Visualisation of an ultrafiltration membrane by non-contact atomic force microscopy at single pore resolution

W. Richard Bowen, Nidal Hilal, Robert W. Lovitt, Peter M. Williams

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Non-contact atomic force microscopy (AFM) has been used to investigate the surface pore structure of a polyethersulfone ultrafiltration membrane of specified molecular weight cut off (MWCO) 25 000 (ES625, PCI Membrane Systems). Excellent images at up to single pore resolution were obtained. This is the first time that AFM images of a membrane at such high resolution have been presented. Analysis of the images gave a mean pore size of 5.1 nm with a standard deviation of 1.1 nm. The results have been compared to previously published studies of membranes of comparable MWCO using contact AFM and electron microscopy. Non-contact AFM is a powerful means of studying the surface pore characteristics of ultrafiltration membranes.

Original languageEnglish
Pages (from-to)229-232
Number of pages4
JournalJournal of Membrane Science
Volume110
Issue number2
DOIs
Publication statusPublished - 21 Feb 1996
Externally publishedYes

Fingerprint

Atomic Force Microscopy
Ultrafiltration
Atomic force microscopy
Visualization
atomic force microscopy
membranes
Membranes
porosity
molecular weight
cut-off
Molecular Weight
Molecular weight
Pore structure
Electron microscopy
Pore size
standard deviation
electron microscopy
Electron Microscopy
high resolution

Keywords

  • Atomic force microscopy
  • Pore size distribution
  • Ultrafiltration

ASJC Scopus subject areas

  • Filtration and Separation
  • Polymers and Plastics

Cite this

Visualisation of an ultrafiltration membrane by non-contact atomic force microscopy at single pore resolution. / Bowen, W. Richard; Hilal, Nidal; Lovitt, Robert W.; Williams, Peter M.

In: Journal of Membrane Science, Vol. 110, No. 2, 21.02.1996, p. 229-232.

Research output: Contribution to journalArticle

Bowen, W. Richard ; Hilal, Nidal ; Lovitt, Robert W. ; Williams, Peter M. / Visualisation of an ultrafiltration membrane by non-contact atomic force microscopy at single pore resolution. In: Journal of Membrane Science. 1996 ; Vol. 110, No. 2. pp. 229-232.
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