Macromolecular Materials and Engineering

Cover image for Vol. 298 Issue 6

June 2013

Volume 298, Issue 6

Pages 601–703

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    6. Communication
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      Macromol. Mater. Eng. 6/2013 (page 601)

      Xia Wang, Wen-Jing Zhang, Deng-Guang Yu, Xiao-Yan Li and Hao Yang

      Article first published online: 10 JUN 2013 | DOI: 10.1002/mame.201370018

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      Cover: A new strategy is proposed for the preparation of epoxy nanofibers from small molecules, which is based on the combination of coaxial electrospinning (for providing core/sheath nanofibers as templates), hot curing (for cross-linking within the core part), and selective removal of the sheath polymer. Further details can be found in the article by X. Wang,* W.-J. Zhang, D.-G. Yu,* X.-Y. Li, and H. Yang on page 664.

  2. Masthead

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    6. Communication
    1. Macromol. Mater. Eng. 6/2013 (pages 602–607)

      Article first published online: 10 JUN 2013 | DOI: 10.1002/mame.201370019

  3. Contents

    1. Top of page
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    3. Masthead
    4. Contents
    5. Full Papers
    6. Communication
    1. Macromol. Mater. Eng. 6/2013 (pages 603–606)

      Article first published online: 10 JUN 2013 | DOI: 10.1002/mame.201370020

  4. Full Papers

    1. Top of page
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    6. Communication
    1. UV-Cured Acrylic Conductive Inks for Microelectronic Devices (pages 607–611)

      Marco Sangermano, Alessandro Chiolerio, Giulio Marti and Paola Martino

      Article first published online: 6 AUG 2012 | DOI: 10.1002/mame.201200072

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      UV curable inks based on a PEGDA matrix and containing a dispersion of aqueous Ag NPs are prepared for the fabrication of inkjet printed resistors. The NPs dispersed in the polymeric matrix realize a percolating path by aligning themselves in chains, which results in a reduction of the percolation threshold. Thus, the resistivity is well beyond the dissipative range.

    2. High-Shear-Strength Waterborne Polyurethane/Acrylic Soft Adhesives (pages 612–623)

      Elise Degrandi-Contraires, Aitziber Lopez, Yuri Reyes, José M. Asua and Costantino Creton

      Article first published online: 28 AUG 2012 | DOI: 10.1002/mame.201200106

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      Hybrid urethane-acrylic lightly crosslinked polymer networks are prepared by a one-step miniemulsion polymerization. The controlled incorporation of polyurethane chains in the acrylic network and fine control of the network architecture permitted by the synthesis technique leads to exceptionally good shear resistance properties for a waterborne pressure-sensitive adhesive film.

    3. Effect of Maleic-Anhydride Grafting on the Physical and Mechanical Properties of Poly(L-lactic acid)/Starch Blends (pages 624–633)

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

      Article first published online: 14 AUG 2012 | DOI: 10.1002/mame.201200111

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      PLLA and starch are blended in different weight ratios in a one-step reactive compatibilization process using maleic anhydride and dicumyl peroxide as compatibilizer and initiator, respectively. The final blend with 80 wt% PLLA and 20 wt% starch shows the best thermomechanical properties with enhanced interfacial adhesion.

    4. Epoxy/BaTiO3 Light-Cured Composites as Organic Capacitors (pages 634–643)

      Marco Sangermano, Mariangela Lombardi, Andrea Guerriero, Galder Kortaberria, Inaki Mondragon, Fabrizio Pirri and Laura Montanaro

      Article first published online: 14 AUG 2012 | DOI: 10.1002/mame.201200130

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      Epoxy/BaTiO3 hybrid materials are prepared as promising candidates for organic capacitors. The hybrid system is cured by using camphorquinone and a iodonium salt through a free-radical promoted cationic polymerization using a long-wavelength tungsten halogen lamp. The cured films are fully characterized.

    5. New Polymer Materials for Steel/Polymer/Steel Laminates in Automotive Applications (pages 644–652)

      Florence Avril, Roland Rahmé, Marjolaine Doux, Didier Verchere, Daniel Sage and Philippe Cassagnau

      Article first published online: 27 AUG 2012 | DOI: 10.1002/mame.201200058

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      A structure is reported that provides thermal insulation, is weight saving, impact resistant, and exhibits damping properties. The process for making the steel/polymer/steel laminate, the adhesion polymer/galvanized steel and rheological properties of the polymer film (yield stress fluid) are the key parameters to obtain and to control such structures.

