Ion conduction in crosslinked β-cyclodextrin gels

Gels of crosslinked β-cyclodextrin have been prepared using dimethylacetamide containing lithium, sodium and potassium triflate salts. Compositions were adjusted to produce materials with dry surfaces that showed no evidence of solvent leakage. Alternating current conductivity ( σ) measurements of i...

Full description

Saved in:
Bibliographic Details
Published in:Polymer (Guilford) 1998-12, Vol.39 (26), p.7139-7141
Main Authors: Cowie, J.M.G, Spence, G.H
Format: Article
Language:English
Subjects:
Applied sciences
crosslinked
Exact sciences and technology
ion conduction
Natural polymers
Physicochemistry of polymers
Starch and polysaccharides
β-cyclodextrin gels
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Gels of crosslinked β-cyclodextrin have been prepared using dimethylacetamide containing lithium, sodium and potassium triflate salts. Compositions were adjusted to produce materials with dry surfaces that showed no evidence of solvent leakage. Alternating current conductivity ( σ) measurements of ion transport in these systems were made over the temperature range 290–360 K. Systems containing KCF 3SO 3 exhibited the best range of conductivity values from σ=10 −4 S cm −1 (293 K) to σ=1.8×10 −3 S cm −1 (360 K). These systems also show a linear dependence of log conductivity on 1/temperature, with activation energies for ion transport in the range 32–48 kJ mol −1.
ISSN:0032-3861
1873-2291
DOI:10.1016/S0032-3861(97)10260-9