ION CONDUCTION IN CROSS-LINKED BETA-CYCLODEXTRIN GELS

Citation
Jmg. Cowie et Gh. Spence, ION CONDUCTION IN CROSS-LINKED BETA-CYCLODEXTRIN GELS, Polymer, 39(26), 1998, pp. 7139-7141
Citations number
26
Categorie Soggetti
Polymer Sciences
Journal title
ISSN journal
00323861
Volume
39
Issue
26
Year of publication
1998
Pages
7139 - 7141
Database
ISI
SICI code
0032-3861(1998)39:26<7139:ICICBG>2.0.ZU;2-8
Abstract
Gels of crosslinked beta-cyclodextrin have been prepared using dimethy lacetamide containing lithium, sodium and potassium triflate salts. Co mpositions were adjusted to produce materials with dry surfaces that s howed no evidence of solvent leakage. Alternating current conductivity (sigma) measurements of ion transport in these systems were made over the temperature range 290-360 K. Systems containing KCF3SO3 exhibited the best range of conductivity values from sigma = 10(-4) S cm(-1) (2 93 K) to sigma = 1.8 X 10(-3) S cm(-1) (360 K). These systems also sho w a linear dependence of log conductivity on l/temperature, with activ ation energies for ion transport in the range 32-48 kJ mol(-1). (C) 19 98 Elsevier Science Ltd.