Single Drop/Bubble Experiments to Study the Dynamics of Liquid Interfaces- From Bubble Pressure Tensiometry to Direct Drop/Bubble Interactions (Abstract/Comunicazione in atti di convegno)

Type
Label
  • Single Drop/Bubble Experiments to Study the Dynamics of Liquid Interfaces- From Bubble Pressure Tensiometry to Direct Drop/Bubble Interactions (Abstract/Comunicazione in atti di convegno) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Alternative label
  • A. Javad, N. Mucic, J.Y. Won, M. Karbaschi, B. Reetz, M. Born, J. Krägel, A.V. Makievski, N.M. Kovalchuk, V.I. Kovalchuk, G. Loglio, P. Pandolfini, Liggieri,F. Ravera, V.D. Mys, V.B. Fainerman and R. Miller (2012)
    Single Drop/Bubble Experiments to Study the Dynamics of Liquid Interfaces- From Bubble Pressure Tensiometry to Direct Drop/Bubble Interactions
    in 19th International Symposium on Surfactants in Solution (SIS2012), Edmonton, Alberta, Canada
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Javad, N. Mucic, J.Y. Won, M. Karbaschi, B. Reetz, M. Born, J. Krägel, A.V. Makievski, N.M. Kovalchuk, V.I. Kovalchuk, G. Loglio, P. Pandolfini, Liggieri,F. Ravera, V.D. Mys, V.B. Fainerman and R. Miller (literal)
Note
  • Comunicazione (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • MPI Colloids and Interfaces, Potsdam, Germany; 2 Sinterface Technologies, Berlin, Germany; Institute of Bio-Colloid Chemistry, Kiev, Ukraine; 4 University of Florence, Sesto Fiorentino,Italy; CNR - Istituto per la Energetica e le Interfasi, Genoa, Italy; Donetsk Medical University, Donetsk, Ukraine; 7 Sharif University, Teheran, Iran (literal)
Titolo
  • Single Drop/Bubble Experiments to Study the Dynamics of Liquid Interfaces- From Bubble Pressure Tensiometry to Direct Drop/Bubble Interactions (literal)
Abstract
  • The dynamics of liquid interfaces is of eminent importance for many modern technologies. The production and storage of foam and emulsion products is a prominent example where liquid interfaces are for example freshly formed and expanded (foaming, emulsification) or compressed (coalescence, Ostwald ripening). A quantitative knowledge of the dynamics of liquid interfacial layers provides an excellent starting point for tailoring formulations for the optimization of technologies. Various experimental techniques combined with quantitative theoretical models represent an efficient toolbox to meet the requirements in practice. The Maximum Bubble Pressure Tensiometry (MBPT), known for more than 150 years, has been developed mainly during the last 20 years as method for dynamic surface tensions of surfactant solutions and can be called now the World Champion in terms of shortest adsorption times. MBPT allows getting experimental data down to 100 ?s and in this way gives insight into the fast formation of adsorption layers especially for concentrated solutions. Beyond the CMC of a surfactant the experimental data even allow analyzing the mechanism of micelle formation and dissolution kinetics. Tensiometry methods based on the profile of drops and bubbles (PAT) are at present the work horses in all interfacial laboratories. Its triumphal march was founded mainly by the availability of electronic video cameras and frame grabbers, used via computers. While in the beginning, powerful workstations were needed to cope with the huge amount of data, nowadays even laptops equipped with a webcam are suitable for practicing this methodology. Fully automatic instruments exist on the market which give access to various types of investigations, not only of the adsorption of surfactants at a drop or bubble surfaces of fixed surface area. Computer controlled dosing systems provide additional protocols, such as generation of transient or harmonic perturbations, or even real time drop volume exchange to study the adsorption of different surface active compounds in a sequential way. (literal)
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