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Department of Chemical and Pharmaceutical Engineering |
Research - Publications by Area:
Foams, Antifoams and Detergency
2023
1. Role of Particle Size on The Cohesive Strength of Non-Sintered (green) Ceramics. M. Hristova, I. Lesov, L. Mihaylov, N. Denkov, S. Tcholakova, Colloids Surf. A 658 (2023) 130653. doi: 10.1016/j.colsurfa.2022.130653
2022
1. Oil soluble surfactants as efficient foam stabilizers. F. Mustan, N. Politova-Brinkova, D. Rossetti, P. Rayment, S. Tcholakova, Colloids Surf. A 633 (2021) 27874; doi: 10.1016/j.colsurfa.2021.127874
2. Interplay between bulk aggregates, surface properties and foam stability of nonionic surfactants.. F. Mustan, N. Politova-Brinkova, Z. Vinarov, D. Rossetti, P. Rayment, S. Tcholakova, Adv. Colloid Interface Sci. 302 (2022) 102618; doi: 10.1016/j.cis.2022.102618
3. Foamability and Foam Stability of Oily Mixtures. T. Arnaudova, Z. Mitrinova, N. Denkov, D. Growney, R. Brenda, S. Tcholakova, Colloids Surf. A 653 (2022) 129987; 10.1016/j.colsurfa.2022.129987
2021
1. Role of Surfactant Adsorption and Surface Properties for The Efficiency of PDMS-Silica Antifoams, N. Politova-Brinkova, M. Hristova, V. Georgiev, S. Tcholakova, N. Denkov, M. Grandl, F. Achenbach, Colloids Surf. A 610 (2021) 125747; doi: 10.1016/j.colsurfa.2020.125747
2. WIPO Patent: Oil-in-Water Emulsion of Nano-Sized Self-Emulsified Particulates, N. Denkov, S. Tcholakova, D. Glushkova, D. Cholakova, S. Smoukov, Patent Number: WO 2020/260577A1/ 30.12.2020
3. Foamability of Surfactant Solutions: Interplay Between Adsorption and Hydrodynamic Conditions, B. Petkova, S. Tcholakova, N. Denkov, Colloids Surf. A 626 (2021) 127009; doi: 10.1016/j.colsurfa.2021.127009
2020
1. Foamability of Aqueous Solutions: Role of Surfactant Type and Concentration. B. Petkova, S. Tcholakova, M. Chenkova, K. Golemanov, N. Denkov, D. Thorley, S. Stoyanov, Adv. Colloid Interface Sci. 276 (2020) 102084; doi: 10.1016/j.cis.2019.102084
2. WIPO Patent: Oral care composition used for whitening teeth, comprises nonionic surfactant comprising one or more carbon-carbon double bond, pigment and carrier, and does not comprise anionic surfactants, amphoteric surfactants and polymers. S.E. Anachkov, H. Jin, P.A. Kralchevsky; Y. Li; Patent Number: WO2020035269-A1, 20.02.2020.
3. Vortex in Liquid Films from Concentrated Surfactant Solutions Containing Micelles and Colloidal Particles. E.S. Basheva, P.A. Kralchevsky, K.D. Danov, R.D. Stanimirova, N. Shaw, J.T. Petkov, J. Colloid Interface Sci. 576 (2020) 345−355; doi: 10.1016/j.jcis.2020.05.048
4. US Patent App. 16/652,725: A Conditioning Shampoo Composition. P.A. Kralchevsky, R.D. Stanimirova, J.T. Petkov, H. Xu, US 2020/0237634 A1, 30.07.2020.
5. Physicochemical Control of Foam Properties. N. Denkov, S. Tcholakova, N. Politova-Brinkova, Curr. Opin. Colloid Interface Sci. 50 (2020) 101376; doi: 10.1016/j.cocis.2020.08.001
2019
1. Properties of the Micelles of Sulfonated Methyl Esters Determined from the Stepwise Thinning of Foam Films and by Rheological Measurements. E.S. Basheva, K.D. Danov, G.M. Radulova, P.A. Kralchevsky, H. Xu, Y.W. Ung, J.T. Petkov, J. Colloid Interface Sci. 538 (2019) 660−670; doi: 10.1016/j.jcis.2018.12.034
2. Structure of Dense Adsorption Layers of Escin at the Air−Water Interface Studied by Molecular Dynamics Simulations. S. Tsibranska, A. Ivanova, S. Tcholakova, N. Denkov, Langmuir 35 (2019); doi: 10.1021/acs.langmuir.9b02260
3. Surface Phase Transitions in Foams and Emulsions. N. Denkov, S. Tcholakova, D. Cholakova, Curr. Opin. Colloid Interface Sci. 44 (2019) 32–42; doi: 10.1016/j.cocis.2019.09.005
2018
1. Control of Surfactant Solution Rheology Using Medium-Chain Cosurfactants. Z. Mitrinova, S. Tcholakova, N. Denkov. Colloids Surf. A, 537 (2018) 173–184; doi: 10.1016/j.colsurfa.2017.10.018
2. Self-regulation of Foam Volume and Bubble Size during Foaming via Shear Mixinge. N. Politova, S. Tcholakova, Zh. Valkova, K. Golemanov, N. D. Denkov. Colloids Surf. A, 539 (2018) 18–28; doi: 10.1016/j.colsurfa.2017.12.006
