Polymer International

Cover image for Vol. 61 Issue 3

March 2012

Volume 61, Issue 3

Pages 337–484

  1. In Focus: Editorial

    1. Top of page
    2. In Focus: Editorial
    3. In Focus: Reviews
    4. Research Articles
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  2. In Focus: Reviews

    1. Top of page
    2. In Focus: Editorial
    3. In Focus: Reviews
    4. Research Articles
    1. Organic solar cell materials and active layer designs—improvements with carbon nanotubes: a review (pages 342–354)

      Bernard Ratier, Jean-Michel Nunzi, Matt Aldissi, Thomas M Kraft and Erwin Buncel

      Article first published online: 5 JAN 2012 | DOI: 10.1002/pi.3233

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      The active layer optimization of polymer solar cells, materials and cells design, incorporation of carbon nanotubes, are reviewed. Dispersion and orientation of the nanotubes in the organic matrix are discussed to propose an ideal model polymer solar cell.

    2. Solid-state dye-sensitized and bulk heterojunction solar cells using TiO2 and ZnO nanostructures: recent progress and new concepts at the borderline (pages 355–373)

      Johann Bouclé and Jörg Ackermann

      Article first published online: 23 SEP 2011 | DOI: 10.1002/pi.3157

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      We review the recent progress in the field of hybrid solar cells based on metal oxide nanostructures and organic dyes or conjugated polymers. The discussion focuses specifically on TiO2 and ZnO metal oxides, and both solid-state dye-sensitized solar cells and hybrid polymer/metal oxide heterojunctions. Finally, novel mixed device concepts at the borderline are reviewed.

    3. Organic transistors and phototransistors based on small molecules (pages 374–389)

      Bruno Lucas, Thierry Trigaud and Christine Videlot-Ackermann

      Article first published online: 7 DEC 2011 | DOI: 10.1002/pi.3213

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      This review focuses on recently synthesized p- or n-type organic semiconductors suitable for solution-processed and/or air-stable transistors. The recent results offer to such organic compounds various opportunities in applications.

    4. Recent advances in solid-state organic lasers (pages 390–406)

      Sébastien Chénais and Sébastien Forget

      Article first published online: 12 OCT 2011 | DOI: 10.1002/pi.3173

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      This review of organic solid-state lasers draws a picture of the field as it appears to the authors at the beginning of 2011, emphasizing the latest advances and trends, particularly in the field of device physics.

  3. Research Articles

    1. Top of page
    2. In Focus: Editorial
    3. In Focus: Reviews
    4. Research Articles
    1. New calix[4]arenedimethacrylate derivatives for dental composites (pages 407–412)

      Monir Tabatabai, Bernd Garska, Urs Fischer, Norbert Moszner, Andreas Utterodt and Helmut Ritter

      Article first published online: 5 JAN 2012 | DOI: 10.1002/pi.3208

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      Calix[4]arenedimethacrylates act as crosslinking agents for dental composite materials. The mechanical and thermal properties and the shrinkage behaviour of these dental composites are analysed.

    2. Hydrophobically modified poly[(divinyl ether)-co-(maleic anhydride)]: interactions with cyclodextrin derivatives and hydrogel formation (pages 413–417)

      Dominika B. Bernert, Indra Böhm, Kathrin Isenbügel, Lisa Schönenberg and Helmut Ritter

      Article first published online: 5 JAN 2012 | DOI: 10.1002/pi.3216

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      Hydrophobically modified DIVEMA and its physicochemical properties are described and analyzed. In combination with polymeric CD novel hydrogels via host-guest assembly were achieved.

    3. Poly(L-lactic acid) with added α-tocopherol and resveratrol: optical, physical, thermal and mechanical properties (pages 418–425)

      Sung Wook Hwang, Jin Kie Shim, Susan EM Selke, Herlinda Soto-Valdez, Laurent Matuana, Maria Rubino and Rafael Auras

      Article first published online: 5 JAN 2012 | DOI: 10.1002/pi.3232

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      The presence of α-tocopherol and resveratrol into poly(L-lactic acid) (PLLA) films plasticized the PLLA matrix and enhanced the mechanical properties and the melt viscosity of the PLLA/antioxidant films.

