Electrochemical studies of interaction between ceyltrimethylammonium bromide and alpha-, beta-cyclodextrins at various temperature

Authors
Gharibi, H Jalili, S Rajabi, T
Citation
H. Gharibi et al., Electrochemical studies of interaction between ceyltrimethylammonium bromide and alpha-, beta-cyclodextrins at various temperature, COLL SURF A, 175(3), 2000, pp. 361-369
Citations number
15
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ISSN journal
09277757 → ACNP
Volume
175
Issue
3
Year of publication
2000
Pages
361 - 369
Database
ISI
SICI code
0927-7757(200012)175:3<361:ESOIBC>2.0.ZU;2-1
Abstract
The adsorption of surfactant (S) to cyclodextrin (CD) is studied using ion selective electrodes. The data obtained indicate that inclusion complexes S (CD) and S(CD)(2) had formed between cetyltrimethyl ammonium bromide (CTAB) and cyclodextrin in aqueous environment. In addition to 1:1 complexes, sur factants form 1.2 complexes with alpha and beta -cyclodextrin as well. Inve stigation showed that the (K-1) for S(CD), that is the equilibrium constant , is greater than (K-2) for S(CD)(2). Finally thermodynamic parameters for the process (DeltaS(0), DeltaH(0), DeltaG(0)) have been calculated. (C) 200 0 Elsevier Science B.V. All rights reserved.