2001
DOI: 10.1016/s0378-3812(01)00467-8
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Surface tension of aqueous solutions of alkanolamines: single amines, blended amines and systems with nonionic surfactants

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Cited by 56 publications
(43 citation statements)
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“…The surface tension can affect the hydrodynamics of the column, and the thermal stability helps to set the feasible operating temperature range of the process. The refractive index can be used to identify the solvent and solute concentrations [12][13][14][15][16][17]. A literature review of physical properties of AHPD shows that the available open literature is scarce and limited in temperatures and compositions.…”
Section: Introductionmentioning
confidence: 99%
“…The surface tension can affect the hydrodynamics of the column, and the thermal stability helps to set the feasible operating temperature range of the process. The refractive index can be used to identify the solvent and solute concentrations [12][13][14][15][16][17]. A literature review of physical properties of AHPD shows that the available open literature is scarce and limited in temperatures and compositions.…”
Section: Introductionmentioning
confidence: 99%
“…The apparatus includes a light source, a computercontrolled dosing system, a video system mounted on an optical platform which shows live on the computer screen the pendant drop of the system under study so that the images are captured by the computer memory for analysis with a special software for fitting the Laplace-Young equation to the drop shape coordinates. The general experimental procedure has been described in previous work [26,27]. The commercial tensiometer includes a thermal cell with cuvette to carry out the experimental measurements, however, the cuvette has a capacity of 25 cm 3 which is too large; therefore it was necessary to design and construct a new thermal cell with a 1 cm 3 cuvette as shown in Fig.…”
Section: Interfacial Tensionmentioning
confidence: 99%
“…Es bien sabido que la mayoría de las mezclas que presenta el fenómeno conocido como mínima temperatura crítica de solución (Low critical Solution temperature LCST) incluyen agua en sus componentes [1,2] y tensoactivos no iónicos tales como 2 -butoxietanol como solutos [3]. Si bien se puede encontrar en la literatura una gran variedad de estudios para muchas propiedades físico-químicas y termodinámicas de soluciones acuosas de solutos tensioactivo no iónico, especialmente en relación con los coeficientes de actividad y superficie-solución de equilibrio [4,5,6,7,8], los valores que se encuentran en la literatura para las propiedades superficiales de las soluciones acuosas de este tipo de solutos no presentan buen acuerdo entre sí, quizás debido a la muy alta actividad superficial del C 16 E 20 en agua y a la sensibilidad de los métodos usados para la determinación de la tensión superficial; los valores de CMC en fracción molar para el C 16 E 20 en agua a temperatura ambiente oscilan entre x CM C = 5.1 × 10 −8 [9] y 1.4 × 10 −6 [10]. Asimismo, teniendo en cuenta la gran utilidad que el coeficiente de actividad a dilución infinita del soluto γ ∞ 2 en agua presenta para la ingeniería química, el conocimiento preciso de esta propiedad es de suma importancia en cualquier solución acuosa.…”
Section: Introductionunclassified