New methodology to determine the rate-limiting adsorption kinetics mechanism from experimental dynamic surface tension data

2006 ◽  
Vol 302 (1) ◽  
pp. 1-19 ◽  
Author(s):  
Srinivas Nageswaran Moorkanikkara ◽  
Daniel Blankschtein
Keyword(s):  
Surface Tension ◽  
Adsorption Kinetics ◽  
Dynamic Surface Tension ◽  
Surface Tension Data ◽  
Dynamic Surface ◽  
Rate Limiting

Role of electrostatic interactions in the adsorption kinetics of nanoparticles at fluid–fluid interfaces

2016 ◽  
Vol 18 (7) ◽  
pp. 5499-5508 ◽  
Author(s):  
Venkateshwar Rao Dugyala ◽  
Jyothi Sri Muthukuru ◽  
Ethayaraja Mani ◽  
Madivala G. Basavaraj
Keyword(s):  
Surface Tension ◽  
Adsorption Kinetics ◽  
Electrostatic Interaction ◽  
Electrostatic Interactions ◽  
Dynamic Surface Tension ◽  
Nano Particles ◽  
Fluid Interfaces ◽  
Dynamic Surface ◽  
Kinetics Of

The dynamic surface tension measurements are used to elucidate the contribution of electrostatic interaction energy barriers for the adsorption of nano-particles to the interfaces.

A Microfluidic Tensiometer

2004 ◽  
Author(s):  
Hans C. Mayer ◽  
Shelley L. Anna
Keyword(s):  
Surface Tension ◽  
Transport Mechanism ◽  
Microfluidic Devices ◽  
Dynamic Surface Tension ◽  
Two Phase ◽  
Surface Tension Data ◽  
Dynamic Surface ◽  
Theoretical Predictions ◽  
Surfactant Transport ◽  
Interface Curvature

Recent theoretical predictions indicate that a shift in surfactant transport mechanism from diffusion controlled to kinetically controlled occurs at highly curved interfaces where the length scale is on the same order as feature sizes in microfluidic devices. At present, experimental evidence of this shift in transport mechanism is lacking and this is due to the limitations on degree of interface curvature imposed by traditional methods of surface tension measurement. We show that the measurement of dynamic surface tension is possible at highly curved interfaces using a microfluidic tensiometer that utilizes glass micropipettes to control curvature dimension. Comparison of dynamic surface tension data from our microfluidic tensiometer with data obtained from traditional techniques will validate the theoretical arguments reported, and will improve understanding of two phase flows in microfluidic devices.

Analysis of dynamic surface tension data for SDS–DTAB mixed solutions

2004 ◽  
Vol 6 (7) ◽  
pp. 1592-1596 ◽  
Author(s):  
Ch. Frese ◽  
S. Ruppert ◽  
H. Schmidt-Lewerkühne ◽  
K. P. Wittern ◽  
R. Eggers ◽  
...  
Keyword(s):  
Surface Tension ◽  
Dynamic Surface Tension ◽  
Surface Tension Data ◽  
Dynamic Surface ◽  
Mixed Solutions
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