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  Subjects -> PHYSICS (Total: 798 journals)
    - ELECTRICITY AND MAGNETISM (9 journals)
    - MECHANICS (19 journals)
    - NUCLEAR PHYSICS (49 journals)
    - OPTICS (85 journals)
    - PHYSICS (581 journals)
    - SOUND (23 journals)
    - THERMODYNAMICS (32 journals)

PHYSICS (581 journals)                  1 2 3 | Last

Showing 1 - 200 of 741 Journals sorted alphabetically
Acta Acustica united with Acustica     Full-text available via subscription   (Followers: 6)
Acta Mechanica     Hybrid Journal   (Followers: 18)
Acta Scientifica Naturalis     Open Access   (Followers: 1)
Advanced Composite Materials     Hybrid Journal   (Followers: 60)
Advanced Functional Materials     Hybrid Journal   (Followers: 44)
Advanced Materials     Hybrid Journal   (Followers: 220)
Advanced Science Focus     Free   (Followers: 3)
Advanced Structural and Chemical Imaging     Open Access   (Followers: 2)
Advances in Condensed Matter Physics     Open Access   (Followers: 8)
Advances in Exploration Geophysics     Full-text available via subscription   (Followers: 3)
Advances in Geophysics     Full-text available via subscription   (Followers: 6)
Advances in High Energy Physics     Open Access   (Followers: 21)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 2)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 16)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 28)
Advances in OptoElectronics     Open Access   (Followers: 5)
Advances In Physics     Hybrid Journal   (Followers: 18)
Advances in Physics Theories and Applications     Open Access   (Followers: 13)
Advances in Physics: X     Open Access  
Advances in Remote Sensing     Open Access   (Followers: 34)
AIP Advances     Open Access   (Followers: 8)
AIP Conference Proceedings     Full-text available via subscription   (Followers: 3)
American Journal of Condensed Matter Physics     Open Access   (Followers: 4)
American Journal of Signal Processing     Open Access   (Followers: 10)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 4)
Annalen der Physik     Hybrid Journal   (Followers: 5)
Annales Geophysicae (ANGEO)     Open Access   (Followers: 15)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3)
Annales UMCS, Physica     Open Access  
Annals of Nuclear Medicine     Hybrid Journal   (Followers: 5)
Annals of Physics     Hybrid Journal   (Followers: 4)
Annals of West University of Timisoara - Physics     Open Access   (Followers: 1)
Annual Reports on NMR Spectroscopy     Full-text available via subscription   (Followers: 3)
Annual Review of Analytical Chemistry     Full-text available via subscription   (Followers: 9)
Annual Review of Condensed Matter Physics     Full-text available via subscription  
Annual Review of Materials Research     Full-text available via subscription   (Followers: 5)
APL Materials     Open Access   (Followers: 10)
Applied Composite Materials     Hybrid Journal   (Followers: 44)
Applied Physics A     Hybrid Journal   (Followers: 8)
Applied Physics Frontier     Open Access   (Followers: 1)
Applied Physics Letters     Hybrid Journal   (Followers: 33)
Applied Physics Research     Open Access   (Followers: 4)
Applied Physics Reviews     Hybrid Journal   (Followers: 9)
Applied Radiation and Isotopes     Hybrid Journal   (Followers: 6)
Applied Remote Sensing Journal     Open Access   (Followers: 33)
Applied Spectroscopy     Full-text available via subscription   (Followers: 23)
Applied Spectroscopy Reviews     Hybrid Journal   (Followers: 5)
Archive for Rational Mechanics and Analysis     Hybrid Journal  
Asia Pacific Physics Newsletter     Hybrid Journal  
ASTRA Proceedings     Open Access  
Astronomy & Geophysics     Hybrid Journal   (Followers: 48)
Astronomy and Astrophysics Review     Hybrid Journal   (Followers: 20)
Astrophysical Journal Supplement Series     Full-text available via subscription   (Followers: 6)
Atoms     Open Access  
Attention, Perception & Psychophysics     Full-text available via subscription   (Followers: 9)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 7)
Axioms     Open Access  
Bangladesh Journal of Medical Physics     Open Access  
Bauphysik     Hybrid Journal   (Followers: 2)
Berkala Fisika Indonesia     Open Access  
Biomaterials     Hybrid Journal   (Followers: 43)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 16)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 30)
Biophysical Reviews     Hybrid Journal  
Biophysical Reviews and Letters     Hybrid Journal   (Followers: 3)
BMC Biophysics     Open Access   (Followers: 5)
Boson Journal of Modern Physics     Open Access   (Followers: 12)
