Macromolecular Materials and Engineering

Cover image for Vol. 298 Issue 1

January 2013

Volume 298, Issue 1

Pages 3–126

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Editorial
    6. Review
    7. Communications
    8. Full Papers
    1. You have free access to this content
      Macromol. Mater. Eng. 1/2013

      Reika Sakai, Baiju John, Masami Okamoto, Jukka V. Seppälä, Jayasheelan Vaithilingam, Husnah Hussein and Ruth Goodridge

      Version of Record online: 7 JAN 2013 | DOI: 10.1002/mame.201370001

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      Front Cover: Tissue engineering scaffolds prepared by the polymerization of crosslinked PLA possess excellent pore connectivity, morphology, structural stability and biodegradability. These thermoset PLA scaffolds are free of bioceramics, and are suited for the repair and regeneration of bone tissues. Further details can be found in the article by R. Sakai, B. John, M. Okamoto,* J. V. Seppälä, J. Vaithilingam, H. Hussein, and R. Goodridge on page 45.

  2. Masthead

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Editorial
    6. Review
    7. Communications
    8. Full Papers
    1. Macromol. Mater. Eng. 1/2013

      Version of Record online: 7 JAN 2013 | DOI: 10.1002/mame.201370002

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Editorial
    6. Review
    7. Communications
    8. Full Papers
    1. You have free access to this content
      Macromol. Mater. Eng. 1/2013 (pages 3–6)

      Version of Record online: 7 JAN 2013 | DOI: 10.1002/mame.201370003

  4. Editorial

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Editorial
    6. Review
    7. Communications
    8. Full Papers
    1. You have free access to this content
  5. Review

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Editorial
    6. Review
    7. Communications
    8. Full Papers
    1. Nano- and Microfibrillar Single-Polymer Composites: A Review (pages 9–32)

      Stoyko Fakirov

      Version of Record online: 1 NOV 2012 | DOI: 10.1002/mame.201200226

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      The concept of single-polymer composites helps to solve the main problems of composite science and technology: (i) poor interfacial adhesion, (ii) environmental problems, and (iii) dispersion, because in SPCs the matrix and the reinforcement are of the same chemical composition. In addition, SPCs demonstrate impressive mechanical performance.

  6. Communications

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Editorial
    6. Review
    7. Communications
    8. Full Papers
    1. Manufacturing of Surface Relief Structures in Moving Substrates Using Photoembossing and Pulsed-Interference Holography (pages 33–37)

      Olivier T. Picot, Rafael Alcalá, Carlos Sánchez, Mian Dai, Nanayaa F. Hughes-Brittain, Dirk J. Broer, Ton Peijs and Cees W. M. Bastiaansen

      Version of Record online: 13 JUN 2012 | DOI: 10.1002/mame.201100433

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      A new route to roll-to-roll surface patterning is demonstrated. Surface relief structures are obtained on a photoresist combining photoembossing and pulsed interference holography. The relief height of the structures is compared between films obtained using static and moving substrates during the exposure step.

    2. New Insights into Fatigue Crack Growth in Graphene-Filled Natural Rubber Composites by Microfocus Hard-X-Ray Beamline Radiation (pages 38–44)

      Ning Yan, Hesheng Xia, Yanhu Zhan and Guoxia Fei

      Version of Record online: 13 JUL 2012 | DOI: 10.1002/mame.201200044

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      It is demonstrated that graphene can have opposite effects on the crack growth resistance of NR: the inclusion of graphene accelerates the crack growth at lower fatigue strains but retards it at higher strains. Using microfocus hard-X-ray diffraction beamline detection, the fatigue crack growth resistance is correlated to the improved strain-induced crystallization.

  7. Full Papers

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Editorial
    6. Review
    7. Communications
    8. Full Papers
    1. Fabrication of Polylactide-Based Biodegradable Thermoset Scaffolds for Tissue Engineering Applications (pages 45–52)

      Reika Sakai, Baiju John, Masami Okamoto, Jukka V. Seppälä, Jayasheelan Vaithilingam, Husnah Hussein and Ruth Goodridge

      Version of Record online: 7 MAY 2012 | DOI: 10.1002/mame.201100436

      Thumbnail image of graphical abstract

      Tissue engineering scaffolds based on the polymerization of crosslinked polylactide (PLA) are fabricated and their pore connectivities, morphologies, and structural stabilities are analyzed. In vitro studies are conducted to analyze the biocompatibility and biodegradability of the scaffolds. These PLA thermoset scaffolds are best suited for bone tissue engineering applications.

