Macromolecular Materials and Engineering

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Recently Published Articles

  1. Strategies for High Quality Injection Moulding of Polymer Nanopillars

    Rasmus H. Pedersen, Qian Xu, John M. Stormonth-Darling and Nikolaj Gadegaard

    Article first published online: 27 AUG 2014 | DOI: 10.1002/mame.201400134

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    We show tunable reproduction of polymer nanostructures by injection moulding. Using a novel fabrication method to produce a master with a gradient in pattern height we conduct detailed investigations of the injection moulding process of nanopillar structures. Material choice and moulding parameters lead to optimization and control of the final result.

  2. Melt Processing and Characterization of Bionanocomposites Made from Poly(butylene succinate) Bioplastic and Carbon Black

    Michael Snowdon, Amar Kumar Mohanty and Manjusri Misra

    Article first published online: 26 AUG 2014 | DOI: 10.1002/mame.201400088

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    Now that biopolymers have entered the industrial marketplace, new advancements in biobased nanocomposites are underway. Using poly(butylene succinate) (PBS) and low volume percentages of carbon black filler, a thermal and electrically conductive plastic with good particle dispersion and increased mechanical performance may be obtained compared to conventional PBS.

  3. Structure Development of Low-Density Polyethylenes During Film Blowing: A Real-Time Wide-Angle X-ray Diffraction Study

    Martin van Drongelen, Dario Cavallo, Luigi Balzano, Giuseppe Portale, Iakovos Vittorias, Wim Bras, Giovanni C. Alfonso and Gerrit W. M. Peters

    Article first published online: 22 AUG 2014 | DOI: 10.1002/mame.201400161

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    Structure development of low-density polyethylenes during film blowing: a real-time wide-angle X-ray diffraction study. Blown film extrusion was combined with in-situ wide-angle X-ray diffraction at a synchrotron radiation beam line. The structure evolution was examined in terms of crystallinity and molecular orientation along the extrusion direction for different processing conditions. Three grades with different molecular properties were examined.

  4. Compatibilization of Protein Thermoplastics and Polybutylene Succinate Blends

    K. I. Ku-Marsilla and C. J. R. Verbeek

    Article first published online: 21 AUG 2014 | DOI: 10.1002/mame.201400141

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    Poly-2-ethyl-2-oxazoline (PEOX) and polymeric methylene diphenyl diisocyanate (pMDI) are good compatibilizers for blends of Novatein Thermoplastic Protein (NTP) and poly(butylene succinate) (PBS) prepared using reactive extrusion. PEOX can improve NTP dispersion in PBS and in conjunction with pMDI improve water resistance and tensile strength, exceeding that of pure NTP or PBS.

  5. Fabrication of Tubular Scaffolds with Controllable Fiber Orientations Using Electrospinning for Tissue Engineering

    Ki-Young Jeong, Dong-Hyun Paik and Sung-Wook Choi

    Article first published online: 20 AUG 2014 | DOI: 10.1002/mame.201400178

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    The fibrous tubular scaffolds with controllable fiber orientations are fabricated by changing the rotational speed of the rotating drum and the design of a conductive wire. The parallel or orthogonal fiber orientations are achieved using an orthogonal or parallel conductive wire, respectively. The orientation morphology of the fibrous structure can control the direction of cell stretching during proliferation.