Macromolecular Materials and Engineering

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Recently Published Articles

  1. 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.

  2. 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.

  3. 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.

  4. Characterization of Viscoelasticity and Self-Healing Ability of VHB 4910

    Fan Fan and Jerzy Szpunar

    Article first published online: 18 AUG 2014 | DOI: 10.1002/mame.201400122

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    Self-healing materials is a hot topic at present; however, the lack of strength limits the application of such materials. VHB 4910 is heavily studied on the application of dielectric actuator due to its electro-activity. The self-recovery and self-healing mechanism and ability are studied in this paper. This study is believed to stimulate more research and application on this material.

  5. Self-Assembly of Poly(3-hexylthiophene)-block-poly(γ-benzyl-L-glutamate) within Solution-Cast Films and Nanofibers

    Alda Kapllani, Caitlin Dillard, Katherine E. Washington, Michael C. Biewer, Mihaela C. Stefan and Vibha Kalra

    Article first published online: 18 AUG 2014 | DOI: 10.1002/mame.201400148

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    Transmission electron microscopy image of solution cast film of poly(3-hexylthiophene)-b-poly(γ-benzyl-L-glutamate), a conjugated rod–rod diblock copolymer exhibiting true hierarchical self-assembly; (i) block copolymer self-assembly with a domain spacing of ≈11 nm and (ii) molecular crystalline ordering in individual blocks with domain spacing in the sub-nm range. Copyright WILEY-VCH Verlag GmbH & Co. KGaA, 69469 Weinheim, Germany, 2013.

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