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Author | dc.contributor.author | Sepu ́lveda, Luis | |
Author | dc.contributor.author | Gamboa, Consuelo | |
Admission date | dc.date.accessioned | 2018-12-20T14:08:21Z | |
Available date | dc.date.available | 2018-12-20T14:08:21Z | |
Publication date | dc.date.issued | 1987 | |
Cita de ítem | dc.identifier.citation | Journal of Colloid And Interface Science, Volumen 118, Issue 1, 2018, Pages 87-90 | |
Identifier | dc.identifier.issn | 00219797 | |
Identifier | dc.identifier.other | 10.1016/0021-9797(87)90437-1 | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/154197 | |
Abstract | dc.description.abstract | The effect of temperature on the viscosities of cetyltrimethylammonium salts (CTA X, X =Br-, NO3-, Tosylate) in the presence of added salts is presented. It was found that plots of 1n of relative viscosity vs 1/T was linear and the activation free energy (ΔG*) of the viscous flow was obtained from the slopes of such plots. The activation enthalpies (ΔH*) and entropies (ΔS*) for the viscous flow were also calculated and the entropic contribution was found to be negligible. The ΔG* are interpreted in terms of the energy required to create a hole or an activated transition micellar structure capable of being transformed into smaller micelles and finally into spherical micelles. The ΔG* and ΔH* values are highly dependent on the nature of the counterions. The more strongly bound counterions produce the greatest effect on the energy of the rod-to-sphere transition. © 1987 Academic Press, Inc. | |
Lenguage | dc.language.iso | en | |
Type of license | dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | |
Link to License | dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | |
Source | dc.source | Journal of Colloid And Interface Science | |
Keywords | dc.subject | Electronic, Optical and Magnetic Materials | |
Keywords | dc.subject | Biomaterials | |
Keywords | dc.subject | Surfaces, Coatings and Films | |
Keywords | dc.subject | Colloid and Surface Chemistry | |
Título | dc.title | Effect of temperature on the viscosity of cationic micellar solutions in the presence of added salts | |
Document type | dc.type | Artículo de revista | |
Cataloguer | uchile.catalogador | SCOPUS | |
Indexation | uchile.index | Artículo de publicación SCOPUS | |
uchile.cosecha | uchile.cosecha | SI | |
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