3. Viscosity Peak due to Shape Transition from Wormlike to Disklike Micelles: Effect of Dodecanoic Acid. S.E. Anachkov, G.S. Georgieva, L. Abezgauz, D. Danino, P.A. Kralchevsky. Langmuir 34 (2018) 4897–4907; doi: 10.1021/acs.langmuir.8b00421
4. Growth of Wormlike Micelles in Nonionic Surfactant Solutions: Quantitative Theory vs. Experiment. K.D. Danov, P.A. Kralchevsky, S.D. Stoyanov, J.L. Cook, I.P. Stott, E.G. Pelan. Adv. Colloid Interface Sci. 256 (2018) 1–22; doi: 10.1016/j.cis.2018.05.006
5. From Pickering Foams to Porous Carbonate Materials: Crack-free Structuring in Drying Ceramics. M. Hristova, I. Lesov, S. Tcholakova, V. Goletto, N. Denkov. Colloids Surf. A 552 (2018) 142–152; doi: 10.1016/j.colsurfa.2018.05.025
2017
1. Production and Characterization of Stable Foams with Fine Bubbles from Solutions of Hydrophobin HFBII and Its Mixtures with Other Proteins. L.M. Dimitrova, P.V. Petkov, P.A. Kralchevsky, S.D. Stoyanov, E.G. Pelan. Colloids Surf. A, 521 (2017) 92–104; doi: 10.1016/j.colsurfa.2016.06.018
2. New Surfactant Mixtures for Fine Foams with Slowed Drainage. K. G. Marinova, K. T. Naydenova, E. S. Basheva, F. Bauer, J. Tropsch, J. Franke. Colloids Surf. A, 523 (2017) 54–61; doi: 10.1016/j.colsurfa.2017.03.050
3. Role of Pickering Stabilization and Bulk Gelation for the Preparation and Properties of Solid Silica Foams. I. Lesov, S. Tcholakova, M. Kovadjieva, T. Saison, M. Lamblet, N. Denkov. J. Colloid Interface Sci. 504 (2017) 48–57; doi:10.1016/j.jcis.2017.05.036
4. Role of Surface Properties for the Kinetics of Bubble Ostwald Ripening in Saponin-stabilized Foams. S. Tcholakova, F. Mustan, N. Pagureva, K. Golemanov, N. D. Denkov, E. G. Pelan, S. D. Stoyanov. Colloids and Surfaces A 534 (2017) 16–25; doi: 10.1016/j.colsurfa.2017.04.055
2016
1. Role of Interactions between Cationic Polymers and Surfactants for Foam Properties. Z. Mitrinova, S. Tcholakova, N. Denkov, K. P. Ananth. Colloids Surf. A 489 (2016) 378–391.
2. Surface Properties of Adsorption Layers Formed from Triterpenoid and Steroid Saponins. N. Pagureva, S. Tcholakova, K. Golemanov, N. Denkov, E. Pelan, S. D. Stoyanov. Colloids and Surfaces A: Physicochem. Eng. Aspects 491 (2016) 18–28.
3. Effect of Ionic Correlations on the Surface Forces in Thin Liquid Films: Influence of Multivalent Coions and Extended Theory. K.D. Danov, E.S. Basheva, P.A. Kralchevsky. Materials 9 (2016) 145; doi:10.3390/ma9030145.
4. Soft Electrostatic Repulsion in Particle Monolayers at Liquid Interfaces: Surface Pressure and Effect of Aggregation. P.A. Kralchevsky, K.D. Danov, P.V. Petkov. Phil. Trans. R. Soc. A 374 (2016) Article Number: 20150130; doi:10.1098/rsta.2015.0130
5. Adhesion of Bubbles and Drops to Solid Surfaces, and Anisotropic Surface Tensions Studied by Capillary Meniscus Dynamometry. K.D. Danov, R.D. Stanimirova, P.A. Kralchevsky, K.G. Marinova, S.D. Stoyanov, T.B.J. Blijdenstein, A.R. Cox, E.G. Pelan. Adv. Colloid Interface Sci. 233 (2016) 223–239. doi: 10.1016/j.cis.2015.06.003.
6. Control of Drop Shape Transformations in Cooled Emulsions. D. Cholakova, N. Denkov, S. Tcholakova, I. Lesov, S. K. Smoukov. Adv. Colloid Interface Sci. 235 (2016) 90–107.
7. Factors Affecting the Coalescence Stability of Microbubbles. N. Pagureva, S. Tcholakova, K. Rusanova, N. Denkov, T. Dimitrova. Colloids Surf. A 508 (2016) 21–26.
8. Sulphonated Methyl Ester a Promising Surfactant for Detergency in Hard Water Conditions. Y.S. Lim, R.D. Stanimirova, H. Xu, J. Petkov. Household and Personal Care Today 11(4) July/August 2016, 47–51; ISSN 2035-4614.
9. Synergistic Growth of Giant Wormlike Micelles in Ternary Mixed Surfactant Solutions: Effect of Octanoic Acid. G.S. Georgieva, S.E. Anachkov, I. Lieberwirth, K. Koynov, P.A. Kralchevsky, Langmuir 32 (2016) 12885–12893; doi: 10.1021/acs.langmuir.6b03955
2015
1. Solubility Limits and Phase Diagrams for Fatty Alcohols in Anionic (SLES) and Zwitterionic (CAPB) Micellar Surfactant Solutions. S.S. Tzocheva, K.D. Danov, P.A. Kralchevsky, G.S. Georgieva, A.J. Post, K.P. Ananthapadmanabhan. J. Colloid Interface Sci. 449 (2015) 46–61.
