T
Theodor D. Gurkov
Researcher at Sofia University
Publications - 52
Citations - 1670
Theodor D. Gurkov is an academic researcher from Sofia University. The author has contributed to research in topics: Surface tension & Adsorption. The author has an hindex of 23, co-authored 50 publications receiving 1534 citations. Previous affiliations of Theodor D. Gurkov include Graz University of Technology & Kraft Foods.
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Journal ArticleDOI
Dilatational and Shear Elasticity of Gel-like Protein Layers on Air/Water Interface
TL;DR: In this article, the authors measured the surface shear elasticity modulus (μ) together with the dilatational modulus of gel-like protein layers on an air/water boundary.
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Ionic surfactants on fluid interfaces: determination of the adsorption; role of the salt and the type of the hydrophobic phase
Theodor D. Gurkov,Dora T. Dimitrova,Krastanka G. Marinova,Christine Bilke-Crause,Carsten Gerber,Ivan B. Ivanov +5 more
TL;DR: In this article, a simple thermodynamic method for determination of the adsorption (amount per unit area) of ionic surfactant is described, which is obtained from the interfacial tension isotherm measured in the presence of arbitrary (and fixed) concentration of inorganic electrolyte.
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Selection of surfactants for stable paraffin-in-water dispersions, undergoing solid-liquid transition of the dispersed particles.
TL;DR: The proposed procedure for evaluation of dispersion stability and some of the conclusions could be relevant to food emulsions, in which dispersed fat particles undergo solid-liquid-phase transition of similar type.
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Nanoemulsions obtained via bubble-bursting at a compound interface
Jie Feng,Matthieu Roché,Matthieu Roché,Daniele Vigolo,Daniele Vigolo,Luben Nikolaev Arnaudov,Simeon D. Stoyanov,Simeon D. Stoyanov,Simeon D. Stoyanov,Theodor D. Gurkov,Gichka G. Tsutsumanova,Howard A. Stone +11 more
TL;DR: In this article, the inverse transport process is reported: submicrometre-sized oil droplets, formed during bubble-bursting, are zipped across the interface to the liquid phase.
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Interfacial layers from the protein HFBII hydrophobin: Dynamic surface tension, dilatational elasticity and relaxation times
Nikola Alexandrov,Krastanka G. Marinova,Theodor D. Gurkov,Krassimir D. Danov,Peter A. Kralchevsky,Simeon D. Stoyanov,Theodorus Berend Jan Blijdenstein,Luben N. Arnaudov,Eddie G. Pelan,Alex Lips +9 more
TL;DR: The pendant-drop method and Langmuir trough are applied to investigate the characteristic relaxation times and elasticity of interfacial layers from the protein HFBII hydrophobin, which could be important for the understanding and control of dynamic processes in foams and emulsions stabilized by hydrophobins, as well as for the modification of solid surfaces by adsorption of such proteins.