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Journal Cover Polymer Science Series C
  [SJR: 0.575]   [H-I: 15]   [4 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1555-614X - ISSN (Online) 1811-2382
   Published by Springer-Verlag Homepage  [2354 journals]
  • Polyelectrolytes-2016
    • Authors: T. M. Birshtein; E. V. Chernikova
      Pages: 1 - 2
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010027
      Issue No: Vol. 59, No. 1 (2017)
       
  • Polymer gels as artificial soft tissue
    • Authors: Yoshihito Osada
      Pages: 3 - 10
      Abstract: Soft tissue consists a main body of biological systems. It is made of hydrogels mainly composed of extra cellular matrix (ECM), which is the three-dimensional highly organized and inter-woven network of proteins and polysaccharides. ECM has three symbolic roles. They are pertinent and excellent mechanical performance, extremely low friction, and effective and selective transportation of solute molecules for cell viability. One of the important goals for gel science would be to design and create hydrogels with critical parameters, which natural tissues possess and eventually to replace them with artificial one.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010106
      Issue No: Vol. 59, No. 1 (2017)
       
  • Tough, self-recovery and self-healing polyampholyte hydrogels
    • Authors: Tao Lin Sun; Kunpeng Cui; Jian Ping Gong
      Pages: 11 - 17
      Abstract: This article reviews the recently developed tough, self-recovery, and self-healing polyampholyte hydrogels. Polyampholyte hydrogels are synthesized using one-step radical copolymerization of cationic and anionic monomers with equal charges at high monomer concentration. The random copolymerization process makes the ionic monomers randomly distributing along the backbones, resulting in the formation of ionic bonds with a wide strength distribution via inter and intra chain complexation in the polymer network, weak bond and strong bonds. The strong bonds serve as permanent cross-linking, integrating the hydrogels to impart the elastic behavior, while the weak bonds can break upon the loading, dissipating energy to give the toughness, and re-form again after unloading to enable the self-recovery behavior. Accordingly, polyampholyte hydrogels have condensed polymers in water (ca 40−50 wt %). They are strongly viscoelastic and have a high toughness (fracture energy of 4000 J/m2), a wide range of tuning modulus (0.01 to 8 MPa), 100% self-recovery, and a high self-healing efficiency after cutting.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010118
      Issue No: Vol. 59, No. 1 (2017)
       
  • DNA-based materials as chemical reactors for synthesis of metal
           nanoparticles
    • Authors: Anatoly Zinchenko; Vladimir G. Sergeyev
      Pages: 18 - 28
      Abstract: In this minireview we highlight a recent progress in preparation of DNA-based matrices that can be used as reactors for templating of inorganic nanomaterials and, in particular, highlight catalytic applications of such hybrid materials. We also discuss advantages and disadvantages of DNA utilization as a material and outline prospects of DNA-based technologies in future.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010155
      Issue No: Vol. 59, No. 1 (2017)
       
  • Bioactive properties of nanochitosan Bombyx mori
    • Authors: R. Yu. Milusheva; S. Sh. Rashidova
      Pages: 29 - 34
      Abstract: Nanochitosan with the size of particles in the range of 20–100 nm is synthesized from chitosan Bombyx mori. It is shown that preparations based on chitosan and nanochitosan are characterized by a well-pronounced antibacterial activity. Nanochitosan is able to substantially enhance the immune response of a living system: it increases the number of cells both in central (thymus, marrow) and peripheral (lymph glands) immune organs of mice.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010088
      Issue No: Vol. 59, No. 1 (2017)
       
  • Block-copolymer micelles with a interpolyelectrolyte crown
    • Authors: E. A. Lysenko; R. S. Bilan; P. S. Chelushkin
      Pages: 35 - 48
      Abstract: The dispersion stability, structure, and properties of polymer micelles with the hydrophobic core and the interpolyelectrolyte crown in dilute water–salt solutions are studied by turbidimetry, velocity sedimentation, static and dynamic light scattering, fluorescence spectroscopy, and electron microscopy, as well as by measuring the electrophoretic mobility of the particles. The micelles are obtained by mixing diblock copolymers PS–block-poly(N-ethyl-4-vinylpyridine bromide) and PS–block-poly(acrylic acid) by a specially developed technique of water introduction in the mixture of copolymers in a nonselective organic solvent. It is found that the dispersion stability and the structural and physicochemical characteristics of micelles with the interpolyelectrolyte crown depend on the balance of electrostatic interactions of similarly and oppositely charged units in the crown. In turn, this balance is determined by the composition of the interpolyelectrolyte crown as well as by the pH and ionic strength of solution. It is shown that the micelles with the interpolyelectrolyte crown can be considered to be a special type of polyelectrolyte nanoparticles combining the properties of polyelectrolyte micelles and interpolyelectrolyte complexes. The unique ability of such micelles to electrostatically bind similarly charged polyions with a high linear charge density to the crown is demonstrated. It is first found that such a binding can be selective.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010076
      Issue No: Vol. 59, No. 1 (2017)
       