2. Chemical Physics of Colloid Systems and Interfaces. P.A. Kralchevsky, K.D. Danov, in Handbook of Surface and Colloid Chemistry, Fourth Updated Edition; K. S. Birdi, Ed.; CRC Press, Boca Raton, 2015; Chapter 4, p. 247.
3. Shear Rheology of Mixed Protein Adsorption Layers vs Their Structure Studied by Surface Force Measurements. K.D. Danov, P.A. Kralchevsky, G.M. Radulova, E.S. Basheva, S.D. Stoyanov, E.G. Pelan. Adv. Colloid Interface Sci. 222 (2015) 148–161.
4. Self-Shaping of Oil Droplets via the Formation of Intermediate Rotator Phases upon Cooling. N. Denkov, S. Tcholakova, I. Lesov, D. Cholakova, S. K. Smoukov. Nature 528 (2015) 392–395.
2014
1. Drying of particle-loaded foams for production of porous materials: mechanism and theoretical modeling. I. Lesov, S. Tcholakova, N. Denkov. RSC Adv. 4 (2014) 811-823.
2. Mechanistic Understanding of the Modes of Action of Foam Control Agents. N.D. Denkov, K.G. Marinova, S.S. Tcholakova. Adv. Colloid Interface Sci. 206 (2014) 57-67.
3. Surface Pressure Isotherm for a Monolayer of Charged Colloidal Particles at a Water/Nonpolar-Fluid Interface: Experiment and Theoretical Model. P.V. Petkov, K.D. Danov, P.A. Kralchevsky. Langmuir 30 (2014) 2768-2778.
4. Factors Controlling the Formation and Stability of Foams Used as Precursors of Porous Materials. I. Lesov, S. Tcholakova, N. Denkov. J. Colloid Interface Sci. 426 (2014) 9-21.
5. Competitive Adsorption of the Protein Hydrophobin and an Ionic Surfactant: Parallel vs Sequential Adsorption and Dilatational Rheology. R.D. Stanimirova, K.G. Marinova, K.D. Danov, P.A. Kralchevsky, E.S. Basheva, S.D. Stoyanov, E.G. Pelan. Colloids Surf. A 457 (2014) 307−317.
2013
1. Surface and Foam Properties of SLES + CAPB + Fatty Acid Mixtures: Effect of pH for C12–C16 Acids. Z. Mitrinova, S. Tcholakova, K. Golemanov, N. Denkov, M. Vethamuthu, K.P. Ananthapadmanabhan, Colloids and Surfaces A: Physicochem. Eng. Aspects 438 (2013) 186-198.
2. WIPO Patent "High-Performance Thermal Insulation Materials". A. Dekoninck, N. Denkov, I. Lesov, S. Tcholakova, K. Golemanov, WO 2013/007958 A1.
3. Remarkably High Surface Visco-Elasticity of Adsorption Layers of Triterpenoid Saponins. K. Golemanov, S. Tcholakova, N. Denkov, E. Pelan, S. D. Stoyanov, Soft Matter, 2013, 9, 5738.
4. Surface Pressure and Elasticity of Hydrophobin HFBII Layers on the Air-Water Interface: Rheology vs. Structure Detected by AFM Imaging. R.D. Stanimirova, T.D. Gurkov, P.A. Kralchevsky, K.T. Balashev, S.D. Stoyanov, E.G. Pelan. Langmuir 29 (2013) 6053-6067.
5. Efficient Control of the Rheological and Surface Properties of Surfactant Solutions Containing C8−C18 Fatty Acids as Cosurfactants. Z. Mitrinova, S. Tcholakova, J. Popova, N. Denkov, B. Dasgupta, K.P. Ananthapadmanabhan, Langmuir 29 (2013) 8255-8265.
6. Interfacial Rheology of Viscoelastic Surfactant-Polymer Layers. T.D. Gurkov, B. Nenova, E.K. Kostova, W. Gaschler. In Colloid and Interface Chemistry for Nanotechnology (P.A. Kralchevsky, R. Miller and F. Ravera, Eds.). Taylor & Francis, New York, 2013; pp. 351-367.
7. Co-Adsorption of the Proteins b-Casein and BSA in Relation to the Stability of Thin Liquid Films and Foams. K.G. Marinova, R.D. Stanimirova, M.T. Georgiev, N.A. Alexandrov, E.S. Basheva, P.A. Kralchevsky. In Colloid and Interface Chemistry for Nanotechnology (P.A. Kralchevsky, R. Miller and F. Ravera, Eds.). Taylor & Francis, New York, 2013; pp. 439-458.
8. Ice cream: A delicious mix of crystals, droplets and bubbles. Z. Vinarov, BBC Knowledge (Bulgaria), 43 (2013) 28-33. [in Bulgarian, popular science]
2012
1. Effect of Cationic Polymers on Foam Rheological Properties. N. Politova , S. Tcholakova , K. Golemanov, N.D. Denkov, M. Vethamuthu, K.P. Ananthapadmanabhan, Langmuir 28 (2012) 1115-1126.
2. Solubility Limits and Phase Diagrams for Fatty Acids in Anionic (SLES) and Zwitterionic (CAPB) Micellar Surfactant Solutions. S.S. Tzocheva, P.A. Kralchevsky, K.D. Danov, G.S. Georgieva, A.J. Post, K.P. Ananthapadmanabhan, J. Colloid Interface Sci. 369 (2012) 274-286.