    6. Design and Characterization of a Bicomponent Melt-Spun Fiber Optimized for Artificial Turf Applications (pages 653–663)

      Rudolf Hufenus, Christian Affolter, Martin Camenzind and Felix A. Reifler

      Article first published online: 24 AUG 2012 | DOI: 10.1002/mame.201200088

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      An artificial turf made of PA and PE combined in a bicomponent fiber minimizes the risk of skin abrasion without cut-back in resilience. The PA core ensures that the fiber recovers after being bent, while the PE sheath prevents injury when players slide on the synthetic turf. The optimum cross-section is assessed by numeric simulation and validated by melt-spinning of respective filaments.

    7. Epoxy Resin Nanofibers Prepared Using Electrospun Core/Sheath Nanofibers as Templates (pages 664–669)

      Xia Wang, Wen-Jing Zhang, Deng-Guang Yu, Xiao-Yan Li and Hao Yang

      Article first published online: 19 SEP 2012 | DOI: 10.1002/mame.201200174

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      A new strategy is proposed for the preparation of EP nanofibers from little molecules that uses a combination of coaxial electrospinning (which provides core/sheath nanofibers as templates), hot curing (for crosslinking within the templates owing to their microconfinement effect), and selective removal of the sheath filament firming matrix.

    8. Effects of Carbon Nanoreinforcements of Different Shapes on the Mechanical Properties of Epoxy-Based Nanocomposites (pages 670–678)

      Ehsan Alishahi, Shahin Shadlou, Saeed Doagou-R and Majid Reza Ayatollahi

      Article first published online: 30 AUG 2012 | DOI: 10.1002/mame.201200123

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      The effects of carbon nanoreinforcements of different shapes including spherical (ND) and cylindrical fibers (CNT and CNF), and platelets (GO) on the mechanical and fracture properties of epoxy-based nanocomposites are studied. The ND nanoparticles show higher improvements in Young's modulus and tensile strength, whereas GO platelets lead to a higher enhancement of fracture toughness.

    9. A Green Route for the Preparation of Aliphatic Polyesters via Lipase-catalyzed Prepolymerization and Low-temperature Postpolymerization (pages 679–689)

      Stamatina N. Vouyiouka, Evangelos Topakas, Adamantia Katsini, Constantine D. Papaspyrides and Paul Christakopoulos

      Article first published online: 25 SEP 2012 | DOI: 10.1002/mame.201200188

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      A new “green” polymerization cycle is proved to be efficient for the preparation of partially renewable aliphatic polyesters based on 1,8-octanediol and biobased long-chain diacids, 1,12-dodecanedioic and 1,14-tetradecanedioic acid. It involves lipase-catalyzed prepolymerization combined with low-temperature postpolymerization. The polyester's conformational characteristics, such as thermal properties, are defined as a function of monomer composition.

    10. High-Mechanical-Strength Flame-Retardant Nanocomposites Based on Novel Al(III)- and Zr(IV)-Melamine Phosphates and Sulfates (pages 690–698)

      Hazem Khalil, Hans-Jürgen Gläsel and Michael R. Buchmeiser

      Article first published online: 25 SEP 2012 | DOI: 10.1002/mame.201200168

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      Organometallic nanoparticles based on Al(III) and Zr(IV) melamine phosphate and melamine sulfate derivatives, respectively, concomitantly improve the flame retardant properties and the surface hardness, Martens hardness, and storage modulus of acrylate-based coatings.

  5. Communication

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    6. Communication
    1. Characterization of Thiol-Ene Crosslinked PEG Hydrogels (pages 699–703)

      Michael W. Toepke, Nicholas A. Impellitteri, Jeffrey M. Theisen and William L. Murphy

      Article first published online: 19 SEP 2012 | DOI: 10.1002/mame.201200119

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      The chemical and mechanical characteristics of the extracellular matrix play a key role in determining cellular behavior, and synthetic materials are being developed to mimic these qualities. Thiol-ene crosslinked PEG hydrogels are shown to achieve a broad range of mechanical properties, and a method for bonding hydrogel layers is used to create a microfluidic device (inset).

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