attack because of the strong electrostatic repulsion between poly-aniline PANI and BSA. The prepared polysulfone -polyaniline nano-composite substrate has been enhanced the performance of thin film composite as a reverse osmosis membrane.}, keywords = {Thin film composite membranes,Polyaniline,polysulfone,Fouling,Chlorination, sodium lauryl sulfate and Reverse osmosis membrane}, url = {https://ejchem.journals.ekb.eg/article_215491.html}, eprint = {https://ejchem.journals.ekb.eg/article_215491_83a210127fbdc27264190db26352d750.pdf} }