Polysulfone‐based amphiphilic copolymers: Effect of hydrophilic content on morphology and performance of ultrafiltration membranes

• Published in: Journal of applied polymer science Vol. 137; no. 4
• Main Authors: Aktas Eken, Gozde, Acar, Metin H.
• Format: Journal Article
• Language: English
• Published: Hoboken, USA John Wiley & Sons, Inc 20-01-2020; Wiley Subscription Services, Inc
• Subjects: antifouling; ATRP; Chemical industry; Composition effects; Contact angle; Copolymers; Graft copolymers; Hydrophilicity; Materials science; membrane; Membranes; Miscibility; Morphology; Phase inversion; Phase shift; Polyethylene glycol; Polymers; polysulfone; Polysulfone resins; surface modification; Ultrafiltration; Wettability
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.48306

ABSTRACT
A series of polysulfone (PSf)‐based amphiphilic graft copolymers were synthesized to investigate the effects of copolymer composition on membrane morphology and performance. PSf‐based ultrafiltration membranes were prepared by phase inversion method using the blends of PSf and PSf‐g‐poly(ethylene glycol) methyl ether methacrylate (PEGMA) copolymers. Membranes were evaluated in terms of pure water permeability, flux recovery ratio (FRR), protein rejection, and contact angle. The morphology of the membranes was investigated by scanning electron microscopy. Contact angle of membranes was decreased from 85.7° to 51.6°, while the FRR was greatly increased from 55 to 95% upon increasing the PEGMA content of copolymers from 20 to 70 wt %. Results indicated that the ratio of hydrophilic/hydrophobic segments in amphiphilic structures is one the key parameters that control the phase inversion process by altering miscibility, viscosity, and wettability of casting solutions. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48306.