    4. Polymerizable ionic liquids for the preparation of polystyrene/clay composites (pages 426–433)

      Andrea Pucci, Vincenzo Liuzzo, Bernardo Melai, Christian Silvio Pomelli and Cinzia Chiappe

      Article first published online: 17 JAN 2012 | DOI: 10.1002/pi.4146

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      Thermally stable and transparent exfoliated polystyrene (PS) composites were prepared by in situ intercalative polymerization of styrene containing suspended montmorillonite (MMT) functionalized with polymerizable imidazolium-based ionic liquids.

    5. Understanding the mechanical and biodegradation behaviour of poly(hydroxybutyrate)/rubber blends in relation to their morphology (pages 434–441)

      Patrícia S. Calvão, Jean-Marc Chenal, Catherine Gauthier, Nicole R. Demarquette, Agnès Bogner and Jean Yves Cavaille

      Article first published online: 22 DEC 2011 | DOI: 10.1002/pi.3211

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      A droplet type morphology was obtained for P(3HB)/PVB blends whereas P(3HB)/EPDM blends presented some extent of co-continuous morphology. The addition of elastomer increased the biodegradation rate of P(3HB), especially in the case of EPDM. It is assumed that the size and morphology of the rubbery domains induces a geometrical modification of the “erosion front”. That leads to an increase of the interface between P(3HB) phase and the degradation medium and consequently to an apparent faster biodegradation kinetic of PHB/rubber blends.

    6. Stereocomplex formation between poly(L-lactic acid) and poly(D-lactic acid) with disproportionately low and high molecular weights from the melt (pages 442–450)

      Hideto Tsuji and Leevameng Bouapao

      Article first published online: 16 DEC 2011 | DOI: 10.1002/pi.3219

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      The presence of low-molecular-weight poly(L-lactic acid) facilitates stereocomplexation, which dominates and accelerates crystallization. The nucleating mechanisms were identical for poly(D-lactic acid) fractions of 10–50%.

    7. Ionic polymers with tunable liquid-crystalline properties (pages 451–457)

      Gorazd Šebenik, Miroslav Huskić, Ema Žagar and Majda Žigon

      Article first published online: 2 NOV 2011 | DOI: 10.1002/pi.3202

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      Side-chain polyesters were synthesized from various N-alkyldiethanolamines and transformed into polyester hydrochlorides using different amounts of HCl (20–100 mol%). By simply varying the degree of protonation we were able to tune the LC-isotropization temperature.

    8. Effect of bilayered stearate ion-modified Mg[BOND]Al layered double hydroxide on the thermal and mechanical properties of silicone rubber nanocomposites (pages 458–465)

      Bratati Pradhan, Suneel Kumar Srivastava, Anil Kumar Bhowmick and Anubhav Saxena

      Article first published online: 7 DEC 2011 | DOI: 10.1002/pi.3218

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      A significant improvement in mechanical and thermal properties has been achieved in stearate ion-modified Mg-Al layered double hydroxide-reinforced silicone rubber nanocomposites prepared by solution intercalation.

    9. γ-Butyrolactone-processable high-modulus poly(ester imide)s (pages 466–476)

      Masatoshi Hasegawa, Yuma Tanaka and Azumi Tominaga

      Article first published online: 10 NOV 2011 | DOI: 10.1002/pi.3199

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      A poly(ester imide) precursor with high transparency at 365 nm was polymerized in γ-butyrolactone. The diazonaphthoquinone-dispersed film provided a clear positive-tone pattern on development in an aqueous tetramethylammonium hydroxide solution. The cured film showed a very high modulus.

    10. Crystallization behavior and hydrophilicity of poly(vinylidene fluoride)/poly(methyl methacrylate)/poly(vinyl pyrrolidone) ternary blends (pages 477–484)

      Jing Cheng, Shichao Wang, Shuangjun Chen, Jun Zhang and Xiaolin Wang

      Article first published online: 17 OCT 2011 | DOI: 10.1002/pi.3185

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      Significant changes of the crystallinity, crystallization rate, crystal size, and homogeneity of PVDF are determined by the hydrogen bonding and dipole-dipole interactions of the ternary blend.