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Polymers 2015, 7(8), 1444-1463;

Preparation and Characterization of Polyvinylidene Fluoride/Graphene Superhydrophobic Fibrous Films

Transport Phenomena and Nanotechnology (TPNT) Laboratory, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 14174, Iran
NFCRS, Nuclear Science and Technology Research Institute, Tehran 14155, Iran
Department of Chemical Engineering, Iran University of Science & Technology, Tehran 16846, Iran
Authors to whom correspondence should be addressed.
Academic Editor: Scott M. Husson
Received: 25 April 2015 / Revised: 13 June 2015 / Accepted: 8 July 2015 / Published: 6 August 2015
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A new strategy to induce superhydrophobicity via introducing hierarchical structure into the polyvinylidene fluoride (PVDF) film was explored in this study. For this purpose nanofibrous composite films were prepared by electrospinning of PVDF and PVDF/graphene blend solution as the main precursors to produce a net-like structure. Various spectroscopy and microscopy methods in combination with crystallographic and wettability tests were used to evaluate the characteristics of the synthesized films. Mechanical properties have been studied using a universal stress-strain test. The results show that the properties of the PVDF nanofibrous film are improved by compositing with graphene. The incorporation of graphene flakes into the fibrous polymer matrix changes the morphology, enhances the surface roughness, and improves the hydrophobicity by inducing a morphological hierarchy. Superhydrophobicity with the water contact angle of about 160° can be achieved for the PVDF/graphene electrospun nanocomposite film in comparison to PVDF pristine film. View Full-Text
Keywords: nanofiber; electrospun film; PVDF/graphene nanocomposite; hydrophobicity nanofiber; electrospun film; PVDF/graphene nanocomposite; hydrophobicity

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Moradi, R.; Karimi-Sabet, J.; Shariaty-Niassar, M.; Koochaki, M.A. Preparation and Characterization of Polyvinylidene Fluoride/Graphene Superhydrophobic Fibrous Films. Polymers 2015, 7, 1444-1463.

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