Polymer International

Cover image for Vol. 63 Issue 2

February 2014

Volume 63, Issue 2

Pages 165–376

  1. Perspective

    1. Top of page
    2. Perspective
    3. Mini-reviews
    4. Research Articles
    1. Macromolecular and supramolecular chirality: a twist in the polymer tales (pages 165–171)

      Alexander G de Bruin, Michele E Barbour and Wuge H Briscoe

      Version of Record online: 19 NOV 2013 | DOI: 10.1002/pi.4639

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      Introducing chiral hierarchical structures in polymer materials and polymer surfaces unlocks additional properties and functionalities in a range of applications in nanoscience, biomedicine and biomaterials. (All M.C. Escher works © 2013 The M.C. Escher Company - the Netherlands. All rights reserved. Used by permission. www.mcescher.com.)

  2. Mini-reviews

    1. Top of page
    2. Perspective
    3. Mini-reviews
    4. Research Articles
    1. On the failure of silicone breast implants: new insights by mapping the mechanical properties of implant shells (pages 172–178)

      Dirk W Schubert, Joachim Kaschta, Raymund E Horch, Bastian L Walter and Jonas Daenicke

      Version of Record online: 10 OCT 2013 | DOI: 10.1002/pi.4619

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      By means of statistical failure analysis (Weibull analysis) applied to a mapping of mechanical properties of silicone breast implants a clear separation according to product quality is obtained.

    2. Stereospecific polymerization of olefins with supported Ziegler − Natta catalysts (pages 179–183)

      Xiubo Jiang and Aihua He

      Version of Record online: 1 NOV 2013 | DOI: 10.1002/pi.4633

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      Supported Ziegler-Natta catalyst systems showed wide application in synthesis of stereoregular polyolefins

  3. Research Articles

    1. Top of page
    2. Perspective
    3. Mini-reviews
    4. Research Articles
    1. Clay-containing block copolymer nanocomposites with aligned morphology prepared by extrusion (pages 184–194)

      Danilo J. Carastan, Leice G. Amurin, Aldo F. Craievich, Maria do Carmo Gonçalves and Nicole R. Demarquette

      Version of Record online: 9 APR 2013 | DOI: 10.1002/pi.4480

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      Nanocomposites of cylindrical SEBS block copolymers and clay had their domains and nanoparticles aligned by extrusion. The presence of more polar functional groups greatly increases the degree of exfoliation.

    2. Dynamic mechanical behavior and nanostructure morphology of hyperbranched-modified polypropylene blends (pages 195–205)

      Morteza Ganjaee Sari, Norbert Stribeck, Siamak Moradian, Ahmad Zeinolebadi, Saeed Bastani, Stephan Botta and Ehsan Bakhshandeh

      Version of Record online: 5 APR 2013 | DOI: 10.1002/pi.4482

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      Time-resolved SAXS during melting and recrystalization showed the dendritic domains bonds the crystal lamellae together that even in melting point parts of lamellae still exist and do not melt.

    3. A study of molecular weight regulation in polyethylene by titanium diolate catalysts (pages 206–213)

      Akshay Mehta, Gopal Tembe, Parimal Parikh and Girish Mehta

      Version of Record online: 18 MAR 2013 | DOI: 10.1002/pi.4484

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      Homogeneous titanium(IV) complexes derived from cyclohexanediol formulated as (OO)Ti(OPri)2 (1) were used as catalysts for polymerization of ethylene at high temperatures and pressures. In the presence of ethylaluminium sesquichloride co-catalyst, low-molecular-weight polyethylenes with narrow dispersities were obtained.

    4. Phase separation structure and interfacial properties of lattice-patterned liquid crystal–polymer composites prepared from multicomponent prepolymers (pages 214–220)

      Shi-Joon Sung, Eun-Ae Jung, Kyoseung Sim, Dae-Hwan Kim and Kuk Young Cho

      Version of Record online: 3 APR 2013 | DOI: 10.1002/pi.4485

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      Lattice-patterned liquid crystal (LC)–polymer composites were prepared using photoinduced phase separation. Structural and interfacial properties of the LC–polymer composites were closely related to the composition of multicomponent acrylate monomers used in composite formation.

