Colloid transport with wetting fronts: Interactive effects of solution surface tension and ionic strength

2010 ◽  
Vol 44 (4) ◽  
pp. 1270-1278 ◽  
Author(s):  
Jie Zhuang ◽  
Nadine Goeppert ◽  
Ching Tu ◽  
John McCarthy ◽  
Edmund Perfect ◽  
...  
Keyword(s):  
Surface Tension ◽  
Ionic Strength ◽  
Interactive Effects ◽  
Colloid Transport ◽  
Solution Surface

Increasing Storage Modulus, Contact Angle and Surface Tension of Airway Mucus Increases Clearance by Simulated Cough Through a Model Trachea

2010 ◽  
Author(s):  
Anpalaki J. Ragavan ◽  
Cahit A. Evrensel ◽  
Peter Krumpe
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Storage Modulus ◽  
Surface Properties ◽  
Respiratory Diseases ◽  
Interactive Effects ◽  
Altered Surface ◽  
Human Trachea ◽  
Tension Increase ◽  
And Storage

Altered surface and viscoelastic material properties of mucus during respiratory diseases have a strong influence on its clearance by cilia and cough. Combined effects of the surface properties (contact angle and surface tension) and storage modulus with relatively unchanged viscosity on displacement of the simulated mucus aliquot during simulated cough through a model adult human trachea is investigated. For the mucus simulants used in this study contact angle and surface tension increase significantly as storage modulus increase while viscosity remains practically unchanged. Displacement of mucus simulant aliquots increased significantly with increasing storage modulus (and contact angle) at a given cough velocity in the range between 5 meters/second (m/s) and 30 m/s with duration 0.3 s. Results suggest that the interactive effects of elasticity and surface properties may help facilitate mucus displacement at low cough velocities.

Wettability and floatability of galena—xanthate system as a function of solution surface tension

1986 ◽  
Vol 20 (1-2) ◽  
pp. 89-100 ◽  
Author(s):  
S. Kelebek ◽  
J.A. Finch ◽  
S. Yörük ◽  
G.W. Smith
Keyword(s):  
Surface Tension ◽  
Solution Surface

Critical solution surface tension for oil agglomeration

2005 ◽  
Vol 76 (1-2) ◽  
pp. 83-91 ◽  
Author(s):  
A. Ozkan ◽  
S. Aydogan ◽  
M. Yekeler
Keyword(s):  
Surface Tension ◽  
Solution Surface ◽  
Oil Agglomeration

scholarly journals Anomalous Behavior of Fluorocarbon-Hydrocarbon Hybrid Surfactant in its Aqueous Solution. Surface Tension and Micropolarity.

1996 ◽  
Vol 45 (5) ◽  
pp. 479-482 ◽  
Author(s):  
Atsushi ITO ◽  
Keiji KAMOGAWA ◽  
Hideki SAKAI ◽  
Yukishige KONDO ◽  
Norio YOSHINO ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Anomalous Behavior ◽  
Solution Surface ◽  
Hybrid Surfactant

scholarly journals Prediction of Aqueous Solution Surface Tension of Some Surfactant Mixtures and Composition of Their Monolayers at the Solution–Air Interface

2021 ◽  
Vol 5 (4) ◽  
pp. 53
Author(s):  
Bronisław Jańczuk ◽  
Anna Zdziennicka ◽  
Katarzyna Szymczyk ◽  
Maria Luisa González-Martín
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Aqueous Solutions ◽  
Ternary Mixtures ◽  
Mixture Component ◽  
Surfactant Mixtures ◽  
Surface Tension Reduction ◽  
Air Interface ◽  
Binary And Ternary Mixtures ◽  
Solution Surface

Measurements of the surface tension of the aqueous solution of SDDS mixture with fluorocarbon surfactants (FC) were carried out and considered in light of the surface tension of aqueous solutions of individual surfactants. Similar analyses were made for many other aqueous solutions of binary and ternary mixtures, taking into account the literature data of the surface tension of aqueous solutions of TX100, TX114, TX165, SDDS, SDS, CTAB, CPyB and FC. The possibility of predicting the surface tension of the aqueous solution of many surfactant mixtures from that of the mixture components using both the Szyszkowski, Fainerman and Miller and Joos concepts was analyzed. The surface tension of the aqueous solutions of surfactant mixtures was also considered based on the particular mixture component contribution to the water surface tension reduction. As a result, the composition of the mixed surface layer at the solution–air interface was discussed and compared to that which was determined using the Hua and Rosen concept. As follows from considerations, the surface tension of the aqueous solution of binary and ternary surfactant mixtures can be described and/or predicted.

The effect of solution surface tension on aroma compound release from aqueous xanthan solutions

2005 ◽  
Vol 21 (1) ◽  
pp. 8-12 ◽  
Author(s):  
Sébastien Secouard ◽  
Catherine Malhiac ◽  
Michel Grisel
Keyword(s):  
Surface Tension ◽  
Aroma Compound ◽  
Solution Surface

Surface properties of the bovine casein components: relationships between structure and foaming properties

1989 ◽  
Vol 56 (3) ◽  
pp. 495-502 ◽  
Author(s):  
Denis Lorient ◽  
Brigitte Closs ◽  
Jean Luc Courthaudon
Keyword(s):  
Surface Tension ◽  
Ionic Strength ◽  
Foam Stability ◽  
Covalent Binding ◽  
High Surface ◽  
Surface Hydrophobicity ◽  
Foaming Properties ◽  
Foam Formation ◽  
Foaming Capacity ◽  
Low Ionic Strength

SummaryIn order to optimize the use of caseins as surfactants, the surface tension, foaming capacity and stability were measured as a function of pH, ionic strength, protein concentration and polarity (modified by covalent binding of carbohydrates). We found that the caseins differ in their behaviour at the air/water interface with β-casein showing the greatest ability to decrease surface tension and to produce foams, due probably to its amphipathic structure. In experiments carried out at pH values close to pI, with low ionic strength and constant solubility (optimal conditions for foam formation), we observed a high surface hydrophobicity, a good accessibility and flexibility of peptidic side chains (evaluated by proteolysis), and a high foaming capacity parallelled by increased surface pressure. Foam stability of caseins was low compared to those of globular proteins such as β lactoglobulin.

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