technology Findings from University of Quebec -->
By a News Reporter-Staff News Editor at Science Letter -- A new study on Nanotechnology is now available. According to news reporting from Chicoutimi, Canada, by NewsRx journalists, research stated, "This article is focused on the preparation and characterization of PVDF/ZnO composite materials. The superhydrophobic surface was prepared through spray coating of a mixture of PVDF polymer and ZnO nanoparticles on aluminum substrate."
The news correspondents obtained a quote from the research from the University of Quebec, "Stearic acid was added to improve the dispersion of ZnO. Taguchi's design of experiment method using MINITAB15 was used to rank several factors that may affect the superhydrophobic properties in order to formulate the optimum conditions. The Taguchi orthogonal array L9 was applied with three level of consideration for each factor. ANOVA were carried out to identify the significant factors that affect the water contact angle. Confirmation tests were performed on the predicted optimum process parameters. The crystallinity and morphology of PVDF-ZnO membranes were determined by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The results of Taguchi method indicate that the ZnO and stearic acid contents were the parameters making significant contribution toward improvement in hydrophobicity of PVDF materials. As the content of ZnO nanoparticles increased, the values of water contact angle increased, ranging from 122 degrees to 159 degrees, while the contact angle hysteresis and sliding angle decreased to 3.5 degrees and 2.5 degrees, respectively. The SEM results show that hierarchical micro-nanostructure of ZnO plays an important role in the formation of the superhydrophobic surface."
According to the news reporters, the research concluded: "FTIR results showed that, in the absence or present ZnO nanoparticles, the crystallization of the PVDF occurred predominantly in the beta-phase."
For more information on this research see: An optimization of superhydrophobic polyvinylidene fluoride/zinc oxide materials using Taguchi method. Applied Surface Science, 2013;288():229-237. Applied Surface Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Applied Surface Science - www.elsevier.com/wps/product/cws_home/505669)
Our news journalists report that additional information may be obtained by contacting A.M.A. Mohamed, Univ Quebec Chicoutimi, Canada Res Chair Atmospher Icing Engn Power Netwo, Chicoutimi, PQ, Canada. Additional authors for this research include R. Jafari and M. Farzaneh (see also technology.html">Nanotechnology).
Keywords for this news article include: Quebec, Canada, Anions, Chemicals, Chemistry, Fluorides, Chicoutimi, Zinc Oxide, Nanoparticle, Nanotechnology, Zinc Compounds, Hydrofluoric Acid, Emerging Technologies, North and Central America
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