ELECTROLYTE TRANSPORT IN CHARGED SINGLE-ION TRACK CAPILLARIES

Authors
WOLF A REBER N APEL PY FISCHER BE SPOHR R
Citation
A. Wolf et al., ELECTROLYTE TRANSPORT IN CHARGED SINGLE-ION TRACK CAPILLARIES, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 105(1-4), 1995, pp. 291-293
Citations number
5
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
105
Issue
1-4
Year of publication
1995
Pages
291 - 293
Database
ISI
SICI code
0168-583X(1995)105:1-4<291:ETICST>2.0.ZU;2-1
Abstract
The pH and concentration dependence of the electric current through et ched single ion tracks in poly (ethyleneterephthalate) (PET) membranes is investigated using KCI solutions. The pH dependence of the current is attributed to the dissociation of the immobile carboxylic end grou ps attached to the PET leading to charged pore walls. As consequence a counterion layer near the pore walls is formed with increased conduct ivity. At low KCl concentrations surface conductivity can be several o rders of magnitude above the regular volume conductivity.