Brazilian Journal of Physics     Hybrid Journal  
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 9)
Bulletin of Materials Science     Open Access   (Followers: 41)
Bulletin of the Atomic Scientists     Full-text available via subscription   (Followers: 3)
Bulletin of the Lebedev Physics Institute     Hybrid Journal   (Followers: 1)
Bulletin of the Russian Academy of Sciences: Physics     Hybrid Journal  
Caderno Brasileiro de Ensino de Física     Open Access  
Canadian Journal of Physics     Full-text available via subscription   (Followers: 14)
Case Studies in Nondestructive Testing and Evaluation     Open Access   (Followers: 8)
Cells     Open Access   (Followers: 1)
CERN courier. International journal of high energy physics     Free   (Followers: 6)
Chemical Physics of Solid Surfaces     Full-text available via subscription  
Chinese Journal of Astronomy and Astrophysics     Full-text available via subscription   (Followers: 13)
Chinese Journal of Chemical Physics     Hybrid Journal   (Followers: 1)
Chinese Journal of Physics     Hybrid Journal  
Chinese Physics B     Full-text available via subscription  
Chinese Physics C     Full-text available via subscription  
Chinese Physics Letters     Full-text available via subscription  
Cogent Physics     Open Access  
Cohesion and Structure     Full-text available via subscription   (Followers: 2)
Colloid Journal     Hybrid Journal   (Followers: 2)
Communications in Mathematical Physics     Hybrid Journal   (Followers: 1)
Communications in Numerical Methods in Engineering     Hybrid Journal   (Followers: 2)
Communications in Theoretical Physics     Full-text available via subscription   (Followers: 2)
Complex Analysis and its Synergies     Open Access   (Followers: 2)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 160)
Composites Part B : Engineering     Hybrid Journal   (Followers: 208)
Computational Astrophysics and Cosmology     Open Access  
Computational Condensed Matter     Open Access  
Computational Materials Science     Hybrid Journal   (Followers: 21)
Computational Mathematics and Mathematical Physics     Hybrid Journal   (Followers: 1)
Computational Particle Mechanics     Hybrid Journal   (Followers: 1)
Computational Science and Discovery     Full-text available via subscription   (Followers: 2)
Computer Physics Communications     Hybrid Journal   (Followers: 6)
Contemporary Concepts of Condensed Matter Science     Full-text available via subscription  
Contemporary Physics     Hybrid Journal   (Followers: 27)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 6)
Contributions to Plasma Physics     Hybrid Journal   (Followers: 3)
COSPAR Colloquia Series     Full-text available via subscription   (Followers: 6)
Cryogenics     Hybrid Journal   (Followers: 44)
Current Applied Physics     Full-text available via subscription   (Followers: 4)
Current Science     Open Access   (Followers: 44)
Diagnostic and Interventional Imaging     Full-text available via subscription  
Diamond and Related Materials     Hybrid Journal   (Followers: 11)
Doklady Physics     Hybrid Journal   (Followers: 1)
Dynamical Properties of Solids     Full-text available via subscription  
ECS Journal of Solid State Science and Technology     Full-text available via subscription   (Followers: 3)
EDUSAINS     Open Access  
Egyptian Journal of Remote Sensing and Space Science     Open Access   (Followers: 19)
EJNMMI Physics     Open Access  
Electrospinning     Open Access  
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 38)
Energy Procedia     Open Access   (Followers: 2)
Engineering Failure Analysis     Hybrid Journal   (Followers: 64)
Engineering Fracture Mechanics     Hybrid Journal   (Followers: 22)
Environmental Fluid Mechanics     Hybrid Journal   (Followers: 3)
EPJ Nonlinear Biomedical Physics     Open Access  
EPJ Quantum Technology     Open Access  
EPJ Techniques and Instrumentation     Full-text available via subscription  
EPJ Web of Conferences     Open Access  
European Journal of Physics     Full-text available via subscription   (Followers: 19)
European Journal of Physics Education     Open Access   (Followers: 3)
European Physical Journal - Applied Physics     Full-text available via subscription   (Followers: 16)
European Physical Journal C     Hybrid Journal   (Followers: 1)
Europhysics News     Open Access  
Experimental Mechanics     Hybrid Journal   (Followers: 21)
Experimental Methods in the Physical Sciences     Full-text available via subscription  
Experimental Techniques     Hybrid Journal   (Followers: 56)
Exploration Geophysics     Hybrid Journal   (Followers: 4)
Few-Body Systems     Hybrid Journal  
