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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:30 |
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Conference: Bucharest University Faculty of Physics 2016 Meeting
Section: Polymer Physics
Title:
PVDF coatings deposited by MAPLE
Authors:
L.N.Dumitrescu1,2, I.Tirca1,2, V.Ion1, A. Moldovan1, V.Marascu1,3, V.Dinca1, M. Dinescu1
Affiliation:
1National Institute for Laser and Radiation, Bucharest, Magurele, Romania.
2University of Craiova, Faculty of Sciences, Craiova, Romania.
3University of Bucharest, Faculty of Physics, Bucharest, Romania
E-mail
nicoleta.dumitrescu@inflpr.ro, ln_dumitrescu@yahoo.com
Keywords:
PVDF, fluoropolymers, coatings, MAPLE
Abstract:
Polyvinylidene fluoride (PVDF) is part of a family of semi-crystalline fluoropolymers which is characterized by interesting properties as: high chemical corrosion resistance, polymorphism and piezoelectric properties [1], which make it very attractive for a various applications, from aerospace to medical applications. In this work, we report preliminary results on optical and morphological properties correlated with deposition parameters of PVDF thin films grown by matrix assisted pulsed laser evaporation (MAPLE) at 266 nm wavelength. A parametric study was conducted based on target concentration, laser fluence and number of pulses in order to find the optimal deposition parameters for obtaining uniform and functional coatings. The layers were deposited on various substrates as Si, SiO2 using a frozen target with different concentrations (0.5% -7%) of polymer in dimethyl sulfoxide (DMSO) matrix solvent.
The resulted coatings were investigated in terms of optical, morphology and chemical structure properties by ultraviolet–visible spectroscopy (UV-VIS), spectroellipsometry (SE), atomic force microscopy (AFM) and Fourier transform infrared spectroscopy (FTIR).
Based on the results obtained, we have demonstrate that MAPLE is a suitable technique for obtaining PVDF thin films with optical and structural characteristics resembling to the bulk material and in agreement with the literature [2].
References:
1) H. Kawai, “The Piezoelectricity of poly(vinylidene fluoride),” Jpn. J. Appl. Phys., Vol. 8, pp. 975-976, 1969.
2) Ajay Pal Indolia& M. S. Gaur, Optical properties of solution grown PVDF-ZnOnanocomposite thin films, JOURNAL OF POLYMER RESEARCH, DOI 10.1007/s10965-012-0043-y, DECEMBER 2012.
Acknowledgement:
This work was supported by Romanian National Authority for Scientific Research (CNCS – UEFISCDI), under the projects PNII- PT-PCCA-2013-4-199 and PN-II-RU-TE-2014-4-2434
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