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Electrospun polyvinylidene fluoride-polyoctafluoropentyl acrylate blend based piezocapacitive pressure sensors

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Abstract

In this study, neat polyvinylidene fluoride (PVDF) and its blend with polyoctafluoropentyl acrylate (POFPA) were electrospun under controlled conditions, and studied for their physico-mechanical and piezo-responsive behaviours. Initial FTIR studies confirmed the effect of thermal annealing on the crystalline phase transformations and chaindipole orientation in PVDF as a function of POFPA content. SEM data exhibited “root-shaped” morphology in the blend sample. Higher tensile strength (65.2±0.4 kPa) for the blend compared to that of neat PVDF (1.5±0.03 kPa) confirmed the elastic nature of the blend nanoweb. Peak-to-peak piezoelectric output signal (V p-p 0.976 V) and capacitance hysteresis showed reduced tendency, whereas the capacitance maxima is higher for the blend sample (C max 0.182 nF) compared to that of neat PVDF (V p-p 1.195, C max 0.147 nF). Overall, even 10 wt% addition of POFPA in PVDF greatly enhanced the tensile strength of nanofiber web along with improved piezocapacitive characteristics, a combination of great potential for many commercial sensor applications.

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Authors and Affiliations

  1. Department of Chemistry, School of Advanced Sciences, VIT University, Vellore, 632 014, India

    Ponnan Sathiyanathan & Arun Anand Prabu

  2. Department of Advanced Materials Engineering for Information and Electronics, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi, 17104, Korea

    Ponnan Sathiyanathan, Arun Anand Prabu & Kap Jin Kim

Authors
  1. Ponnan Sathiyanathan
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  2. Arun Anand Prabu
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  3. Kap Jin Kim
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Sathiyanathan, P., Prabu, A.A. & Kim, K.J. Electrospun polyvinylidene fluoride-polyoctafluoropentyl acrylate blend based piezocapacitive pressure sensors. Macromol. Res. 24, 670–674 (2016). https://doi.org/10.1007/s13233-016-4098-1

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  • DOI: https://doi.org/10.1007/s13233-016-4098-1

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