3. Surface Shear Rheology of Adsorption Layers from the Protein HFBII Hydrophobin: Effect of Added β-Casein. G.M. Radulova, K.Golemanov, K.D. Danov, P.A. Kralchevsky, S.D. Stoyanov, L.N. Arnaudov, T.B.J. Blijdenstein, E.G. Pelan, A.Lips, Langmuir 28 (2012) 4168-4177.
4. Foaming and Foam Stability for Mixed Polymer−Surfactant Solutions: Effects of Surfactant Type and Polymer Charge. R. Petkova, S. Tcholakova, N. Denkov, Langmuir 28 (2012) 4996−5009.
5. Foam Rheology. N. D. Denkov, S. Tcholakova, R. Hoehler, S. Cohen-Addad, Chapter 6 in Foam Engineering: Fundamentals and Applications (1st Edition; P. Stevenson, Ed.), John Wiley & Sons, Chichester, UK, 2012.
6. Interfacial Layers from the Protein HFBII Hydrophobin: Dynamic Surface Tension, Dilatational Elasticity and Relaxation Times. N.A. Alexandrov, K.G. Marinova, T.D. Gurkov, K.D. Danov, P.A. Kralchevsky, S.D. Stoyanov, T.B.J. Blijdenstein, L.N. Arnaudov, E.G. Pelan, A. Lips, J. Colloid Interface Sci. 376 (2012) 296-306.
7. Impact of the Surfactant Structure on the Foaming/Defoaming Performance of Nonionic Block Copolymers in Na Caseinate Solutions. K.G. Marinova, L.M. Dimitrova, R.Y. Marinov, N.D. Denkov, A. Kingma, Bulg. J. Phys. 39 (2012) 53-64.
8. Surface Shear Rheology of Saponin Adsorption Layers. K. Golemanov, S. Tcholakova, N. Denkov, E. Pelan, S. Stoyanov, Langmuir 28 (2012) 12071-12084.
9. Determination of the Aggregation Number and Charge of Ionic Surfactant Micelles from the Stepwise Thinning of Foam Films. S.E. Anachkov, K.D. Danov, E.S. Basheva, P.A. Kralchevsky, K.P. Ananthapadmanabhan, Adv. Colloid Interface Sci. 183-184 (2012) 55-67.
10. Surface Shear Rheology of Hydrophobin Adsorption Layers: Laws of Viscoelastic Behaviour with Applications to Long-Term Foam Stability. K.D. Danov, G.M. Radulova, P.A. Kralchevsky, K. Golemanov, S.D. Stoyanov, Faraday Discussions. 158 (2012) 195-221.
2011
1. Unique Properties of Bubbles and Foam Films Stabilized by HFBII Hydrophobin. E.S. Basheva, P.A. Kralchevsky, N.C. Christov, K.D. Danov, S.D. Stoyanov, T.B.J. Blijdenstein, H.-J. Kim, E.G. Pelan, A. Lips, Langmuir 27 (2011) 2382-2392.
2. Self-Assembled Bilayers from HFBII Hydrophobin: Nature of the Adhesion Energy. E.S. Basheva, P.A. Kralchevsky, K.D. Danov, S.D. Stoyanov, T.B.J. Blijdenstein, E.G. Pelan, A. Lips, Langmuir 27 (2011) 4481-4488.
3. Collection of Papers from the 8th EUFOAM Conference and the Meetings of COST Actions D43 and P21, Borovets, Bulgaria, 13-16 July 2010. N.D. Denkov, P.A. Kralchevsky, Colloids and Surfaces A, 382 (2011) 1-2.
4. Statistics of Rupture in Relation to the Stability of Thin Liquid Films with Different Size. T.D. Gurkov, J.K. Angarska, K.D. Tachev, W. Gaschler, Colloids and Surfaces A, 382 (2011) 174-180.
5. The Metastable States of Foam Films Containing Electrically Charged Micelles or Particles: Experiment and Quantitative Interpretation. K.D. Danov, E.S. Basheva, P.A. Kralchevsky, K.P. Ananthapadmanabhan, A. Lips, Advances in Colloid and Interface Science 168 (2011) 50-70.
6. Surface Rheology of Saponin Adsorption Layers. R. Stanimirova, K. Marinova, S. Tcholakova, N.D. Denkov, S. Stoyanov, E. Pelan, Langmuir 27 (2011) 12486-12498.
7. Hydration Force Due to the Reduced Screening of the Electrostatic Repulsion in Few-Nanometer-Thick Films. P.A. Kralchevsky, K.D. Danov, E.S. Basheva, Current Opinion in Colloid & Interface Sci. 16 (2011) 517-524.
8. Adsorption Kinetics under the Influence of Barriers at the Subsurface Layer. T.D. Gurkov, Colloid Polym. Sci. 289 (2011) 1905-1915.
9. Control of Ostwald Ripening by Using Surfactants with High Surface Modulus. S. Tcholakova, Z. Mitrinova, K. Golemanov, N. Denkov, M. Vethamuthu, K. P. Ananthapadmanabhan, Langmuir 27 (2011) 14807-14819.
2010
1. Coexistence of Micelles and Crystallites in Solutions of Potassium Myristate: Soft Matter vs. Solid Matter. M. P. Boneva, K. D. Danov, P. A. Kralchevsky, S. D. Kralchevska, K. P. Ananthapadmanabhan, A. Lips, Colloids Surf. A 354 (2010) 172-187.
