Membrane pore characterization techniques - Status quo and future development
Journal
American Filtration and Separations Society Annual National Conference and Exposition 2010
Journal Volume
1
Pages
350-351
ISBN
9781617386299
Date Issued
2010
Author(s)
Abstract
A review of pore size, pore size distribution and morphology characterization techniques of filtration membranes will be presented. Most of the current available techniques can provide "bulk" pore properties in the filtration membranes only and could not provide "depth" profile of the pore properties and/or three-dimensional pore structure in the multilayer filtration membranes. The presentation will be divided into two parts: in the first part, a brief review of the current methods for characterizing filtration membrane pore properties will be given; in the second part, some innovative methods can give "depth profile" properties of pore and free volume in filtration membranes from micron-scale to angstrom will be introduced. Two of those innovative methods, nanotransmission x-ray microscope (NTXM) and position annihilation lifetime spectroscopic (PALS) techniques will be illustrated thoroughly with examples of microfiltration and nanofiltration membranes.
Type
conference paper