Fire and Materials     Hybrid Journal   (Followers: 5)
Flexible Services and Manufacturing Journal     Hybrid Journal   (Followers: 1)
Fluctuation and Noise Letters     Hybrid Journal   (Followers: 1)
Fluid Dynamics     Hybrid Journal   (Followers: 10)
Fortschritte der Physik/Progress of Physics     Hybrid Journal  
Frontiers in Physics     Open Access   (Followers: 6)
Frontiers of Materials Science     Hybrid Journal   (Followers: 3)
Frontiers of Physics     Hybrid Journal   (Followers: 2)
Fusion Engineering and Design     Hybrid Journal   (Followers: 10)
Geochemistry, Geophysics, Geosystems     Full-text available via subscription   (Followers: 25)
Geografiska Annaler, Series A: Physical Geography     Hybrid Journal   (Followers: 3)
Geophysical Research Letters     Full-text available via subscription   (Followers: 102)
Geoscience and Remote Sensing, IEEE Transactions on     Hybrid Journal   (Followers: 118)
Glass Physics and Chemistry     Hybrid Journal   (Followers: 3)
Global Journal of Physics     Open Access   (Followers: 1)
Granular Matter     Hybrid Journal   (Followers: 1)
Graphs and Combinatorics     Hybrid Journal   (Followers: 6)
Gravitation and Cosmology     Hybrid Journal   (Followers: 3)
Handbook of Geophysical Exploration: Seismic Exploration     Full-text available via subscription  
Handbook of Metal Physics     Full-text available via subscription  
Handbook of Surface Science     Full-text available via subscription   (Followers: 2)
Handbook of Thermal Analysis and Calorimetry     Full-text available via subscription  
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 3)
Heat Transfer - Asian Research     Hybrid Journal   (Followers: 9)
High Energy Density Physics     Hybrid Journal   (Followers: 2)
High Pressure Research: An International Journal     Hybrid Journal   (Followers: 3)
IEEE Journal of Quantum Electronics     Hybrid Journal   (Followers: 20)
IEEE Signal Processing Magazine     Full-text available via subscription   (Followers: 59)
IET Optoelectronics     Hybrid Journal   (Followers: 1)
Il Colle di Galileo     Open Access  
Imaging Science Journal     Hybrid Journal   (Followers: 2)
Indian Journal of Biochemistry and Biophysics (IJBB)     Open Access   (Followers: 3)
Indian Journal of Physics     Hybrid Journal   (Followers: 20)
Indian Journal of Pure & Applied Physics (IJPAP)     Open Access   (Followers: 36)
Indian Journal of Radio & Space Physics (IJRSP)     Open Access   (Followers: 35)
Industrial Electronics, IEEE Transactions on     Hybrid Journal   (Followers: 27)
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 6)
Infinite Dimensional Analysis, Quantum Probability and Related Topics     Hybrid Journal  
InfraMatics     Open Access  
Infrared Physics & Technology     Hybrid Journal   (Followers: 10)
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 8)
Intermetallics     Hybrid Journal   (Followers: 21)
International Applied Mechanics     Hybrid Journal   (Followers: 3)
International Geophysics     Full-text available via subscription   (Followers: 3)
International Heat Treatment and Surface Engineering     Hybrid Journal   (Followers: 3)
International Journal for Computational Methods in Engineering Science and Mechanics     Hybrid Journal   (Followers: 10)
International Journal for Ion Mobility Spectrometry     Hybrid Journal   (Followers: 1)
International Journal for Simulation and Multidisciplinary Design Optimization     Open Access   (Followers: 2)
International Journal of Abrasive Technology     Hybrid Journal   (Followers: 2)
International Journal of Aeroacoustics     Full-text available via subscription   (Followers: 27)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 4)
International Journal of Astronomy and Astrophysics     Open Access   (Followers: 21)
International Journal of Computational Materials Science and Surface Engineering     Hybrid Journal   (Followers: 6)
International Journal of Damage Mechanics     Hybrid Journal   (Followers: 5)
International Journal of Fatigue     Hybrid Journal   (Followers: 33)
International Journal of Fracture     Hybrid Journal   (Followers: 11)
International Journal of Geometric Methods in Modern Physics     Hybrid Journal   (Followers: 2)
International Journal of Geophysics     Open Access   (Followers: 5)
International Journal of Heat and Fluid Flow     Hybrid Journal   (Followers: 31)
International Journal of Low Radiation     Hybrid Journal  
International Journal of Low-Carbon Technologies     Open Access   (Followers: 1)
International Journal of Mass Spectrometry     Hybrid Journal   (Followers: 16)
International Journal of Material Forming     Hybrid Journal  

