Macromolecular Materials and Engineering
Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Materials Science Weekly Newsletter
Recently Published Articles
- 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
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.
- 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
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.
- 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
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.
- 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
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.
- 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
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.