1994
DOI: 10.1021/j100078a021
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Electrical Conductivity, Self-Diffusion, and Fluorescence Probe Investigations of the Interaction between Sodium Dodecyl Sulfate and Ethyl(hydroxyethyl)cellulose

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Cited by 91 publications
(97 citation statements)
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“…On the other hand, there is the breakdown of the three-dimensional structure of water and, consequently, weakness of the hydrophobic interactions [22] . The former effect is expected to decrease the critical surfactant concentration as observed for SDS in the presence of ethyl(hydroxyethyl) cellulose close to semi-dilute regime [20,21] whereas the latter effect increases the solubility of the solute, particularly the surfactant monomer as observed by the increase of the cmc [6,13] . Regarding less the small difference between the temperatures employed here (limited by the low cloud point of the sample) the data in the Table 1 indicate a trend toward the increase of C 1 with the temperature for all systems, most to CS and DC than SDS.…”
Section: Resultsmentioning
confidence: 94%
See 1 more Smart Citation
“…On the other hand, there is the breakdown of the three-dimensional structure of water and, consequently, weakness of the hydrophobic interactions [22] . The former effect is expected to decrease the critical surfactant concentration as observed for SDS in the presence of ethyl(hydroxyethyl) cellulose close to semi-dilute regime [20,21] whereas the latter effect increases the solubility of the solute, particularly the surfactant monomer as observed by the increase of the cmc [6,13] . Regarding less the small difference between the temperatures employed here (limited by the low cloud point of the sample) the data in the Table 1 indicate a trend toward the increase of C 1 with the temperature for all systems, most to CS and DC than SDS.…”
Section: Resultsmentioning
confidence: 94%
“…In terms of the surfactant monomer and the macromolecule (solutes) there is an effective reduction of the polarity making easier the interaction between the hydrophobic molecular regions [20,21] . On the other hand, there is the breakdown of the three-dimensional structure of water and, consequently, weakness of the hydrophobic interactions [22] .…”
Section: Resultsmentioning
confidence: 99%
“…Various aspects of the polymer-surfactants interactions have been reported by analyzing viscosity, [18 -22] electric conductivity, [19,23,24] and surface tension. [25,26] In the present work, a number of experiments have been conducted to characterize the interaction between different polymers [polyacrylamide (PAA), partially hydrolyzed polyacrylamide (PHPA), and xanthan gum] and anionic surfactants [SDS and sodium dodecylbenzene sulfonate (SDBS)] at various concentrations by measuring the conductivity and surface tension of the solution.…”
Section: Introductionmentioning
confidence: 99%
“…Quando a associação é entre moléculas forma em solução uma rede "mais rígida" que aumenta com o aumento da concentração de EHEC. Este último fato justifica o aumento da viscosidade em baixas concentrações de SDS; 19,21 (ii) adição de SDS -a interação inicia numa concentração de agregação crítica (cac), comprovada pelas alterações em propriedades já analisadas como diminuição da viscosidade, 1,19,[21][22][23] condutividade elétrica 2,6,19,23 e tensão superficial 9,24,25 . Acima da cac a tendência é dos agregados micelares no complexo estabelecerem-se nas regiões mais hidrofóbicas, com o aumento da concentração de EHEC.…”
Section: 21unclassified
“…[1][2][3][4][5][6][7][8] A associação é vista como sendo um fenômeno induzido pelo polímero e inicia em concentrações menores do que quando na sua ausência e o resultado é a formação de complexos termodinamicamente estáveis, com propriedades físico-químicas diferentes daquelas observadas em soluções micelares. [9][10][11][12][13] Alguns questionamentos são feitos com relação à natureza da estabilidade da interação entre o surfactante e o polímero.…”
Section: Introductionunclassified