        1 2 3 | Last

Journal Cover Colloid Journal
  [SJR: 0.316]   [H-I: 23]   [2 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1608-3067 - ISSN (Online) 1061-933X
   Published by Springer-Verlag Homepage  [2336 journals]
  • Heavy oil as an emulsion: Composition, structure, and rheological
           properties
    • Authors: N. M. Zadymova; Z. N. Skvortsova; V. Yu. Traskin; G. P. Yampol’skaya; M. V. Mironova; E. I. Frenkin; V. G. Kulichikhin; A. Ya. Malkin
      Pages: 735 - 746
      Abstract: Abstract Recent works devoted to studying the structure and rheological properties of water/oil disperse systems have been reviewed. Contemporary understandings of crude heavy oil as a water-in-oil emulsion have been discussed. Data on the mechanism of the stabilizing effect of natural lipophilic surfactants and ultradispersed particles of different natures contained in oil have been presented. Methods that are used to improve the transport characteristics of heavy oil—in particular, the formation of low-viscosity oil-in-water emulsions—have been listed. Colloidal and rheological properties of heavy oil-in-water emulsions, which are increasingly applied for pipeline transportation of oil, have been considered.
      PubDate: 2016-11-01
      DOI: 10.1134/s1061933x16060211
      Issue No: Vol. 78, No. 6 (2016)
       
  • Adsorption of amino acids on a cerium dioxide surface
    • Authors: N. N. Vlasova
      Pages: 747 - 752
      Abstract: Abstract Adsorption of glutamic, aspartic, and pteroylglutamic (folic) acids from aqueous solutions on the surface of nanocrystalline cerium dioxide has been studied as depending on the pH and ionic strength of the solutions. Stability constants have been calculated for surface complexes that result from the interaction of anionic forms of the amino acids with protonated surface groups of cerium dioxide. The structure of the surface complexes has been confirmed by IR spectroscopy.
      PubDate: 2016-11-01
      DOI: 10.1134/s1061933x16060181
      Issue No: Vol. 78, No. 6 (2016)
       
  • Formation of copper–polymer nanocomposite upon copper electrodeposition
           in the presence of poly( N -vinylpyrrolidone)
    • Authors: A. Yu. Vorob’ev; A. I. Papisova; I. M. Papisov; M. I. Buzin; A. G. Bogdanov; I. Yu. Isaeva; G. Yu. Ostaeva
      Pages: 753 - 758
      Abstract: Abstract The composition and structure of products formed on a cathode upon electrodeposition of copper from copper sulfate–poly(N-vinylpyrrolidone) mixed solutions have been studied. These products have been shown to be nanocomposites consisting of copper nanoparticles and the polymer. It has been suggested that the composite is formed by a pseudotemplate mechanism via noncovalent interaction between macromolecules and copper particles growing on the cathode. The interaction is accompanied by deceleration of subsequent growth of particles because of their screening by the polymer. This decreases the sizes of copper particles in the reaction product and the rate of metal reduction. The sonication of the reaction system yields a nanocomposite sol containing nanoparticles of copper(I) oxide. The oxide results from rapid oxidation of copper metal particles that have passed to the sol with copper(II) ions.
      PubDate: 2016-11-01
      DOI: 10.1134/s1061933x16060193
      Issue No: Vol. 78, No. 6 (2016)
       
  • Colloido-chemical characteristics of nanoporous glasses with different
           compositions in solutions of simple and organic electrolytes. 2.
           Equilibrium electrochemical characteristics of membranes
    • Authors: L. E. Ermakova; A. V. Volkova; V. V. Faraonova; T. V. Antropova
      Pages: 759 - 766
      Abstract: Abstract The regularities of variations in the electrokinetic potential and surface charge of nanoporous glass membranes with different compositions have been studied as depending on the type of an electrolyte (sodium, potassium, ammonium, tetramethylammonium, and tetraethylammonium chlorides) and the structure of pore space. It has been shown that, in solutions containing specifically sorbed organic counterions, the range of positive values of electrokinetic potential arises due to the superequivalent absorption of counterions in the Stern layer. It has been found that the influence of the specific adsorption of counterions on the electrokinetic potential of porous glasses increases with the amount of secondary silica in the pore space. The effects of the counterion specificity, pore channel sizes, and composition of a porous glass on the value of the surface charge have been analyzed. The absolute value of the surface charge has been shown to significantly increase in the presence of organic counterions in comparison with inorganic ions throughout the examined range of background electrolyte concentrations.
      PubDate: 2016-11-01
      DOI: 10.1134/s1061933x16060041
      Issue No: Vol. 78, No. 6 (2016)
       
