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Etching of tracks of accelerated heavy ions in poly(ethylene terephthalate) and some physicochemical properties of track membranes
Authors:A I Vilensky  A L Tolstikhina
Affiliation:(1) A. V. Shubnikov Institute of Crystallography, Russian Academy of Sciences, 59 Leninsky prosp., 117333 Moscow, Russian Federation
Abstract:The features of etching of latent tracks of heavy ions in poly(ethylene terephthalate) up to pore formation were investigated. It was found that the etching process included the following stages: (1) electrolyte penetration into the pores due to capillary forces and removal of monomeric radiolysis products; (2) swelling of the cross-linked (due to secondary electrons) polymer areas around the tracks to give the gel layer; (3) removal of the gel layer and the formation of track membranes with a pore radius of 40–50 Å. The radiation-chemical processes in polymers influence the physicochemical properties of the obtained membranes. The microrelief of the membrane surface was studied by atomic-force microscopy.
Keywords:membrane  heavy ions  tracks  lavsan
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