Development of a dopamine-based surface modification technique to enhance protein fouling resistance in commercial ultrafiltration membranes
Yükleniyor...
Dosyalar
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study introduces a new method for modifying ultrafiltration membranes using dopamine polymerization to overcome issues such as prolonged polymerization times, potential pore narrowing, and insufficient formation of hydrophilic groups. The technique involves continuously supplying oxygen (O2) gas from the porous backside of the membrane while simultaneously applying an aqueous dopamine solution to the active top surface. TGA and XPS analyses revealed that 10 kDa commercial polysulfone (PSF) membranes coated with O2 backflow contained more dopamine than those modified using the classical method. Additionally, changes in contact angle and zeta potential values were more pronounced with the O2 backflow method. Dopamine coating for 10 and 20 min improved the pure water permeance of the PSF membrane, whereas a 40-min coating decreased it. Notably, the reduction in permeance was 2.5 times less with the O2 backflow method than with the classical method. The classical dopamine coating method did not enhance the PSF membrane's resistance to fouling during whey filtration; in fact, 20 and 40-min coatings caused more significant flux declines compared to the unmodified membrane. Conversely, 10 and 20 min of PDA coating under O2 backflow improved fouling resistance, though this benefit disappeared with a 40-min coating.
Açıklama
Anahtar Kelimeler
Dopamine Polymerization, Protein Fouling, Whey Filtration, Polysulfone Ultrafiltration Membrane
Kaynak
Journal of Membrane Science
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
717
Sayı
Künye
Onuk, E., Gungormus, E., Cihanoğlu, A., & Altinkaya, S. A. (2025). Development of a dopamine-based surface modification technique to enhance protein fouling resistance in commercial ultrafiltration membranes. Journal of Membrane Science, 717. https://doi.org/10.1016/j.memsci.2024.123554