  • Oxidation of nonionic surfactants with molecular oxygen
    • Authors: O. T. Kasaikina; E. A. Mengele; I. G. Plashchina
      Pages: 767 - 771
      Abstract: Abstract Kinetic regularities are studied for the air oxidation of surfactants that are widely used in the food industry, such as natural phosphatidylcholine (egg lecithin, PC) and synthetic nonionic surfactants Triton X-100 (ТХ-100), Tween 65, and Pluronic F68. Azobis(amidinopropane)-dichloride-initiated oxidation of these surfactants in an aqueous medium at 37°C develops via the chain free-radical mechanism. The chain length is equal to 5–10 units, depending on the initiator-to-surfactant concentration ratio. The rate of surfactant oxidation in an aqueous medium is proportional to the rate of radical initiation. At the same mass concentrations of the reagents, the rate of PC oxidation is several times higher than the oxidation rates of the other surfactants. The addition of TX-100 to PC liposomes decelerates the oxidation; i.e., TX-100 plays the role of an antioxidant for PC. The superposition of the oxidation rates of individual and mixed PC and TX-100 with the sizes of the microaggregates formed in their aqueous solutions shows that the antioxidation action of TX-100 is realized via the formation of a protective layer composed of its ethylene oxide groups, which shields PC liposomes from radicals, which are initiated in the bulk of an aqueous phase due to the decomposition of azobis(amidinopropane) dichloride.
      PubDate: 2016-11-01
      DOI: 10.1134/s1061933x16060065
      Issue No: Vol. 78, No. 6 (2016)
       
  • Synthesis and properties of latex particles with polyaniline shells
    • Authors: A. N. Korovin; A. V. Kubar’kov; K. A. Milakin; O. A. Pyshkina; V. G. Sergeev
      Pages: 772 - 779
      Abstract: Abstract Core–shell polyaniline–latex particles have been obtained via oxidative polymerization of aniline hydrochloride in the presence of charged polystyrene latex. The polymerization conditions have been determined under which polyaniline is predominantly formed on the surface of latex particles to yield closed shells. The dependence of the electrical conductivity of the resulting particles on the initial concentration of aniline hydrochloride in the polymerization medium has been studied. Stable aqueous dispersions of polyaniline–latex particles have been prepared by modifying the particles with sodium 3-mercaptopropane sulfonate.
      PubDate: 2016-11-01
      DOI: 10.1134/s1061933x16060077
      Issue No: Vol. 78, No. 6 (2016)
       
  • Electrical conductivity of graphite suspensions in potassium chloride
           solutions in direct- and alternating-current electric fields
    • Authors: A. N. Lopanov; E. A. Fanina; K. V. Tikhomirova
      Pages: 780 - 784
      Abstract: Abstract Electrical conductivity of graphite dispersions in aqueous KCl solutions has been measured. The measurements have been performed in alternating- (1000 Hz) and direct-current electric fields. In an alternating-current electric field, at electrolyte concentrations of 0.0005–0.01 М, the conductivity increases as depending on the mass fraction of the dispersed phase. In 0.1 М solutions, a decrease in the conductivity of the suspension is followed by an increase at dispersed phase contents of higher than 15 wt %. In a direct-current electric field, the conductivity of graphite suspensions (0.001–0.01 М KCl) varies slightly and increases at dispersed phase contents of higher than 15 wt %. In 0.1 М solutions, the specific conductivity of the suspension initially decreases and, then, increases at dispersed phase concentrations above 15 wt %. The unusual electrical properties of the suspensions have been explained as being results of variations in the capacitive and active components of the conductivity of graphite dispersions in electrolytes within the framework of a topological model. Particle polarization and a relatively high capacitive component of the conductivity mainly contribute to an increase in the conductivity of the suspensions in 0.0005–0.01 М electrolytes in the alternating-current electric field. A decrease in the conductivity of suspensions in 0.1 М electrolytes is due to a negative difference between the capacitive and active components of the specific conductivity. It has been assumed that the aggregation of graphite particles yields conducting structures at dispersed phase concentrations above 15 wt %.
      PubDate: 2016-11-01
      DOI: 10.1134/s1061933x16060090
      Issue No: Vol. 78, No. 6 (2016)
       
