Journal
PLASMA SCIENCE & TECHNOLOGY
Volume 7, Issue 5, Pages 3062-3064Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1009-0630/7/5/020
Keywords
polymeric membrane; applying positron annihilation lifetime spectroscopy (PALS); nuclear track; desalination; permeability; reverse osmosis; supermolecular structure
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A review is presented of studies of polymeric membranes by applying positron annihilation lifetime spectroscopy (PALS). PALS has been used to study subnanometer-sized holes, to determine their size distribution and free-volume fractions, and to probe molecular-sized vacancies in glassy polymers. At present, PALS is believed to be a highly effective physical method for the examination of polymeric membranes.
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