International Polymer Science and Technology

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1 Page 1 of 11 SMITHERS GROUP MENU International Polymer Science and Authors Instructions for Authors Access Logged into International Polymer Science and. Click Here To Logout Back Search Search Journals Applied Polymer Composites Title: Processing of natural fibres in an internal mixer opens up new perspectives for thermoplastic lightweight materials in the automotive industry Page Range: p.t/1-t/4 Author(s): Limper A; Fischer K The increasing interest in using natural Cellular Polymers International Polymer Science & Polymers & Polymer Composites Polymers from Renewable Resources Progress in Rubber, Plastics & Recycling

2 Page 2 of 11 fibre-reinforced thermoplastics for injection moulding of vehicle interior components is examined. Challenges in natural fibre processing are considered and the discontinuous operation of internal mixers is shown to allow greater flexibility in process management. Results of preliminary experiments on lightweight thermoplastic materials with natural fibre reinforcement are discussed. Specific materials tested had a PP homopolymer matrix (in some formulations with up to 10% of the PP being replaced by a propylene-based elastomer) and wt % of wood, white cellulose, Tencel or flax fibres.4 refs. (Article translated from Gummi Fasern Kunststoffe, 67, no. 9, 2014, pp ) Title: Reversible electrophoretic adhesion of hydrogels and fabrication of 3D materials Page Range: p.t/5-t/10 Author(s): Asoh T A review is presented of the literature on the electrophoretic adhesion of stimuliresponsive polymer hydrogels, the relation between molec.wt. of the polymer electrolyte and swelling ratio of gel in the electrophoretic adhesion of hydrogels, the reversibility of electrophoretic adhesion,

3 Page 3 of 11 and freeform and reconstructable hydrogel materials. The electrophoretic adhesion of hydrogels is shown to be a gel adhesion technique in which interaction is induced by concentrating polymer chains by electrophoresis at the interface between two gels that do not adhere when simply brought into contact. The process is reversible, the gels easily being parted by application of a reverse field. In the light of the results obtained, assembly by adhesion for hydrogels which are otherwise difficult to process is proposed and it is shown that it is possible to form three-dimensional hydrogel constructs from hydrogel components. Possible applications include supports for drug delivery systems and scaffold materials for tissue regeneration. 24 refs. (Article translated from Nippon Gomu Kyokaishi, no. 6, 2014, pp ) Title: Comparative investigations of the influence of the type of catalytic system and the polymerisation conditions of isotactic polypropylene on the yield and properties of atactic polypropylene Page Range: p.t/11-t/14 Author(s): Dakhnovskaya E V; Nekhoroshev A V; Nekhoroshev V P A comparative investigation was made of

4 Page 4 of 11 the influence of the type of catalytic system and the polymerisation conditions of isotactic PP on the yield and properties of atactic PP. An increase in the molec.wt. of the atactic PP and its softening points was found, together with reductions in its polydispersity index. Changes in the structure of atactic PP, such as the molec.wt. characteristics, composition and distribution of branches, were established. The presence of terminal double bonds, increase in the crystallinity of the structure of the polymer, and the existence of branching of the polymer chain of the atactic PP, appearing in the form of short side alkyl groups C"4-C"5 in the main chain, were demonstrated experimentally. 8 refs. (Article translated from Plasticheskie Massy, no. 7, 2013, pp 3-6) Title: Modification of epoxy binders with oligomeric silsesquioxanes Page Range: p.t/15-t/18 Author(s): Akopova T A; Osipchik V S; Olikhova Y V; Ivanov G A; Zhukov A F A study was made of the effect of oligomeric silsesquioxane with epoxy groups on the strength and thermophysical properties of epoxy resin binders. It was shown that the introduction of polyhedral

5 Page 5 of 11 oligomeric silsesquioxane in specific amounts made it possible to raise the strength characteristics and Tg. Composite materials based on modified binder with a higher yield temperature were obtained. 8 refs. (Article translated from Plasticheskie Massy, no. 7, 2013, pp 6-8) Title: Effect of small additions of 4-(4'- alkyloxybenzoyloxy)cinnamic acids on the properties of low-density polyethylene Page Range: p.t/19-t/22 Author(s): Kuvshinova S A; Potemkina O V; Novikov I V; Burmistrov V A; Koifman O I The melt flow indices of PE modified with industrial and liquid crystalline additives were determined. The additives studied were standard heat and light stabilisers (Benazol P and Irganox) and 4-(4'- alkyloxybenzoyloxy)cinnamic acids. The wetting angles of PE films by water and glycerine were measured and their tribological characteristics were assessed. The effect of the modifier on the properties of LDPE was examined. Experimental data are presented on changes in the melt flow index of LDPE with modifiers as functions of temperature and of load, on wetting angles and surface energies of films of LDPE containing the modifiers, and on friction