2. Antibubble Lifetime: Influence of the Bulk Viscosity and of the Surface Modulus of the Mixture. S. Dorbolo, D. Terwagne, R. Delhalle, J. Dujardin, N. Huet, N. Vandewalle, N. Denkov, Colloids Surf. A 365 (2010) 43-45.
2009
1. Modified Capillary Cell for Foam Film Studies Allowing Exchange of the Film-Forming Liquid. P.A. Wierenga, E.S. Basheva, N.D. Denkov, Langmuir 25 (2009) 6035-6039.
2. Effect of Disjoining Pressure on the Drainage and Relaxation Dynamics of Liquid Films with Mobile Interfaces. S. S. Tabakova, K. D. Danov, J. Colloid Interface Sci. 336 (2009) 273-284.
3. Reconsidering the Importance of Interfacial Properties in Foam Stability. P. A.Wierenga, L. van Norél, E. S. Basheva, Colloids and Surfaces A: Physicochem. Eng. Aspects 344 (2009) 72-78.
4. Physico-chemical Factors Controlling the Foamability and Foam Stability of Milk Proteins: Sodium Caseinate and Whey Protein Concentrates. K. G. Marinova, E. S. Basheva, B. Nenova, M. Temelska, A. Y. Mirarefi, B. Campbell, I. B. Ivanov, Food Hydrocolloids 23 (2009) 1864-1876.
5. The Role of Surfactant Type and Bubble Surface Mobility in Foam Rheology. N. D. Denkov, S. Tcholakova, K. Golemanov, K. P. Ananthpadmanabhan, A. Lips, Soft Matter 5 (2009) 3389-3408.
6. Jamming in Sheared Foams and Emulsions, Explained by Critical Instability of the Films between Neighboring Bubbles and Drops. N. D. Denkov, S. Tcholakova, K. Golemanov, A. Lips, Phys. Rev. Lett. 103 (2009) 118302.
2008
1. Reply to Comment on "Hydrophobic Forces in the Foam Films Stabilized by Sodium Dodecyl Sulfate: Effect of Electrolyte" and Subsequent Criticism. P. A. Kralchevsky, K. D. Danov, and J. K. Angarska, Langmuir 24 (2008) 2953-2953.
2. Viscous Friction in Foams and Concentrated Emulsions under Steady Shear. N. D. Denkov, S. Tcholakova, K. Golemanov, K. P. Ananthapadmanabhan, and A. Lips, Phys. Rev. Lett. 100 (2008) 138301.
3. Theoretical Model of Viscous Friction inside Steadily Sheared Foams and Concentrated Emulsions. S. Tcholakova, N.D. Denkov, K. Golemanov, K.P. Ananthapadmanabhan, A. Lips, Phys. Rev. E 78 (2008) 011405.
4. Surfactant Mixtures for Control of Bubble Surface Mobility in Foam Studies. K. Golemanov, N. D. Denkov, S. Tcholakova, M. Vethamuthu, and A. Lips, Langmuir 24 (2008) 9956–9961.
5. Method for Analysis of the Composition of Acid Soaps by Electrolytic Conductivity Measurements. P. A. Kralchevsky, M. P. Boneva, K. D. Danov, K. P. Ananthapadmanabhan, and A. Lips, J. Colloid Interface Sci. 327 (2008) 169-179.
6. Instrument and Methods for Surface Dilatational Rheology Measurements. S. C. Russev, N. Alexandrov, K. G. Marinova, K. D. Danov, N. D. Denkov, L. Lyutov, V. Vulchev, and C. Bilke-Krause, Review of Scientific Instruments 79 (2008) 104102.
7. Chemical Physics of Colloid Systems and Interfaces. P. A. Kralchevsky, K. D. Danov and N. D. Denkov, Chapter 7 in Handbook of Surface and Colloid Chemistry (3rd Updated Edition; K. S. Birdi, Ed.). CRC Press, Boca Raton, FL, 2008.
8. Breakup of Bubbles and Drops in Steadily Sheared Foams and Concentrated Emulsions. K. Golemanov, S. Tcholakova, N. D. Denkov, K. P. Ananthapadmanabhan and A. Lips, Physical Review E 78 (2008) 051405.
9. Theoretical model of viscous friction inside steadily sheared foams and concentrated emulsions. N. D. Denkov, S. Tcholakova, K. Golemanov, T. Hu, and A. Lips, Amer. Inst. Physics Conference Proceedings, 2008, 1027, 902-904 .
2007
1. Effect of the Precipitation of Acid-Soap and Alkanoic-Acid Crystallites on the Bulk pH and Surface Tension of Soap Solutions. P. A. Kralchevsky, K. D. Danov, S. D. Kralchevska, C. I. Pishmanova, N. C. Christov, K. P. Ananthapadmanabhan, and A. Lips, Langmuir 23 (2007) 3538-3553.
2. The Colloid Structural Forces as a Tool for Particle Characterization and Control of Dispersion Stability, E. S. Basheva, P. A. Kralchevsky, K. D. Danov, K. P. Ananthapadmanabhan, and A. Lips, Physical Chemistry Chemical Physics 9 (2007) 5183-5198.
2006
1. Ivan B. Ivanov: Remarkable Figure in Colloid Science. P. A. Kralchevsky, and N. D. Denkov, Colloids Surf. A, 282-283 (2006) 1-7.
2. Foam-Wall Friction: Effect of Air Volume Fraction for Tangentially Immobile Bubble Surface. N. D. Denkov, S. Tcholakova, K. Golemanov, V. Subramanian, and A. Lips, Colloids Surf. A, 282-283 (2006) 329-347.
