Polysulfone membranes embedded with halloysites nanotubes: Preparation and properties

Nagla K. Mohamed, Viktor Kochkodan, Atef Zekri, Said Ahzi

Research output: Contribution to journalArticle

Abstract

In the present study, nanocomposite ultrafiltration membranes were prepared by incorporating nanotubes clay halloysite (HNTs) into polysulfone (PSF) and PSF/polyvinylpyrrolidone (PVP) dope solutions followed by membrane casting using phase inversion method. Characterization of HNTs were conducted using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy‐dispersive X‐ray spectroscopy (EDS), X‐ray diffraction (XRD), and thermogravimetric (TGA) analysis. The pore structure, morphology, hydrophilicity and mechanical properties of the composite membranes were characterized by using SEM, water contact angle (WCA) measurements, and dynamic mechanical analysis. It was shown that the incorporation of HNTs enhanced hydrophilicity and mechanical properties of the prepared PSF membranes. Compared to the pristine PSF membrane, results show that the total porosity and pore size of PSF/HNTs composite membranes increased when HNTs loadings were more than 0.5 wt % and 1.0 wt %, respectively. These findings correlate well with changes in water flux of the prepared membranes. It was observed that HNTs were homogenously dispersed within the PSF membrane matrix at HNTs content of 0.1 to 0.5 wt % and the PSF/HNTs membranes prepared by incorporating 0.2 wt % HNTs loading possess the optimal mechanical properties in terms of elastic modulus and yield stress. In the case of the PSF/PVP matrix, the optimal mechanical properties were obtained with 0.3 wt % of HNTs because PVP enhances the HNTs distribution. Results of bovine serum albumin (BSA) filtration tests indicated that PSF/0.2 wt % HNTs membrane exhibited high BSA rejection and notable anti‐fouling properties.

Original languageEnglish
Article number2
JournalMembranes
Volume10
Issue number1
DOIs
Publication statusPublished - Jan 2020

Fingerprint

Polysulfones
Nanotubes
Membranes
Povidone
Mechanical properties
Composite membranes
Hydrophilicity
Bovine Serum Albumin
polysulfone P 1700
clay
Scanning electron microscopy
Water
Dynamic mechanical analysis
Ultrafiltration
Angle measurement
Pore structure
Pore size
Contact angle
Yield stress
Thermogravimetric analysis

Keywords

  • Halloysite
  • Mechanical properties
  • Nanocomposite membranes
  • Polysulfone
  • Porous structure

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Process Chemistry and Technology
  • Filtration and Separation

Cite this

Polysulfone membranes embedded with halloysites nanotubes : Preparation and properties. / Mohamed, Nagla K.; Kochkodan, Viktor; Zekri, Atef; Ahzi, Said.

In: Membranes, Vol. 10, No. 1, 2, 01.2020.

Research output: Contribution to journalArticle

Mohamed, Nagla K. ; Kochkodan, Viktor ; Zekri, Atef ; Ahzi, Said. / Polysulfone membranes embedded with halloysites nanotubes : Preparation and properties. In: Membranes. 2020 ; Vol. 10, No. 1.
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