  • Influence of chain microstructure of acrylic acid and 4-vinylpyridine
           copolymers on their aggregative stability and adsorption from aqueous
           solutions
    • Authors: E. A. Litmanovich; E. V. Chernikova; A. E. Zhirnov
      Pages: 49 - 59
      Abstract: The behavior of acrylic acid–4-vinylpyridine copolymers of different architectures, namely, with gradient and block distributions of comonomer units in a chain as well as with quaternized 4-vinylpyridine units, is studied. It is shown that all the copolymers are prone to aggregation in acidic and alkaline media and that the sizes of aggregates and the regions of their stability are determined by chain microstructure. The aggregates formed in acidic media exhibit temperature sensitivity. The kinetics and mechanism of copolymer adsorption from solutions on the surface of nylon membranes are explored. It is shown that the block distribution of units substantially increases the adsorption efficiency, while the quaternization of 4-vinylpyridine units decreases the monolayer adsorption parameters.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010064
      Issue No: Vol. 59, No. 1 (2017)
       
  • Electrostatic complexes of liquid and solid liposomes with spherical
           polycationic brushes
    • Authors: A. V. Sybachin; O. V. Zaborova; A. A. Efimova; M. Ballauff; A. A. Yaroslavov
      Pages: 60 - 67
      Abstract: The complexation of anionic liposomes and polymeric microspheres with grafted polycationic chains (spherical polycationic brushes) is studied. Three types of liposomes with the same molar amount of the anionic lipid are used, namely, liquid liposomes with a high mobility of lipids within the bilayer, solid liposomes with limited lateral and transmembrane mobility of lipid molecules, and solid liposomes with embedded cholesterol. All liposomes efficiently adsorb on the surface of brushes. Upon adsorption, solid liposomes begin to “leak,” that is, to release water-soluble contents in the surrounding solution, whereas solid liposomes with the embedded cholesterol preserve their integrity. Cholesterol-containing liposomes are of interest for obtaining multiliposomal containers with encapsulated biologically active compounds, catalysts, diagnostic agents, etc.
      PubDate: 2017-09-01
      DOI: 10.1134/s181123821701012x
      Issue No: Vol. 59, No. 1 (2017)
       
  • Self-assembly of hydrophobic polybetaine based on (tridecyl)aminocrotonate
           and methacrylic acid
    • Authors: A. V. Shakhvorostov; Zh. A. Nurakhmetova; T. M. Seilkhanov; Nurxat Nuraje; S. E. Kudaibergenov
      Pages: 68 - 76
      Abstract: Novel polymeric betaine based on tridecylaminocrotonate and methacrylic acid was synthesized by Michael addition reaction. The obtained products were abbreviated as CROtriDA-MAA and with respect to its potassium salt as CROtriDA-MAA-K. The structure of CROtriDA-MAA was established by 1H NMR and FTIR spectroscopy. The hydrodynamic, molecular and conformational properties of CROtriDA-MAA-K in solutions and morphology in solid state were evaluated by methods of GPC, DLS, zeta-potential, surface enhanced ellipsoidal microscopy (SEEC), optical microscopy. Meanwhile, the long alkyl “tails” (tridecyl) located in side polymeric chains are responsible for self-assembling behavior. Several types of self-assembled structures in water at different pH and in water–DMSO mixture were observed. The dendritic structure with wide trunks and few side branches is formed at pH 3. The “Maltese cross-like” aggregates were found at pH 6.5. The tree-like fractal patterns are formed at pH 12. The self-assembled coiled-ribbon-like and tubular-like aggregates were observed in water–DMSO mixtures.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010167
      Issue No: Vol. 59, No. 1 (2017)
       
  • Dissipative particle dynamics simulations of polyelectrolyte
           self-assemblies. Methods with explicit electrostatics
    • Authors: Martin Lísal; Karel Šindelka; Lucie Suchá; Zuzana Limpouchová; Karel Procházka
      Pages: 77 - 101
      Abstract: This feature article is addressed to a broad community of polymer scientists, both theoreticians and experimentalists. We present several examples of our dissipative particle dynamics (DPD) simulations of selfand co-assembling polyelectrolyte systems to illustrate the power of DPD. In the first part, we briefly outline basic principles of DPD. Special emphasis is placed on the incorporation of explicit electrostatic forces into DPD, on their calibration with respect to the soft repulsion forces and on the use of DPD for studying the self-assembly of electrically charged polymer systems. At present, the method with explicit electrostatics is being used in a number of studies of the behavior of single polyelectrolyte chains, their interaction with other components of the system, etc. However, in DPD studies of self-assembly, which require high numbers of chains, only a few research groups use explicit electrostatics. Most studies of polyelectrolyte self-assembly are based on the “implicit solvent ionic strength” approach, which completely ignores the long-range character of electrostatic interactions, because their evaluation complicates and considerably slows down the DPD simulation runs. We aim at the analysis of the impact of explicit electrostatics on simulation results.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010052
      Issue No: Vol. 59, No. 1 (2017)
       