3. Interpretation of Surface-Tension Isotherms of n-Alkanoic (Fatty) Acids by Means of the van der Waals Model. K.D. Danov, P.A. Kralchevsky, K.P. Ananthapadmanabhan, A. Lips, J. Colloid Interface Sci. 300 (2006) 809-813.
4. Antifoam Effects of Solid Particles, Oil Drops and Oil-Solid Compounds in Aqueous Foams. N.D. Denkov, K.G. Marinova, Chapter 10 in the book "Colloidal Particles at Liquid Interfaces" (B.P. Binks & T.S. Horozov, Eds.), Cambridge University Press, Cambridge, UK, 2006; pp. 383-444.
5. Disjoining Pressuire of Thin Films Stabilized by Nonionic Surfactants, K. D. Danov, I. B. Ivanov, K. P. Ananthapadmanabhan, A. Lips, Advances in Colloid & Interface Science 128-130 (2006) 185-215.
2005
1. Detachment of Oil Drops from Solid Surfaces in Surfactant Solutions: Molecular Mechanisms at a Moving Contact Line, P.A. Kralchevsky, K.D. Danov, V.L. Kolev, T.D. Gurkov, M.I. Temelska, and G. Brenn, Industrial & Engineering Chemistry Research 44 (2005) 1309-1321.
2. Interfacial Rheology of Adsorbed Layers with Surface Reaction: On the Origin of the Dilatational Surface Viscosity, I.B. Ivanov, K.D. Danov, K.P. Ananthapadmanabhan, and A. Lips, Advances in Colloid & Interface Sci. 114-115 (2005) 61-92.
3. Wall Slip and Viscous Dissipation in Sheared Foams: Effect of Surface Mobility, N. D. Denkov, V. Subramanian, D. Gurovich and A. Lips, Colloids and Surfaces A 263(1-3) (2005) 129-145.
4. Hydrophobization of Glass Surface by Adsorption of Polydimethylsiloxane (PDMS), K. G. Marinova, D. Christova, S. Tcholakova, E. Efremov, N. D. Denkov, Langmuir 21 (2005) 11729-11737.
2004
1. Detection of the Hydrophobic Surface Force in Foam Films by Measurements of the Critical Thickness of Film Rupture. J. K. Angarska, B. S. Dimitrova, K. D. Danov, P. A. Kralchevsky, K. P. Ananthapadmanabhan, A. Lips, Langmuir 20 (2004) 1799-1806.
2. Mixed Solutions of Anionic and Zwitterionic Surfactant (Betaine): Surface Tension Isotherms, Adsorption and Relaxation Kinetics. K. D. Danov, S. D. Kralchevska, P. A. Kralchevsky, K. P. Ananthapadmanabhan, and A. Lips, Langmuir 20 (2004) 5445-5453.
3. Electrodipping Force Acting on Solid Particles at a Fluid Interface. K .D. Danov, P. A. Kralchevsky, M. P. Boneva, Langmuir 20 (2004) 6139-6151.
4. Mechanisms of Foam Destruction by Oil-based Antifoams. N. D. Denkov Langmuir 20 (2004) 9463-9505
2003
1. Spontaneous Detachment of Oil Drops from Solid Substrates: Governing Factors. V. L. Kolev, I. I. Kochijashky, K. D. Danov, P. A. Kralchevsky, G. Broze and A. Mehreteab, J. Colloid Interface Sci. 257 (2003) 357-363.
2. Model Studies on the Mechanism of Deactivation (Exhaustion) of Mixed Oil-Silica Antifoams. K.G. Marinova, S. Tcholakova, N. D. Denkov, S. Roussev, and M. Deruelle, Langmuir 19 (2003) 3084-3089.
2002
1. Kinetics of Triglyceride Solubilization by Micellar Solutions of Nonionic Surfactant and Triblock Copolymer: 2. Theoretical Model. P. A. Kralchevsky, N. D. Denkov, P. D. Todorov, G. S. Marinov, G. Broze, and A. Mehreteab, Langmuir 18 (2002) 7887-7895.
2. Kinetics of Triglyceride Solubilization by Micellar Solutions of Nonionic Surfactant and Triblock Copolymer: 3. Experiments with Single Drops. P. D. Todorov, G. S. Marinov, P. A. Kralchevsky, N. D. Denkov, P. Durbut, G. Broze, and A. Mehreteab, Langmuir 18 (2002) 7896-7905.
3. Optimal Hydrophobicity of Silica in Mixed Oil-Silica Antifoams. K.G. Marinova, N.D. Denkov, P. Branlard, Y. Giraud, M. Deruelle, Langmuir 18 (2002) 3399-3403.
4. Role of Oil Spreading for the Efficiency of Mixed Oil-Solid Antifoams. N.D. Denkov, S. Tcholakova, K.G. Marinova, A. Hadjiiski, Langmuir 18 (2002) 5810-5817.
5. Model Studies of the Effect of Silica Hydrophobicity on the Efficiency of Mixed Oil-Silica Antifoams. N.D. Denkov, K.G. Marinova, S. Tcholakova, M. Deruelle, Langmuir 18 (2002) 8761-8769.
6. Role of Entry Barriers in Foam Destruction by Oil Drops. A. Hadjiiski, N. D. Denkov, S. Tcholakova, I. B. Ivanov, In: "Adsorption and Aggregation of Surfactants in Solution", K. L. Mittal and D. O. Shah (Eds.), Marcel Dekker, New York, 2002, pp. 465-500.
