Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Ammanuel Mehreteab"'
Publikováno v:
Langmuir. 19:3589-3595
The structure and formation of particulate silica networks in biopolymer solutions were studied using rheological measurements and diffusing wave spectroscopy (DWS). For samples with different volume fractions of silica, the frequency-dependent visco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::457f12d5c8fc083f4d5159b63a0ecb5e
https://doi.org/10.1021/la026087e
https://doi.org/10.1021/la026087e
Publikováno v:
CIÊNCIAVITAE
Scopus-Elsevier
Scopus-Elsevier
Foams produced from surfactant solutions containing micelles of the anionic surfactant sodium polyoxyethylene-2 sulfate and counterions of different valence (aluminium, calcium or sodium) are investigated. For this purpose an experimental setup consi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50cc75b43d625d1f8996f85feb731256
https://doi.org/10.1007/s00396-002-0678-z
https://doi.org/10.1007/s00396-002-0678-z
Autor:
Peter A. Kralchevsky, Nikolay Dimov, Guy Broze, L.G. Lyutov, Vesselin Kolev, Ammanuel Mehreteab
Publikováno v:
Journal of Colloid and Interface Science. 256:23-32
A method for determining the equilibrium adsorption of an ionic surfactant on oppositely charged solid particles is proposed. Data from ζ -potential measurements are processed to obtain the adsorption constants of surfactant ions and counterions. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f699a282db2e5bdc27f9162a77449ae1
https://doi.org/10.1006/jcis.2001.7821
https://doi.org/10.1006/jcis.2001.7821
Autor:
Ammanuel Mehreteab, Slavka Tcholakova, Asen Hadjiiski, and G. Broze, Patrick Durbut, Nikolai D. Denkov
Publikováno v:
Langmuir. 17:7011-7021
In the preceding paper of this series we studied the effect of several oils of different chemical structure on the foaming properties of sodium dodecylbenzenesulfonate solutions. A straightforward correlation was found between the foam stability and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9443a1b5d6cb72badde6c45c85af8873
https://doi.org/10.1021/la010601j
https://doi.org/10.1021/la010601j
Autor:
Luben Nikolaev Arnaudov, Ammanuel Mehreteab, and G. Broze, Irena Surcheva, Nikolai D. Denkov, Patrick Durbut
Publikováno v:
Langmuir. 17:6999-7010
Foam tests and model experiments with sodium dodecylbenzenesulfonate solutions are performed to clarify how the foam stability and the foaminess are affected by several oils of different chemical structure. The foam tests show that 2-butyloctanol (2B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccbe778c21d183522827012a19df70fc
https://doi.org/10.1021/la010600r
https://doi.org/10.1021/la010600r
Publikováno v:
Langmuir. 16:8892-8902
Instability driven by diffusion flux across an asymmetric liquid film is theoretically investigated. To specify the system, we consider an oil−water-air film; the transported species are oil molecules. The latter are dissolved (solubilized) at the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a5a05b9fa8ebde36e90c1257d81e039
https://doi.org/10.1021/la0003185
https://doi.org/10.1021/la0003185
Autor:
Ammanuel Mehreteab, Guy Broze, E.H. Ahmed, Nikolay Dimov, Peter A. Kralchevsky, Rossitza G. Alargova, Patrick Durbut
Publikováno v:
Journal of Colloid and Interface Science. 224:116-125
The attachment of emulsion drops to glass substrates is investigated in relation to the redeposition of oil drops in the process of washing. It turns out that the drops of a surfactant-stabilized oil-in-water emulsion cannot be attached to an immerse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61b3c95dc1d09bf4fe508671b539b8e5
https://doi.org/10.1006/jcis.1999.6650
https://doi.org/10.1006/jcis.1999.6650
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 142:201-218
The experimental data for the growth of rod-like surfactant micelles in the presence of a 2:1 electrolyte (CaCl2) do not comply with the available theory, which was originally developed for a 1:1 electrolyte. To solve the problem we undertook experim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6404aa8b96963bdc01190033cc4a18ef
https://doi.org/10.1016/s0927-7757(98)00266-0
https://doi.org/10.1016/s0927-7757(98)00266-0
Publikováno v:
Journal of Colloid and Interface Science. 200:31-45
(SDS) is investigated. The ionic strength was kept constant, 0.024 The stability and the lifetime of foams are governed by the M, in all experiments. Sodium salts, Na2SO4, NaNO3 , NaCl, Na2CO3 ,N a 3PO4, and sodium citrate, as well as magnesium salts
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c083edace90c4eb8a368a07e8167c8d7
https://doi.org/10.1006/jcis.1997.5334
https://doi.org/10.1006/jcis.1997.5334
Autor:
Simeon D. Stoyanov, Vesselin N. Paunov, Guy Broze, Ivan B. Ivanov, and Ammanuel Mehreteab, Elka S. Basheva
Publikováno v:
Langmuir. 13:1400-1407
The motion of the front between thick and thin foam film formed in a vertical frame is studied both experimentally and theoretically. In the experiments we used sodium dodecyl sulfate solutions with added NaCl. The rate of motion of the front turns o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ede6c400c6b75a4d427a3d8074361132
https://doi.org/10.1021/la9608019
https://doi.org/10.1021/la9608019