    5. Diffusion of solvents in poly(vinyl acetate) and partially and fully hydrolyzed poly(vinyl alcohol) (pages 221–227)

      John M. Zielinski, Mourad Hamedi, Ida M. Balashova and Ronald P. Danner

      Version of Record online: 27 MAR 2013 | DOI: 10.1002/pi.4487

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      Diffusivities of methyl acetate, methanol, and water in poly(vinyl acetate), fully and partially hydrolyzed poly(vinyl alcohol) have been measured by capillary column inverse gas chromatography and/or gravimetric sorption and modeled.

    6. Influence of octyl substituted octakis(dimethylsiloxy)octasilsesquioxane on the morphology and thermal and mechanical properties of low density polyethylene (pages 228–236)

      Denis Mihaela Panaitescu, Adriana Nicoleta Frone, Constantin Radovici, Cristian Nicolae and François Xavier Perrin

      Version of Record online: 11 APR 2013 | DOI: 10.1002/pi.4488

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      The mechanism of POSS action during tensile deformation of polyethylene nanocomposites was investigated by AFM. POSS facilitates the slipping of polymer fibrils formed during cold drawing/stress hardening steps.

    7. Hairy fluorescent nanoparticles from one-pot click chemistry and atom transfer radical emulsion polymerization (pages 237–243)

      Fang Yao, Guan-Cang Yan, Li-Qun Xu, Guo-Dong Fu, Li-Hong Yin, Yue-Pu Pu and En-Tang Kang

      Version of Record online: 18 MAR 2013 | DOI: 10.1002/pi.4491

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      Well-defined hairy and crosslinked fluorescent nanoparticles with diameters in the range 70–220 nm were obtained from simultaneous copper-catalyzed alkyne–azide cycloaddition and atom transfer radical emulsion polymerization (ATREP).

    8. Synthesis and characterization of biodegradable linear–hyperbranched barbell-like poly(ethylene glycol)-supported poly(lactic-ran-glycolic acid) copolymers through direct polycondensation (pages 244–251)

      Dedai Lu, Pengxue Duan, Tao Liu, Juan Li, Ting'e Li and Ziqiang Lei

      Version of Record online: 20 MAR 2013 | DOI: 10.1002/pi.4494

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      A series of biodegradable linear–hyperbranched barbell-like poly(ethylene glycol)-supported poly(lactic-ran-glycolic acid) copolymers were successfully synthesized. Their structures, thermal properties, degradation rates and self-assembly behaviors were investigated in detail.

    9. Investigation of charge transport properties in conducting copolymers of aniline with 3-aminobenzenesulfonic acid for their applications as antistatic encapsulation materials blended with low-density polyethylene (pages 252–257)

      Amarjeet Kaur, Ritu Saharan and Sundeep K Dhawan

      Version of Record online: 26 APR 2013 | DOI: 10.1002/pi.4495

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      Investigations of the antistatic properties of various poly[(3-aminobenzenesulfonic acid)-co-aniline] (poly(3-ABSA-co-AA)) copolymers and doped with p-toluenesulfonic acid (PTSA) and at loading levels of 1 and 2 wt% in low-density polyethylene (LDPE) suggest that the electrostatic charge dissipative properties may depend upon the conductivity of the material which is highest for the copolymers.

    10. Fabrication of ferrogels using different magnetic nanoparticles and their performance on protein adsorption (pages 258–265)

      Jimena S. Gonzalez, Paula Nicolás, María Luján Ferreira, Marcelo Avena, Verónica L. Lassalle and Vera A. Alvarez

      Version of Record online: 26 APR 2013 | DOI: 10.1002/pi.4498

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      Ferrogels of polyvinilalcohol and magnetic nanoparticles (NPs) were synthesized using different kinds of magnetic particles. Biomaterixsals obtained were found suitable for adsorption of a model protein.

