Saha, Shubhanwita and Yauvana, V and Chakraborty, Sandip and Sanyal, Dipayan (2019) Synthesis and Characterization of Polyvinylidene-fluoride (PVDF) Nanofiber for Application as Piezoelectric Force Sensor. Materials Today-Proceedings, 18 (Pt 3). pp. 1450-1458. ISSN 2214-7853

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Abstract

In the present study, PVDF nanofibers containing primarily beta-phase have been synthesized by electrospinning process. For electrospinning, a number of PVDF laden precursors were prepared varying the composition of solvents (60%-80% DMF) as well as wt% of PVDF (10wt%, 12wt%, and 15 wt% PVDF). The operating parameters for electrospinning were also varied for achieving optimal size and morphology of the PVDF nanofibers. The synthesized fibers were characterized by Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FE-SEM), X-Ray Diffraction (XRD) and differential scanning calorimetry (DSC). PVDF with the solvent ratio of 7:3 offers beads free, thin nanofibers in comparison with other compositions. The presence of crystalline beta-phase was successfully confirmed by the XRD analysis. An exothermic peak was also observed by the DSC analysis at the temperature of 70 degrees C. PVDF nanofiber based piezoelectric force sensors were constructed and their performances were tested by applying calibrated load using a universal mechanical testing (UTM) machine and observing the resulting signal in an oscilloscope. A clear correlation was observed between the peak voltage detected by the PVDF force sensor and the applied load. The study revealed the piezoelectric property for force sensing tends to maximize (maximum current -14 mu A, initial sensitivity-160 mV/kPa) around 12 wt% of PVDF due to presence of beta-gamma phase in sample. (C) 2019 Published by Elsevier Ltd.

Item Type:	Article
Additional Information:	International Conference on Nanotechnology - Ideas, Innovations and Initiatives (ICN3I), Roorkee, INDIA, DEC 06-08, 2017
Subjects:	Electronics
Divisions:	Non-Oxide Ceramics & Composites
Depositing User:	Bidhan Chaudhuri
Date Deposited:	19 Nov 2019 07:29
Last Modified:	19 Nov 2019 07:29
URI:	http://cgcri.csircentral.net/id/eprint/4664

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