  • Calculation aspects of diffusion coefficients in micellar solutions of
           ionic surfactants
    • Authors: T. G. Movchan; A. I. Rusanov; E. V. Plotnikova
      Pages: 785 - 794
      Abstract: Abstract A method has been analyzed for calculating diffusion coefficients of 1 : 1 ionic surfactants as functions of their micellar solution concentrations within the framework of the quasi-chemical variant of the law of mass action. Relations have been presented for two- (with no allowance for micelles) and three-particle interaction (with allowance for micelles) formalisms. The methods for the introduction of initial calculation parameters and the calculation scheme for an ideal mixture of monomeric ions and micelles, as well as the correction for a deviation from ideality and a change in solution viscosity, have been considered. Numerical assessments have been performed by the examples of aqueous sodium dodecyl sulfate and alkyltrimethylammonium bromide solutions.
      PubDate: 2016-11-01
      DOI: 10.1134/s1061933x16060107
      Issue No: Vol. 78, No. 6 (2016)
       
  • On the Schroeder paradox for ion-exchange polymers
    • Authors: V. I. Roldughin; L. V. Karpenko-Jereb
      Pages: 795 - 799
      Abstract: Abstract The known Schroeder paradox, i.e., a difference in the degree of swelling of ion-exchange polymers at equilibrium with liquid water and its vapor, has been discussed. It has been noted that there is no paradoxicality in this phenomenon. An example of different “swelling” based on trivial physical considerations has been presented. A simple mechanism has been proposed for increased swelling of an ion-exchange polymer immersed in liquid water, this mechanism being associated with the action of the Maxwell stresses at a polymer/electrolyte interface. The predicted values of the “excess” swelling have been shown to correspond to the data of real experiments.
      PubDate: 2016-11-01
      DOI: 10.1134/s1061933x16060132
      Issue No: Vol. 78, No. 6 (2016)
       
  • Self-organization of supramolecular microporous structures based on carbon
           nanotubes and benzene
    • Authors: A. V. Shkolin; A. A. Fomkin
      Pages: 800 - 807
      Abstract: Abstract The molecular dynamic has been used to study the self-organization of carbon nanotubes into an array in the presence of coordinating molecules. Methane adsorption on model systems has been calculated. It has been shown that secondary porosity formed by the nanotubes makes it possible to accumulate methane at the level of the best commercial adsorbents. Supramolecular systems have been synthesized on the basis of carbon nanotubes and benzene molecules used as coordinators according to a scheme realized in the numerical simulation. The specific adsorption of nitrogen at 293 K on the obtained supramolecular structure has been shown to increase by more than tenfold as compared with that on initial nanotubes.
      PubDate: 2016-11-01
      DOI: 10.1134/s1061933x16060144
      Issue No: Vol. 78, No. 6 (2016)
       
  • On the feasibility of using sodium octyl sulfate micelles for template
           polymerization of a cationic monomer
    • Authors: Yu. V. Shulevich; M. V. Motyakin; A. M. Wasserman; Yu. A. Zakharova; E. G. Dukhanina; A. V. Navrotskii; I. A. Novakov
      Pages: 808 - 815
      Abstract: Abstract Spin probe EPR spectroscopy has been employed to study the effect of a cationic monomer, trimethyl(methacryloxyethyl)ammonium methyl sulfate, on the formation, local structure, and dynamics of sodium octyl sulfate micelles in aqueous solutions. It has been established that the monomer does not affect significantly the parameters of probe rotation in micelles of this surfactant, thereby indicating a weak interaction between the studied monomer and surfactant micelles. The absence of a template effect upon monomer polymerization in micellar sodium octyl sulfate solutions, which has been confirmed by unchanged molecular-mass characteristics of obtained polymers, indicates that it is inefficient to use sodium octyl sulfate micelles as a template for radical polymerization of cationic monomers in aqueous media, in contrast to sodium dodecyl sulfate micelles studied previously.
      PubDate: 2016-11-01
      DOI: 10.1134/s1061933x16060156
      Issue No: Vol. 78, No. 6 (2016)
       
