Berlin 2015 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 11: Nanoparticles and Composite Materials II (joint CPP/BP)
BP 11.7: Vortrag
Montag, 16. März 2015, 16:45–17:00, C 243
Matryoshka-Doll-like Shish-Kebab Nanocomposite: Nanohybrid Shish-Kebabs within Nanofiber Shish-Kebabs — •Matthias M.L. Arras1, Richard Jana1, Christian Grasl2, and Klaus D. Jandt1 — 1Chair of Materials Science (CMS), Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Jena, Germany — 2Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria
The shish-kebab morphology in semi-crystalline polymer fibers is a key to the outstanding properties of polymer fibers. Here, we present the creation of a two-level hierarchical fiber structure by combining two recent artificial shish-kebab nanostructures: The nanohybrid shish-kebab (NHSK), i.e., a carbon nanotube (CNT) overgrown by polymer kebabs and the nanofiber shish-kebab (NFSK), i.e., an electrospun nanofiber decorated by larger lamellae crystals. We tested the hypothesis that during electrospinning of a CNT/polymer solution the NHSK can form directly and that the resulting fibers can be used to subsequently create the NFSK. The resulting nanocomposite was analyzed by transmission and scanning electron microscopy and revealed the successful creation of both the NHSK and the NFSK. Thus, for the first time, we demonstrated the creation of the NHSK morphology during electrospinning. The two-level hierarchical nanocomposite is a proof of principle that the shish-kebab morphology can be extended from the nanoscale to the macroscale which may contribute to future high strength nanocomposites.