    11. Effects of Fe2+ ions on morphologies, microstructures and mechanical properties of electrospun nylon-6 nanofibers (pages 266–272)

      Naotaka Kimura, Byoung-Suhk Kim and Ick-Soo Kim

      Version of Record online: 9 APR 2013 | DOI: 10.1002/pi.4500

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      The crystallinity and mechanical properties of the nylon-6/FeCl2 nanofibers were significantly influenced by the Fe2+-ion additives. Unique morphological features, such as spider-net like morphologies, were observed at higher ϕFe (≥ 15 wt%).

    12. Interpenetrating polymer network structured thermosets prepared from epoxidized soybean oil/diglycidyl ether of bisphenol A (pages 273–279)

      Seah Guan Tan, Zulkifli Ahmad and Wen Shyang Chow

      Version of Record online: 8 APR 2013 | DOI: 10.1002/pi.4501

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      Miscible ESO/DGEBA blends with a single glass transition temperature value were produced. Blending of ESO and DGEBA proved to be a good strategy to develop ESO thermoset with higher performance.

    13. Electrochemical synthesis of poly(indole-co-thiophene) on low-nickel stainless steel and its anticorrosive performance in 0.5 mol L−1 H2SO4 (pages 280–289)

      Dhanaraj Gopi, Ramanathan Saraswathy, Louis Kavitha and Dae-Kyeong Kim

      Version of Record online: 3 APR 2013 | DOI: 10.1002/pi.4503

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      A poly(indole-co-thiophene) (poly(In-co-Th)) coating, optimized as regards the influence of monomer concentration and scan rate adopted during its synthesis, showed good corrosion protection of low-nickel stainless steel in an acidic environment.

    14. Effect of nanofiller concentration on conductivity and dielectric properties of poly(ethylene oxide)–poly(methyl methacrylate) polymer electrolytes (pages 290–295)

      Poonam Sharma and Dinesh K Kanchan

      Version of Record online: 9 MAY 2013 | DOI: 10.1002/pi.4504

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      When containing 4 wt% Al2O3, a poly(ethylene oxide)–poly(methyl methacrylate) blend electrolyte film shows a smooth surface morphology (left-hand image) while clear aggregation is observed for a blend film with 5 wt% Al2O3 (right-hand image).

    15. Effects of annealing on the hierarchical crystalline structures and mechanical properties of injection-molded bars of high-density polyethylene (pages 296–306)

      Long Wang, Quan-Ping Zhang, Jia-Hui Wang, Bin Yang, Ming-Bo Yang and Jian-Ming Feng

      Version of Record online: 20 MAY 2013 | DOI: 10.1002/pi.4505

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      Annealing temperature can exert considerable influence on the spatial variation of the hierarchy structure as well as the mechanical properties of high-density polyethylene prepared by gas-assisted injection molding. The figure illustrates schematically a balance map of two mechanisms for lamellar thickening as a function of annealing temperature (Ta).

    16. Preparation and physicochemical performances of poly[(vinylidene fluoride)-co-hexafluoropropylene]-based composite polymer electrolytes doped with modified carbon nanotubes (pages 307–314)

      Wei Xiao, Xinhai Li, Huajun Guo, Zhixing Wang, Yan Li and Bo Yang

      Version of Record online: 12 APR 2013 | DOI: 10.1002/pi.4506

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      Composite polymer electrolytes doped with mixed-acid-modified carbon nanotubes show excellent physicochemical and electrochemical properties, and assembled coin cells containing the composite polymer electrolytes have good rate and cycle performances.