  • Sol–gel synthesis of silica containers using a corrosion inhibitor,
           catamine AB, as a templating agent
    • Authors: O. V. Dement’eva; L. V. Frolova; V. M. Rudoy; Yu. I. Kuznetsov
      Pages: 596 - 601
      Abstract: Abstract It has been shown that silica container particles containing a large amount (~1 g/g of SiO2) of a corrosion inhibitor, catamine AB, can be obtained, with the inhibitor being loaded at the stage of the sol–gel synthesis of the particles by using catamine micelles as a template. Being introduced into an H2S-containing aggressive aqueous medium, such containers protect rather efficiently carbon steel from hydrogen-sulfide corrosion and hydrogenation. The protection effect seems to be realized via not only the release (desorption) of catamine AB molecules from the containers, but also the adsorption of the products of gradual dissolution of silica matrix on the surface of metal being protected.
      PubDate: 2016-09-01
      DOI: 10.1134/s1061933x16050057
      Issue No: Vol. 78, No. 5 (2016)
       
  • A study of the stability of aqueous suspensions of functionalized carbon
           nanotubes
    • Authors: E. A. Zakharychev; M. A. Kabina; E. N. Razov; L. L. Semenycheva
      Pages: 602 - 607
      Abstract: Abstract The properties of aqueous suspensions of carbon nanotubes have been studied as depending on the conditions of their functionalization in a mixture of sulfuric and nitric acids. The elemental composition and contents of carboxyl, lactone, and hydroxyl groups in carbon nanotubes have been determined at different durations and temperatures of functionalization. The influence of functionalization conditions on the value of the electrokinetic potential of carbon nanotubes in aqueous suspensions and the nanotube solubility in water has been investigated. It has been found that the absolute value of the electrokinetic potential of nanotubes and their solubility in water increase with both the duration and temperature of functionalization due to a rise in the number of functional groups on their surface. The optimal regimes of functionalization of carbon nanotubes have been determined from the point of view of preserving their structure and stability in aqueous dispersions.
      PubDate: 2016-09-01
      DOI: 10.1134/s1061933x16050240
      Issue No: Vol. 78, No. 5 (2016)
       
  • Dependence of the structure of ring-shaped deposits resulting from
           evaporation of dispersion droplets on initial contact angle
    • Authors: S. P. Molchanov; V. I. Roldughin; I. A. Chernova-Kharaeva; G. A. Yurasik
      Pages: 633 - 640
      Abstract: Abstract Experiments have been performed on the formation of ding-shaped deposits upon the evaporation of dispersion droplets on different substrates accompanied by the coffee ring effect. The main attention has been focused on studying the structure of a formed deposit as depending on the initial contact angle of a droplet. It has been established that the deposit structure may vary from ring-shaped to disc-shaped with a decrease in the contact angle. For certain systems, as the initial contact angle is varied, the scenario of droplet evaporation may change and, in some cases, acquire a combined character. Before the onset of pinning, menisci of droplets that are evaporated on modified polymer substrates may initially move not only toward the droplet center, but also in the opposite direction.
      PubDate: 2016-09-01
      DOI: 10.1134/s1061933x16050094
      Issue No: Vol. 78, No. 5 (2016)
       
  • Premicellar aggregation in water–salt solutions of sodium alkyl
           sulfonates and dodecyl sulfate
    • Authors: E. A. Reshetnyak; O. S. Chernyshova; N. O. Mchedlov-Petrosyan
      Pages: 647 - 651
      Abstract: Abstract The features of premicellar aggregation in aqueous solutions of sodium n-octyl, n-nonyl, and n-decyl sulfonate, as well as sodium n-dodecyl sulfate, at a constant ionic strength maintained by adding NaCl are studied by potentiometry using modified ion-selective electrodes reversible with respect to the ions of these surfactants. For the studied surfactants, the critical micelle concentrations are refined, the compositions of the products of premicellar aggregation are determined, and the stability constants of aggregates are evaluated.
      PubDate: 2016-09-01
      DOI: 10.1134/s1061933x16050124
      Issue No: Vol. 78, No. 5 (2016)
       