  • Polymer chain mobility in polyelectrolyte multilayers
    • Authors: Karel Friess; Alexander Sagidullin; Brigitte Wiesner; Jochen Meier-Haack; Ulrich Scheler
      Pages: 102 - 105
      Abstract: Free-standing polyelectrolyte multilayer membranes have been formed by the layer-by-layer technique using a dip-coating apparatus. The polymer-chain mobility has been studied by 1H relaxation in the rotating frame T 1rho NMR with 13C chemical shift resolution. For each of the individual polymers a single relaxation component has been observed for all resolved signals. In the multilayer a significantly different relaxation time T 1rho has been observed with a minor second component. The interaction between the oppositely charged polyelectrolytes influences the molecular mobility.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010040
      Issue No: Vol. 59, No. 1 (2017)
       
  • Dendritic polyelectrolyte brushes
    • Authors: E. B. Zhulina; O. V. Borisov
      Pages: 106 - 118
      Abstract: The current state of the theory of brushes formed by dendritically branched ionized macromolecules attached by the root segment to a planar substrate and immersed in a polar solvent (water) is discussed. The theory makes it possible to unravel the most distinctive features of such brushes associated with the branched architecture of brush-forming chains and to systematically compare them with the properties of brushes formed by linear polyelectrolyte chains. Owing to their peculiar properties, dendritic polyelectrolyte brushes show promise for designing smart functional polymeric materials.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010143
      Issue No: Vol. 59, No. 1 (2017)
       
  • How does poly( N -isopropylacrylamide) trigger phase separation in aqueous
           alcohol'
    • Authors: Debashish Mukherji; Kurt Kremer
      Pages: 119 - 124
      Abstract: Short chain alcohols, such as methanol and ethanol, are fairly well miscible in water over full mixing ratios. Moreover, when poly(N-isopropylacrylamide) is added in the same mixtures, the solution phase separates at low alcohol concentrations. From the fundamental understanding of phase separation within the mean-field picture, we can expect interaction parameter χ between water and alcohol to be significantly larger than unity. On the contrary, however, χ remains invariant and close to zero over full mixing ratios of aqueous alcohol mixtures. Here, we show how the preferential binding of poly(N-isopropylacrylamide) with alcohols facilitates local phase separation without altering bulk solution χ.
      PubDate: 2017-09-01
      DOI: 10.1134/s181123821701009x
      Issue No: Vol. 59, No. 1 (2017)
       
  • Dimensions and conformations of macromolecules of N -methyl- N
           -vinylacetamide and N -methyl- N -vinylamine hydrochloride in solutions in
           a wide interval of ionic strength
    • Authors: O. A. Dommes; O. V. Okatova; A. A. Kostina; I. I. Gavrilova; E. F. Panarin; G. M. Pavlov
      Pages: 125 - 132
      Abstract: Fractions of the copolymer of N-methyl-N-vinylacetamide and N-methyl-N-vinylamine hydrochloride containing 15.7 ± 0.5% of charged units are obtained by radical polymerization, fractionation, and hydrolysis. Viscous flow, velocity sedimentation, and translational diffusion of their dilute solutions are studied in 0.2 M NaCl. Viscosimetric studies are also carried out in a wide range of ionic forces: from the minimum (~10–6 mol/L) to the maximum (6 mol/L). The hydrodynamic volumes and equilibrium rigidity of the copolymer under study are compared with the data obtained earlier for an uncharged homopolymer and a copolymer with a higher linear charge density (~44% of charged units) in solutions with different ionic strength. The correspondence of the values obtained to the theories of Odijk, Skolnik, and Fixman (OSF) as well as Dobrynin is discussed.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010039
      Issue No: Vol. 59, No. 1 (2017)
       
