By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Nanorods. According to news reporting originating from Beijing, People's Republic of China, by NewsRx correspondents, research stated, "Although polymer nanocomposites containing Janus nanoparticles have demonstrated their powerful potential in the construction of ordered hierarchical structures with unique properties, less has been known about the shear behavior of these novel nanocomposites. Herein, Using systematic computer simulations, we investigate the structures and kinetics of binary polymer mixtures filled with Janus nanorods undergoing a shear field and the relaxing behavior of the same systems after ceasing shear."
Our news editors obtained a quote from the research from Tsinghua University, "The results show that exerting shear facilitates the uniform alignment of these one-dimensional (1D) nanoparticles at the phase interface, along a dominant angle depending mainly on the ratio between two surface chemical compartments of the rods. The surface geometry of Janus nanorods also plays an important role in the structural morphology and kinetics of these polymer nanocomposites during the shear process. In the relaxing process after ceasing shear, it is interesting to find that the kinetics of these orientaionally hierarchical structures can be effectively arrested by tailoring the surface geometry of Janus nanorods. The rod rod interaction and the spatial confinement from polymer phases are also found to significantly influence the kinetics and the macroscopic alignment of nanorods in the relaxing process. Through theoretically analyzing various energetic contributions, we present the detailed mechanism for these self-trapped anisotropic sheared morphologies in the relaxing stage."
According to the news editors, the research concluded: "These findings yield an effective and tunable route to achieve ordered and anisotropic arrays of 1D nanoparticles on a macroscopic scale, toward fabrication of polymer nanocomposites with robust photovoltaic and mechanical properties."
For more information on this research see: Janus Nanorods in Shearing-to-Relaxing Polymer Blends. Macromolecules, 2013;46(18):7465-7476. Macromolecules can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Macromolecules - www.pubs.acs.org/journal/mamobx)
The news editors report that additional information may be obtained by contacting W. Li, Tsinghua Univ, Dept. of Chem Engn, Key Lab Adv Mat MOE, Beijing 100084, People's Republic of China. Additional authors for this research include B.J. Dong and L.T. Yan (see also Nanorods).
Keywords for this news article include: Asia, Beijing, Nanoparticle, Nanocomposite, Nanotechnology, Emerging Technologies, People's Republic of China
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