Su arıtma membranları için yüksek dallanmış, fonksiyonel poli(arilen eter sülfon)ların sentezi ve karakterizasyonu

This Ph.D. study focuses on the design of novel highly branched poly(arylene ether sulfone)s (HBPAES) for ultrafiltration (UF) and nanofiltration (NF) membranes and their synthesis via one-step A2+B3 copolymerization approach in an effort to introduce them as the new generation, functional oligomeric and polymeric raw materials for water purification membranes that can overcome low flux, high cost, and operational inefficiency issues in membrane processes. Within this scope, the effect of degree of branching, the distance between branched points, end-group functionalization, self-cross-linking ability, and incorporation of inorganic groups into the polymer backbone were investigated systematically on the final film and membrane properties. Moreover, to use in the thin film composite (TFC) NF membrane fabrication, a series of sulfonated, functional HBPAES have been synthesized that the final hydrophilic/hydrophobic characters were able to be tuned by the incorporation of ionic moieties into the backbone. In this context, the first-time fabrication of poly(arylate sulfone)-based TFC NF membranes and their evaluation in water purification applications were reported.