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Makreski, Petre
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Publications (7/7 displayed)
- 2024Piezoelectric PVDF‐TrFE nanocomposite mats filled with BaTiO<sub>3</sub> nanofibers: The effect of poling conditionscitations
- 2022Fabrication of biodegradable polyurethane electrospun webs of fibers modified with biocompatible graphene oxide nanofillercitations
- 2022A Unique Mechanochemical Redox Reaction Yielding Nanostructured Double Perovskite Sr2FeMoO6 With an Extraordinarily High Degree of Anti-Site Disordercitations
- 2020Structural Changes of TiO2 as a Result of Irradiation by E-Beam and X-Rayscitations
- 2019Effect Of Thermal Treatment Of Trepel At Temperature Range 800-1200˚Ccitations
- 2019Effects of the presence of probiotic bacteria in the aging medium on the surface roughness and chemical composition of two dental alloys
- 2015Characterization of Nanoscaled TiO2 Produced by Simplified Sol–Gel Method Using Organometallic Precursorcitations
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article
Piezoelectric PVDF‐TrFE nanocomposite mats filled with BaTiO<sub>3</sub> nanofibers: The effect of poling conditions
Abstract
<jats:title>Abstract</jats:title><jats:p>BaTiO<jats:sub>3</jats:sub> nanofibers (BT NFs), prepared by electrospinning, were used as a filler for electrospun poly(vinylidene fluoride‐<jats:italic>co</jats:italic>‐trifluoroethylene) (PVDF‐TrFE) nanocomposite mats. The phase structure and the effect of poling conditions on the piezoelectric properties of PVDF‐TrFE/BT nanocomposites were investigated. The results showed an improved degree of crystallinity (78.6%) and a high <jats:italic>β</jats:italic>‐crystal phase (up to 98.3%) in all electrospun samples, independent of the nanofiber content. The two‐step poling method, applying electric fields of opposite polarity, led to significantly improved piezoelectric constants d<jats:sub>33</jats:sub> (−31.7 pC N<jats:sup>−1</jats:sup>), strongly dependent on the added BaTiO<jats:sub>3</jats:sub> nanofibers. The inclusion of piezoelectric ceramic nanofibers into a polymer matrix, easily carried out by means of electrospinning, followed by an ad hoc optimized poling treatment, allowed to develop flexible materials with enhanced piezoelectric properties, potentially exploitable in innovative conversion systems used in wearable and sensing devices.</jats:p>