Forces between bilayers of cetyltrimethylammonium bromide in micellar solutions

Pashley, R. M., McGuiggan, P. M., Horn, R. G. and Ninham, B. W. 1988, Forces between bilayers of cetyltrimethylammonium bromide in micellar solutions, Journal of colloid and interface science, vol. 126, no. 2, pp. 569-578, doi: 10.1016/0021-9797(88)90156-7.

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Title Forces between bilayers of cetyltrimethylammonium bromide in micellar solutions
Author(s) Pashley, R. M.
McGuiggan, P. M.
Horn, R. G.
Ninham, B. W.
Journal name Journal of colloid and interface science
Volume number 126
Issue number 2
Start page 569
End page 578
Total pages 10
Publisher Academic Press
Place of publication Maryland Heights, Mo.
Publication date 1988-12
ISSN 0021-9797
Keyword(s) Ammonium Compounds--Adsorption
Colloid Chemistry
Soap--Thin Films
Summary A direct force-measuring technique has been used to study the interaction forces between adsorbed CTAB (cetyltrimethylammonium bromide) bilayers at concentrations well above the CMC (critical micelle concentration). An analysis of these results based on the Poisson-Boltzmann equations leads to the conclusion that CTAB micelles and adsorbed bilayers are about 22(±4)% dissociated. The apparent agreement of bilayer and micellar ion binding parameters raises an important challenge for theories of double-layer interactions. In addition, the double-layer decay lengths observed in these micellar solutions appear to be due entirely to the dissociated bromide and free CTA+ ions, with no apparent contribution from charged micelles.
Language eng
DOI 10.1016/0021-9797(88)90156-7
Field of Research 029999 Physical Sciences not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1988, Academic Press
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