    17. Synthesis and characterization of a new family of photoactive liquid crystalline polyesters based on α-methylstilbene (pages 315–326)

      Bartosz Tylkowski, Krzysztof A Bogdanowicz, Veronica Ambrogi, Albena Lederer, Violetta Patroniak and Marta Giamberini

      Version of Record online: 17 APR 2013 | DOI: 10.1002/pi.4507

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      A family of liquid crystal copolyesters containing α-methylstilbene moieties and aliphatic or aromatic spacers were synthesized. They exhibited E–Z photoisomerization and increased wettability on photoirradiation.

    18. Transparent cyclic olefin copolymer composites (pages 327–332)

      Sunanda Roy, Tanya Das, Chee Yoon Yue and Xiao Hu

      Version of Record online: 9 MAY 2013 | DOI: 10.1002/pi.4511

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      High strength transparent COC/silica nanocomposites are fabricated by melt mixing process where the 3 wt.% nanosilica composite is found to be the best in all respect.

    19. Synthesis and characterization of novel adamantane-based copoly(aryl ether ketone)s with low dielectric constants (pages 333–337)

      Zhi Geng, Yaning Lu, Shuling Zhang, Xu Jiang, Pengfei Huo, Jiashuang Luan and Guibin Wang

      Version of Record online: 16 APR 2013 | DOI: 10.1002/pi.4515

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      A series of novel low-dielectric-constant adamantane-based copoly(aryl ether ketone)s with good thermal and mechanical properties were synthesized successfully via a side-chain grafting method.

    20. Thermal, mechanical and morphological properties of surface-modified montmorillonite-reinforced Viton rubber nanocomposites (pages 338–346)

      Ananda D Mali, Navinchandra G Shimpi and Satyendra Mishra

      Version of Record online: 19 APR 2013 | DOI: 10.1002/pi.4518

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      The effect of surface-modified montmorillonite (OMMT) on mechanical, thermal and morphological properties of Viton rubber nanocomposites is investigated. Due to the improved d-spacing of OMMT the properties of Viton rubber are found to be improved at 9 wt% loading, and subsequently become poorer especially at 12 wt% loading.

    21. Synthesis of vinyl end-capped polydimethylsiloxane by ring opening polymerization of octamethylcyclotetrasiloxane (D4) catalyzed by rare earth solid super acid SO42/TiO2/Ln3+ (pages 347–351)

      Xiongfa Yang, Qian Shao, Qing Fang, Linlin Yang, Cheng Cao, Zhaohui Ren, Lianbin Wu, Guoqiao Lai and Gaorong Han

      Version of Record online: 13 MAY 2013 | DOI: 10.1002/pi.4521

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      Rare earth solid super acids have been successfully developed to synthesize vinyl end-capped polydimethylsiloxane through ring opening polymerization of D4 end-capped with 1,1,3,3-tetramethyl-1,3-divinyldisiloxane.

    22. Organosoluble polyimides derived from asymmetric 2-substituted-and 2,2′,6-trisubstituted-4,4′-oxydianilines (pages 352–362)

      Jyh-Chien Chen, Jin-An Wu, Hui-Wen Chang and Ching-Yi Lee

      Version of Record online: 19 JUL 2013 | DOI: 10.1002/pi.4571

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      A concise method is reported for the preparation of asymmetric polyimides based on 2-substituted- and 2,2′,6-trisubstituted-4,4′-oxydianilines. Their structural asymmetry is evidenced using 1H NMR spectroscopy. Their solubility and thermal properties are reported.

    23. Blue fluorescent conductive poly(9,10-di(1-naphthalenyl)-2-vinylanthracene) homopolymer and its highly soluble copolymers with styrene or 9-vinylcarbazole (pages 363–376)

      Jianli Wang, Louis M Leung, Shu-Kong SO and Cyrus YH Chan

      Version of Record online: 22 JUL 2013 | DOI: 10.1002/pi.4574

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      High yield, high glass transition temperature, soluble and true blue-emitting vinyl copolymers were synthesized and characterized.

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