7. Mechanism of Foam Destruction by Emulsions of PDMS-silica Mixtures. N. D. Denkov, K. Marinova, S. Tcholakova, M. Deruelle, Proceedings of Third World Congress on Emulsions, September, 2002, Lyon, France.
8. Chemical Physics of Colloid Systems and Interfaces: 7. Mechanisms of Antifoaming; 8. Electrokinetic Phenomena in Colloids; 9. Optical Properties of Dispersions and Micellar Solutions. P. A. Kralchevsky, K. D. Danov and N. D. Denkov, Chapter 5 in "Handbook of Surface and Colloid Chemistry", Second Edition (K. S. Birdi, Ed.), CRC Press, New York, 2002.
2001
1. Particles at Fluid Interfaces and Membranes: Attachment of Colloid Particles and Proteins to Interfaces and Formation of Two-Dimensional Arrays. P.A. Kralchevsky, K. Nagayama; Elsevier, Amsterdam, 2001: Book: 14 chapters, 654 pages.
2. Foam Destruction by Solid-Liquid Antifoams in Solutions of a Nonionic Surfactant: Electrostatic Interactions and Dynamic Effects. K.G. Marinova, N.D. Denkov, Langmuir 17 (2001) 2426-2436.
3. Effect of Oily Additives on Foamability and Foam Stability. 2. Entry Barriers. A. Hadjiiski, S. Tcholakova, N. D. Denkov, P. Durbut, G. Broze, A. Mehreteab, Langmuir 17 (2001) 7011-7021.
4. Effect of Oily Additives on Foamability and Foam Stability. 1. Role of Interfacial Properties. L. Arnaudov, N. D. Denkov, I. Surcheva, P. Durbut, G. Broze, A. Mehreteab, Langmuir 17 (2001) 6999-7010.
5. Foam Boosting by Amphiphilic Molecules in the Presence of Silicone Oil. E. S. Basheva, S. Stoyanov, N. D. Denkov, K. Kasuga, N. Satoh, K. Tsujii, Langmuir 17 (2001) 969-979.
6. Effect of Oil Drops and Particulates on the Stability of Foams. P. A. Kralchevsky and K. Nagayama, Chapter 14 in the book: "Particles at Fluid Interfaces and Membranes" (P. A. Kralchevsky and K. Nagayama, Authors) Elsevier, Amsterdam, 2001; pp. 591-633.
2000
1. Deposition of Oil Drops on a Glass Substrate in Relation to the Process of Washing. N.K. Dimov, E.H. Ahmed, R.G. Alargova, P.A. Kralchevsky, P. Durbut, G. Broze, and A. Mehreteab, J. Colloid Interface Sci. 224 (2000) 116-125.
2. Mechanisms of Action of Mixed Solid-Liquid Antifoams: 3. Exhaustion and Reactivation. N.D. Denkov, K.G. Marinova, C. Christova, A. Hadjiiski, Ph. Cooper, Langmuir 16 (2000) 2515-2528.
3. Antifoam Action of Oils. N.D. Denkov, K.G. Marinova, Proceedings of 3rd Eurofoam Conference, June, 2000, Delft, The Netherlands; Verlag MIT Publishing, Bremen, 2000, p. 199.
4. Role of Betaine as Foam Booster in the Presence of Silicone Oil Drops. E. S. Basheva, D. Ganchev, N. D. Denkov, K. Kasuga, N. Satoh, K. Tsujii, Langmuir, 16(3) (2000) 1000-1013.
5. Effect of Surfactants on the Stability of Films between Two Colliding Small Bubbles. D.S. Valkovska, K. D. Danov, I.B. Ivanov, Colloids Surf. A 175 (2000) 179-192.
1999
1. Surfactants Role on the Deformation of Colliding Small Bubbles. D. S. Valkovska, K. D. Danov, I. B. Ivanov, Colloids & Surfaces A 156 (1999) 547-566.
2. Mechanisms of Action of Mixed Solid-Liquid Antifoams. 1. Dynamics of Foam Film Rupture. N. D. Denkov, P. Cooper, J.-Y. Martin, Langmuir 15 (1999) 8514-8529.
3. Mechanisms of Action of Mixed Solid-Liquid Antifoams. 2. Stability of Oil Bridges in Foam Films. N. D. Denkov, Langmuir 15 (1999) 8530-8542.
4. Part 2 of the review "Equilibrium and Dynamics of Surfactant Adsorption Monolayers and Thin Liquid Films". K.D. Danov, P.A. Kralchevsky and I.B. Ivanov, in: Handbook of Detergents, Part A: Properties, G. Broze, Ed., Chapter 9. M. Dekker, New York, 1999; pp. 303-418.
1998
1. Effects of Counterions and Co-Ions on the Drainage and Stability of Liquid Films and Foams. J. K. Angarska, K. D. Tachev, P. A. Kralchevsky, A. Mehreteab and G. Broze, J. Colloid Interface Sci. 200 (1998) 31-45.
2. Effect of the Rheology on Foam Drainage. S. Stoyanov, C. Dushkin, D. Langevin, D. Weaire, G. Verbist, Langmuir 14 (1998) 4663-4665.
1997
1. Effect of Magnesium Ions on the Properties of Foam Films Stabilized with Sodium Dodecyl Sulfate. J. K. Angarska, K. D. Tachev, I. B. Ivanov, A. Mehreteab and G. Broze, J. Colloid Interface Sci. 195 (1997) 316-328.
