Polysulfone membranes blended with ZnO nanoparticles for reducing fouling by oleic acid

C. P. Leo, W. P. Cathie Lee, A. L. Ahmad, Abdul Wahab Mohammad

Research output: Contribution to journalArticle

112 Citations (Scopus)

Abstract

Polysulfone (PSf) membranes are undesirably hydrophobic, thus they are susceptible to the fouling by most organic components including fatty acids. In this work, ZnO nanoparticles were blended into PSf membranes to improve its properties in reduction of fouling by oleic acid. The casting solution was prepared by dispersing 1-4 wt.% of ZnO nanoparticles (21-23 nm), 1 wt.% of PVA and PSf into 1-methyl-2-pyrrolidinone at 75 °C, with a stirring speed of 400 rpm. The weight ratio of polymer to solvent is maintained at 1:4.84. The composite membranes were then prepared using phase inversion method. The mean pore size of the composite membranes is slightly larger than the mean pore size of pure PSf membrane. However, the water contact angle greatly reduces from 85° to 63° when 2 wt.% of ZnO is added into Pf-2 membranes. Thermal stability of PSf membranes has significantly improved with the addition of ZnO. Although absorption peaks of ZnO are absent in FT-IR patterns, EDX analysis shows that ZnO nanoparticles are well distributed in the dense layer of Pf-2 membrane. Hence, Pf-2 membranes show the highest permeability and the least fouling by oleic acid.

Original languageEnglish
Pages (from-to)51-56
Number of pages6
JournalSeparation and Purification Technology
Volume89
DOIs
Publication statusPublished - 22 Mar 2012

Fingerprint

Polysulfones
Oleic acid
Oleic Acid
Fouling
Nanoparticles
Membranes
1-methyl-2-pyrrolidinone
Composite membranes
Pore size
polysulfone P 1700
Fatty acids
Contact angle
Energy dispersive spectroscopy
Polymers
Casting
Thermodynamic stability
Fatty Acids
Water

Keywords

  • Fouling
  • Nanoparticles
  • Polysulfone
  • Ultrafiltration
  • ZnO

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

Cite this

Polysulfone membranes blended with ZnO nanoparticles for reducing fouling by oleic acid. / Leo, C. P.; Cathie Lee, W. P.; Ahmad, A. L.; Mohammad, Abdul Wahab.

In: Separation and Purification Technology, Vol. 89, 22.03.2012, p. 51-56.

Research output: Contribution to journalArticle

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