    2. Simultaneous Free-Radical and Addition Miniemulsion Polymerization: Effect of the Chain Transfer Agent on the Microstructure of Polyurethane-Acrylic Pressure-Sensitive Adhesives (pages 53–66)

      Aitziber Lopez, Yuri Reyes, Elise Degrandi-Contraires, Elisabetta Canetta, Costantino Creton, Joseph L. Keddie and José M. Asua

      Version of Record online: 20 JUN 2012 | DOI: 10.1002/mame.201100390

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      Hybrid PU-acrylic adhesives are synthesized by simultaneous free-radical and addition miniemulsion polymerization, modifying the acrylic backbone with a chain transfer agent. The internal structure of the hybrid polymers is determined by combining experiments and computer simulation, and it is correlated with the adhesive performance.

    3. Microencapsulation of Alkaline Salt Hydrate Melts for Phase Change Applications by Surface Thiol-Michael Addition Polymerization (pages 67–77)

      Daniela Platte, Uta Helbig, Ruth Houbertz and Gerhard Sextl

      Version of Record online: 26 APR 2012 | DOI: 10.1002/mame.201100338

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      Microencapsulation of salt hydrates with hybrid polymers interesting for phase change applications is reported. The employed surface Michael-type addition polymerization of thiol and acrylate results in best encapsulation performance for resins with acrylate excess ratios. The reaction mechanism is further investigated in terms of its step-growth nature in corresponding bulk polymerizations.

    4. Verification of Selected Key Assumptions for the Analysis of Depth-Sensing Indentation Data (pages 78–88)

      Erik Rettler, Johannes M. Kranenburg, Stephanie Hoeppener, Richard Hoogenboom and Ulrich S. Schubert

      Version of Record online: 17 JUL 2012 | DOI: 10.1002/mame.201200094

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      Indentation data may be skewed by several sources of error due to assumptions made in the application of the particular analysis model. Three main assumptions (predominantly elastic unloading, no influence of friction or adhesion occurs during tip-sample contact, no cracking of the material) are discussed as possible sources of error and methods to quickly verify the obtained data are proposed.

    5. Compounding of MWCNTs with PS in a Twin-Screw Extruder with Varying Process Parameters: Morphology, Interfacial Behavior, Thermal Stability, Rheology, and Volume Resistivity (pages 89–105)

      Shyam Sathyanarayana, Ganiu Olowojoba, Patrick Weiss, Burak Caglar, Bernadeth Pataki, Irma Mikonsaari, Christof Hübner and Frank Henning

      Version of Record online: 4 JUN 2012 | DOI: 10.1002/mame.201200018

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      Increasing the processing speed from 500 to 1100 rpm lowers the resistivity by 10 orders of magnitude in PS with 2 wt% MWCNTs. Variation in dispersion levels with compounding parameters correlates with enhancements in thermal stability and rheological behavior. Raman spectroscopy and calorimetry are employed to understand MWCNT/PS interactions.

    6. Core/Shell PBA/PMMA-PGMA Nanoparticles to Enhance the Impact Resistance of UV-Cured Epoxy Systems (pages 106–112)

      Mohamed Naguib, Sabrina Grassini and Marco Sangermano

      Version of Record online: 24 APR 2012 | DOI: 10.1002/mame.201200001

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      Crosslinked core/shell PBA/PMMA-PGMA particles are prepared and dispersed into a UV-curable epoxy resin in the range between 5 and 15 wt%. The presence of the particles does not modify the Tg of the cured materials, but an impact resistance enhancement is observed independent of the particle content.

    7. Dynamic and Transient Shear Start-Up Flow Experiments for Analyzing Nanoclay Localization in PP/PET Blends: Correlation with Microstructure (pages 113–126)

      Mehdi Entezam, Hossein Ali Khonakdar, Ali Akbar Yousefi, Seyed Hassan Jafari, Udo Wagenknecht and Gert Heinrich

      Version of Record online: 24 APR 2012 | DOI: 10.1002/mame.201100435

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      Clay localization is probed by analyzing changes in complex viscosity and storage modulus as well as changes in the power law index obtained by steady-state and transient shear start-up flow experiments. The results reveal that these rheological methods, particularly the oscillation mode, are valuable tools for studying clay localization in blend systems, in particular at high clay loading.

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