6 Page 6 of 11 coefficients and moments of the LDPE films in aqueous medium, in glycerine and in air. 11 refs. (Article translated from Plasticheskie Massy, no. 7, 2013, pp 9-11) Title: Longitudinal bending of polymer rods with account taken of creep strains and initial imperfections Page Range: p.t/23-t/25 Author(s): Litvinov S V; Klimenko E S; Kulinich I I; Yazyeva S B Polymeric materials are being used as bearing elements, such as polymer rods for the strengthening of suspended constructions. These rods undergo both elongation and compression, but polymeric materials exhibit the property of creep. An investigation was made of the loss of stability of polymer rods exposed to disturbances in the form of camber of the rod and eccentricity of load application. The Maxwell-Gurevich constraint equation was used to describe creep strains and an examination was made of the problem of creep of rods of epoxy resin and PMMA. 4 refs. (Article translated from Plasticheskie Massy, no. 7, 2013, pp 26-28)

7 Page 7 of 11 Title: Rheokinetics of a bisphenol A epoxy oligomer during curing in the presence of a solid filler surface Page Range: p.t/27-t/30 Author(s): Zarubina A Y; Trofimov A N; Simonov-Emel'yanov I D An investigation was made of the influence of model spherical particles, i.e. solid and hollow dressed and undressed glass microspheres, on the viscous characteristics of filled composites and on the rheokinetics of curing of epoxy oligomer-based binder ED-20 in their presence. It was established that the introduction of solid undressed glass spheres in a quantity of over 15 wt % slightly accelerated the curing process (by about 15%) of composites. For the first time, it was shown experimentally that the surface treatment of glass particles with a dressing agent containing terminal amine groups led to an increase in the curing rate as a result of chemical interaction of reaction groups of the dressing agent and epoxy oligomer. 16 refs. (Article translated from Plasticheskie Massy, no. 7, 2013, pp 32-34) Title: Dependence of the thermophysical properties of filled fluoroplastics on the

8 Page 8 of 11 temperature and concentration of fillers Page Range: p.t/31-t/33 Author(s): Zarichnyak Y P; Ivanov V A Measurements were conducted of the specific heat and thermal conductivity of composite materials based on a PTFE matrix with different volume fractions of disperse fillers, i.e. powders of coke, molybdenum disulphide and finely dispersed diamonds, in the temperature range K. Particular attention was paid to the properties of diamond-filled PTFE as a function of temperature and volume fraction of diamonds ( of the total mass of the specimen). The results obtained are presented and discussed. 6 refs. (Article translated from Plasticheskie Massy, no. 7, 2013, pp 35-37) Title: Development of conditions for the production of porous fibre composites using non-woven materials based on ultrafine fibres Page Range: p.t/35-t/39 Author(s): Lavrent'ev A V; Bokova E S; Kovalenko G M; Filatov I Y

9 Page 9 of 11 An investigation was made of the structure and properties of needle-punched nonwoven bases and nanofibrous materials produced by electrospinning. Synthetic materials were produced on a non-woven base (polyester/bicomponent fibre or polyamide/komitex), impregnated with a solution of polyester-urethane (PEU), with its subsequent structure formation by phase separation in a non-solvent. A study was conducted of the process of phase separation of a PEU solution in the structure of non-woven cloth. The presence of counterdiffusion fronts at the 'transparentcloudy' boundary when fibrous materials produced by electrospinning were used as the bases was established. The possibility of using these materials as a constituent element of synthetic leathers was demonstrated. 15 refs. (Article translated from Plasticheskie Massy, no. 7, 2013, pp 42-45) Title: Water vapour permeability of polyethylene packaging at different stages of granulated sugar storage Page Range: p.t/41-t/43 Author(s): Dedov A V

10 Page 10 of 11 An investigation was made of the dependence of the permeability of PE packaging for the storage of granular sugar on the storage time. The increase in the permeability of the packaging was a consequence of the mechanical action of sugar particles. Standardised storage conditions ensured the retention of diffusional water vapour permeability through stacked packaging. A model was proposed for calculating the coefficient of water vapour permeability through packaging for particular storage times. 1 ref. (Article translated from Plasticheskie Massy, no. 7, 2013, pp 46-47) Title: Properties of blends of recycled polyesters Page Range: p.t/45-t/50 Author(s): Sova N V; Savchenko B M; Pakharenko A V; Pakharenko V A The physicochemical and thermophysical properties of PETP/polycarbonate blends were examined. In order to study the compatibility and influence of the

11 Page 11 of 11 ingredients of the polymers on their properties, virgin and recycled PETP of grade 8200, virgin bottle-grade (branched structure of macromolecules) and discgrade (linear structure) polycarbonate, and recycled bottle-grade polycarbonate were chosen. The mechanisms of interaction between the components of polymer blends of different composition were investigated. The effect of transesterification was studied. 13 refs. (Article translated from Plasticheskie Massy, no. 7, 2013, pp 48-52) Products Services 2015 Smithers Rapra Cookies Sitemap %>

International Polymer Science and Technology

Page 1 of 11 SMITHERS GROUP MENU International Polymer Science and Authors Instructions for Authors Access Logged into International Polymer Science and. Click Here To Logout Back Search Search Journals