2. Motion of the Front between Thick and Thin Film: Hydrodynamic Theory and Experiment with Vertical Foam Films. S. D. Stoyanov, V. N. Paunov, E. S. Basheva, I. B. Ivanov, A. Mehreteab and G. Broze, Langmuir 13 (1997) 1400-1407.
3. Effect of the Surfactant Concentration on the Kinetic Stability of Thin Foam and Emulsion Films. K. P. Velikov, O. D. Velev, K. G. Marinova, G. N. Constantinides, J. Chem. Soc., Faraday Trans. 93 (1997) 2069-2075.
1995
1. Foam Film Stability: Role of Micellar Interaction on the Formation and Expansion of Spots in Stratifying Film. An Overview. A.D. Nikolov, D.T. Wasan, P.A. Kralchevsky and I.B. Ivanov, in: "Fluid Physics, Lecture Notes of Summer Schools", M.G. Velarde and C.I. Christov, eds. World Scientific, London, 1995; pp. 209-228.
2. Thin Liquid Film Physics. P.A. Kralchevsky, K.D. Danov and I.B. Ivanov, in: "Foams: Theory, Measurements and Applications", R.K. Prud'homme, Editor; M. Dekker, New York, 1995; pp. 1-97.
1992
1. Dynamics of Contact Lines in Foam Films. I. B. Ivanov, P. A. Kralchevsky, A. S. Dimitrov and A. D. Nikolov, Adv. Colloid Interface Sci. 39 (1992) 77-101.
2. Contact Angle, Film and Line Tension of Foam Films. I. Stationary and Dynamic Contact Angle Measurements. I.B. Ivanov, A.S. Dimitrov, A.D. Nikolov, N.D. Denkov and P.A. Kralchevsky, J. Colloid Interface Sci. 151 (1992) 446-461.
3. Contact Angle, Film and Line Tension of Foam Films. II. Film and Line Tension Measurements. A.S. Dimitrov, A.D. Nikolov, P.A. Kralchevsky and I.B. Ivanov, J. Colloid Interface Sci. 151 (1992) 462-476.
1991
1. Multi-Stepwise Drainage and Viscosity of Macroscopic Films Formed from Latex Suspensions. E.S. Basheva, A.D. Nikolov, P.A. Kralchevsky, I.B. Ivanov, D.T. Wasan, in: "Surfactants in Solution", K.L. Mittal, D.O. Shah, Eds., Vol. 11, Plenum Press, New York, 1991, p. 467-479.
1990
1. Formation and Expansion of Dark Spots in Stratifying Foam Films. P.A. Kralchevsky, A. D. Nikolov, D. T. Wasan and I. B. Ivanov, Langmuir 6 (1990) 1180-1189.
2. Contact Angle of Air Bubbles Attached to an Air-Water Surface in Foam Applications. L. A. Lobo, A. D. Nikolov, A. S. Dimitrov, P. A. Kralchevsky and D. T. Wasan, Langmuir 6 (1990) 995-1001.
3. Drainage of Foam Films in the Presence of Nonionic Micelles. A.D. Nikolov, D.T. Wasan, N.D. Denkov, P.A. Kralchevsky, I.B. Ivanov, Progress in Colloid and Polymer Science 82 (1990) 87-98.
1989
1. Ordered Micelle Structuring in Thin Films Formed from Anionic Surfactant Solutions. I. Experimental. A. D. Nikolov, D. T. Wasan, J. Colloid Interface Sci. 133 (1989) 1-12.
2. Ordered Micelle Structuring in Thin Liquid Films Formed from Anionic Surfactant Solutions. II. Model Development. A.D. Nikolov, P.A. Kralchevsky, I.B. Ivanov, D.T. Wasan, J. Colloid Interface Sci. 133 (1989) 13-22.
3. Foam Stability in the Presence of Oil: the Importance of the Second Virial Coefficient. L. A. Lobo, A. D. Nikolov, D. T. Wasan, J. Dispersion Sci. and Technology 10 (1989) 143.
1988
1. Ordered Structures in Thinning Micellar Foam and Latex Films. A.D. Nikolov, D.T. Wasan, P.A. Kralchevsky and I.B. Ivanov, In: "Ordering and Organization in Ionic Solutions" (N. Ise and I. Sogami, Eds), World Scientific, London, 1988, p. 302-314.
2. Machanisms of Oil Removal from a Solid Surface in the Presence of Anionic Micellar Solutions. R. L. Kao, D. T. Wasan, A. D. Nikolov, D. A. Edwards, Colloids and Surfaces 34 (1988) 389.
3. Thin Film Drainage. I.B. Ivanov and D.S. Dimitrov, Chapter 7 in "Thin Liquid Films" (I.B. Ivanov, Ed.), M. Dekker, New York, 1988.
1986
1. Film and Line Tension Effects on the Attachment of Particles to an Interface: IV. Experimental Studies with Bubbles in Solutions of Dodecyl Sodium Sulfate. P. A. Kralchevsky, A. D. Nikolov and I. B. Ivanov. J. Colloid Interface Sci. 112 (1986) 132-143.
2. Foams: Basic Properties with Application to Porous Media. D. D. Huang, A. D. Nikolov, D. T. Wasan, Langmuir 2 (1986) 672.
1985
1. Washing Action and Dynamic Surface Tension. L. Petrova, J. Radkov, E. Basheva, A. D. Nikolov, VI Internationale Tagung uber Grenzflachenaktive Stoffe, Bad Stuer, 1985.