  • Nonequilibrium thermodynamics of transport processes on membrane surfaces
    • Authors: V. I. Roldughin; V. M. Zhdanov; T. V. Kharitonova
      Pages: 652 - 657
      Abstract: Abstract Nonequilibrium processes have been considered on interfaces between media, with one medium being a permeable membrane. The nonequilibrium processes have been described in terms of nonequilibrium thermodynamics combined with the Fokker−Planck kinetic equation. Phenomenological equations derived within the framework of the combined approach have been discussed. It has been shown that the formal use of linear equations of nonequilibrium thermodynamics may be, in some cases, reduced to nonlinear equations for heat and mass transfer through an interface. It has been noted that the asymmetry of transport characteristics of asymmetric membranes may be explained in terms of the derived relations.
      PubDate: 2016-09-01
      DOI: 10.1134/s1061933x16050136
      Issue No: Vol. 78, No. 5 (2016)
       
  • Refining the ionic surfactant micellization theory based on the law of
           mass action
    • Authors: A. I. Rusanov
      Pages: 669 - 673
      Abstract: Abstract The micellization theory previously elaborated based on the determination of critical micelle concentration using the constant of the law of mass action is refined for ionic surfactants. The degree of micellization is used as a parameter to obtain implicit dependences of monomer and micelle concentrations on overall surfactant concentration in an ideal micellar solution. As expected, the counterion concentration increases monotonically, while the surface-active ion concentration passes through a maximum immediately after the critical micelle concentration. Repeated calculations performed at different degrees of counterion binding show that, as this parameter is decreased, the maximum becomes sharper, disappearing when the parameter becomes equal to unity. The complex character of the exact analytical description of the concentration functions for monomers and micelles is in contrast to their simple graphical representations. This fact makes it possible to derive simple analytical approximations for them in the form of explicit functions useful for calculations.
      PubDate: 2016-09-01
      DOI: 10.1134/s1061933x1605015x
      Issue No: Vol. 78, No. 5 (2016)
       
  • Effect of salts on synthesis of mesoporous materials with mixed cationic
           and anionic surfactants as templates
    • Authors: Hong-ni Teng; Teng Shen; Yi-xiao Hou; Yong Chen; Xiao-yan Kou; Xiu-yun Wang; Man Hai
      Pages: 690 - 697
      Abstract: Abstract Mesoporous silica materials were synthesized using tetraеthoxysilane as precursor and liquid crystals formed in aqueous mixtures of cetyl trimethyl ammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) as templates, without and with the addition of NaBr or Na2SO4. For this purpose, the formation of liquid crystals as a function of the ratio of CTAB and SDS under different conditions was studied. It was found that liquid crystals formed in the mixed system of CTAB and SDS at certain mixing ratios are well-structured templates for the synthesis of mesoporous silicas. The synthesized silica materials were characterized by transmission electron microscope and nitrogen adsorption/desorption analysis. The pore size of mesoporous silicas could be controlled between 3 to 6 nm by simply changing the concentration of NaBr in solution. The mesoporous silicas exhibited lamellar structure and the order of structural arrangement was promoted with addition of NaBr. However, addition of Na2SO4 led to ink-bottle type pores of mesoporous silica with a narrow pore size distribution of around 2 nm and a higher specific surface area of 610 m2 g–1.
      PubDate: 2016-09-01
      DOI: 10.1134/s1061933x16050203
      Issue No: Vol. 78, No. 5 (2016)
       
  • Calculation of vapor mass flux upon isothermal condensation on spherical
           droplets in a wide range of Knudsen numbers based on the solution of the
           Boltzmann kinetic equation
    • Authors: I. N. Shishkova; A. K. Yastrebov
      Pages: 722 - 729
      Abstract: Abstract Vapor mass flux density has been calculated on the surface of spherical droplets under almost isothermal conditions. The calculations have been performed at droplet radii corresponding to the free-molecular, intermediate, and continuum flow regimes. The study has been performed by the direct numerical solution of the Boltzmann kinetic equation. The method of characteristics has been adapted for describing transfer processes in spherically symmetric systems. The applicability of different simplified approaches to the calculation of mass flux density on droplet surface has been estimated.
      PubDate: 2016-09-01
      DOI: 10.1134/s1061933x16050173
      Issue No: Vol. 78, No. 5 (2016)
       
  • Activity coefficients in an ionic micellar system
    • Authors: A. I. Rusanov
      Pages: 733 - 734
      Abstract: Abstract The average activity coefficients of ionic surfactants as a whole and their monomeric forms are compared. The concept of an aggregative activity coefficient is introduced.
      PubDate: 2016-09-01
      DOI: 10.1134/s1061933x16050161
      Issue No: Vol. 78, No. 5 (2016)
       
 
 
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