  • NMR paramagnetic probing of polymer solutions using manganese(II) ions
    • Authors: R. R. Amirov; E. A. Burilova; Yu. I. Zhuravleva; A. V. Zakharov; A. B. Ziyatdinova
      Pages: 133 - 140
      Abstract: Nuclear magnetic relaxation studies show that manganese(II) ions can serve as paramagnetic probes for investigation of aqueous solutions of polyelectrolytes (polystyrene sulfonate and polyethylenimine) and their mixtures. The analysis of the measured rates of spin–lattice (R 1) and spin–spin (R 2) relaxations reveals the differences in the binding character of manganese(II) ions with polystyrene sulfonate and polyethylenimine. In a mixture of the polymers in acidic and neutral media, manganese(II) forms two types of ternary complexes. Using the suggested method for definition of the hydration degree of a coordination sphere of the bound probe ions, the number of water molecules in the first sphere of the polymer-bound manganese(II) ions is found on the basis of the value of the R 2/R 1 ratio.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010015
      Issue No: Vol. 59, No. 1 (2017)
       
  • General trends in concentration and temperature behavior of equivalent
           conductance of N,N -diallylammonium polymers aqueous solutions: Effect of
           counterion nature and amine structure
    • Authors: L. M. Timofeeva; I. V. Balakaeva; A. S. Lileev; Yu. A. Simonova; A. K. Lyashchenko
      Pages: 141 - 148
      Abstract: The specific and equivalent conductivity of the diluted aqueous solutions of diallyammonium polyelectrolytes, initial monomers (N,N-diallylammonium trifluoroacetate, N,N-diallyl-N-methylammonium trifluoroacetate, N,N-diallyl-N,N-dimethylammonium chloride), and also potassium trifluoroacetate and trifluoroacetic acid solutions are studied. The limiting ionic mobility of diallylammonium cations and trifluoroacetate anion are found. The regularities of concentration changes in the equivalent conductance of polyelectolytes solutions are established. The degree of dissociation of diallyammonium polymers is shown to depend both on the counterion nature and on the amine structure.
      PubDate: 2017-09-01
      DOI: 10.1134/s1811238217010131
      Issue No: Vol. 59, No. 1 (2017)
       
  • Dear readers!
    • Authors: A. N. Ozerin; J. M. Kenny
      Pages: 1 - 1
      PubDate: 2016-09-01
      DOI: 10.1134/s1811238216010094
      Issue No: Vol. 58, No. 1 (2016)
       
  • Carbon plastics based on thermoplastic polyimide binders modified with
           nanoparticles
    • Authors: V. E. Yudin; V. M. Svetlichnyi
      Pages: 16 - 25
      Abstract: Polyimides (PIs) crystallized from melts are promising thermally stable, heat-resistant plastics with high destruction viscosities. Nanocomposites that in turn serve as matrixes for carbon plastics can be obtained on the basis of PIs filled with carbon nanoparticles of various structures and morphologies. The presence of the composite-in-composite structure gives rise to the enhancement of dissipation properties of the polymer matrix in particular and to an increase in the crack resistance of the carbon plastic in general.
      PubDate: 2016-09-01
      DOI: 10.1134/s1811238216010124
      Issue No: Vol. 58, No. 1 (2016)
       
  • Polymer composite materials: Technologies and applications
    • Authors: Yu. V. Antipov; A. A. Kul’kov; N. V. Pimenov
      Pages: 26 - 37
      Abstract: The physicomechanical properties of polymer composites based on aramide fibers that are obtained by the wet-spinning technique with the use of epoxy binders are discussed. The chemical structures of reinforcing fibers and components of epoxy binders; the microstructures, surface structures, and some properties of aramide fibers; and the processes of manufacturing high-strength reinforced composites on their basis are described. Some product samples made of these composites are presented. The investigated reinforcing materials possess high tensile strengths and tensile moduli, which make it possible to obtain products with a high level of operational characteristics on their basis.
      PubDate: 2016-09-01
      DOI: 10.1134/s181123821601001x
      Issue No: Vol. 58, No. 1 (2016)
       
  • Synthesis and properties of nanocomposite materials based on
           ultra-high-molecular-weight polyethylene and graphite nanoplates
    • Authors: P. N. Brevnov; G. R. Kirsankina; A. S. Zabolotnov; V. G. Krasheninnikov; V. G. Grinev; N. G. Berezkina; E. A. Sinevich; M. A. Shcherbina; L. A. Novokshonova
      Pages: 38 - 49
      Abstract: A method for the synthesis of nanocomposite materials based on ultra-high-molecular-weight polyethylene and graphite nanoplates via polymerization filling is developed. Polyethylene formed during the synthesis evenly coats individual nanoplates; as a result, there is a uniform distribution of graphite nanoplates in the polymeric matrix. It is shown that the introduction of graphite nanoplates results in significant increases of the elastic modulus and deformation heat resistance and causes a sharp decrease in the gas permeability of the material.
      PubDate: 2016-09-01
      DOI: 10.1134/s1811238216010021
      Issue No: Vol. 58, No. 1 (2016)
       
 
 
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