Macromolecular Materials and Engineering

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Recently Published Articles

  1. Tailoring Polylactide Properties for Automotive Applications: Effects of Co-Addition of Halloysite Nanotubes and Selected Plasticizer

    Delphine Notta-Cuvier, Marius Murariu, Jérémy Odent, Rémi Delille, Amani Bouzouita, Jean-Marie Raquez, Franck Lauro and Philippe Dubois

    Article first published online: 27 FEB 2015 | DOI: 10.1002/mame.201500032

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    Aiming at developing biomaterials suitable for automotive applications, nanocomposites PLA-halloysite nanotubes (HNT) are modified by plasticization with tributyl citrate. Thanks to a good compromise between high tensile and flexural properties and impact resistance, ductility and degree of crystallinity, in particular, plasticized PLA-HNT nanocomposites appear as very promising alternatives to petroleum-based materials, providing that plasticizer content is carefully chosen.

  2. Influence of Processing Conditions on Properties of Poly (Vinyl acetate)/Cellulose Nanocrystal Nanocomposites

    Janak Sapkota, Sandeep Kumar, Christoph Weder and E. Johan Foster

    Article first published online: 19 FEB 2015 | DOI: 10.1002/mame.201400313

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    The influence of processing on the morphology and mechanical properties of poly(vinyl acetate)/cellulose nanocrystal (CNC) composites was investigated using two different melt-processing techniques and compared to the well-established solution-casting method. The high shear during mixing in a twin-screw extruder degraded CNCs and resulted materials with inferior mechanical properties; whereas processing in a low shear roller blade mixer afforded materials comparable to the reference system.

  3. Temperature Dependency of Nucleation Efficiency of Carbon Nanotubes in PET and PBT

    Andreas Wurm, Anja Herrmann, Maria Cornelius, Evgeny Zhuravlev, Doris Pospiech, Radu Nicula and Christoph Schick

    Article first published online: 19 FEB 2015 | DOI: 10.1002/mame.201400405

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    The crystallization behavior of PET and PBT filled with MWCNTs has been experimentally determined in the entire temperature range between glass transition and melting temperature by differential fast scanning chip calorimetry (several 1000K/s). Increasing filler content speeds up crystallization at low supercooling, where heterogeneous nucleation dominates, but not at large supercooling near Tg, where homogeneous nucleation dominates.

  4. Investigation Into Accessible Surface Vinyl Concentrations of Nonstoichiometric PDMS Microspheres from Hydrosilylation Reactions and Their Further Crosslinking Reactions

    Baoguang Ma, Jens Henrik Hansen, Søren Hvilsted and Anne Ladegaard Skov

    Article first published online: 11 FEB 2015 | DOI: 10.1002/mame.201400406

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    Surface vinyl concentration of PDMS microspheres is highly important as it determines further reactivity of microspheres. This work presents a novel titration method for quantification of surface vinyl concentration based on efficiently and covalently titration with monofunctional hydride polymers.

  5. Combined and Distinct Contributions of Different Carbon Nano-Forms in Polypropylene

    Eleftheria Roumeli, Nikolaos Nianias, Maria Filippousi, Apostolos Avgeropoulos, Konstantinos Chrissafis, Georgios Z. Papageorgiou and Dimitrios N. Bikiaris

    Article first published online: 10 FEB 2015 | DOI: 10.1002/mame.201400419

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    We present the combined and distinct effects of CNTs and NDs to the mechanical and thermal properties of PP. The combined action of fillers enables the improvement of mechanical properties which is also related to their crystalline characteristics and crystallization kinetics. The detected reinforcing effects are only enabled in specific ratios and are probably linked with the filler's dispersion state.

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