Fabrication and Characterization of Piezoelectric Polymer Nano Composites for Humidity Sensors Applications

  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract

    Piezoelectric polymer nano compositesfor humidity sensors applications are manufactured in this work by adding nano Yttrium oxides (Y2O3) in three ratios (3,6and 9 wt.%) to the polymeric blend consist of (1:9) poly vinyl difluoride (PVDF) and poly methyl methacrylate (PMMA). FTIR results showed that PVDF addition to PMMA causes shifting in the blue direction and there is no chemical bonding between the prepared composites components,butthere is a significant increase in the rate of permeabilityat higherY2O3 ratio. This addition causes the hardness to be increased linearly. Morphology results showed, that the lower ratios of Y2O3 causes the surface became smoother and homogeneous, while higher ratios increase the roughness of the surface. These compositesgive piezoelectric behavior where the electrical resistance decreases by increasing the pressure. With regard to the dielectric properties the losses coefficient increase by increasing the frequency while dielectric constant decreases. The composites showed to be more hydrophilic by increasing theY2O3 ratio,which suggests these composites for water storage applications. The results show possibility of using these composites as humidity sensorsin relative humidity less than 70%, where the electrical resistivity decreases as the relative humidity increasing.



  • Keywords

    Piezoelectric polyme Humidity sensor PVDF PMMA

  • References

      [1] Holler, F. James; Skoog, Douglas A.; Crouch, Stanley R. (2007). "Chapter 1". Principles ofInstrumental Analysis (6th ed.). Cengage Learning. p. 9. ISBN 978-0-495-01201-6.

      [2] Harper, Douglas. "piezoelectric". Online Etymology Dictionary.

      [3] Liddell, Henry George; Scott, Robert; A Greek–English Lexicon at the Perseus Project.

      [4] Manbachi, A. &Cobbold, C. (2011). "Development and Application of Piezoelectric Materials for Ultrasound Generation and Detection". Ultrasound. 19 (4): 187–196.

      [5] B. Jaffe, W. Cook and H. Jaffe, "Piezoelectric Ceramics " New York, p.115, 1971.

      [6] A. J. Moulson and J. M. Herbert, "Piezoelectric Ceramics," in Electroceramics, ed: John Wiley & Sons, Ltd, 2003, pp. 339-410.

      [7] Piezoelectric Ceramics: Principles and Applications ed: APC International Ltd., 2011, pp. 13-33.

      [8] B. Jaffe, W. R. Cook Jr and H. Jaffe, "The Piezoelectric Effect inCeramics," in Piezoelectric Ceramics, ed: Elsevier, 2012, pp. 7-22.

      [9] Sensor technology handbook, edited by Jon Wilson, chapter 12, p (271-282).

      [10] Christian, Stephan. “New generation of humidity sensors.” Sensor Review 22 (2002):300-2.

      [11] H. Bai, X.Wang, Y. Zhou, L.Zhang“ Preparation andcharacterization of poly (vinylidene fluoride) composite membranes blended with nano-crystalline cellulose” Progress in Natural Sciences: Materials International 2012;22(3).

      [12] M.Ramesh and S.Rajendra “Effects of addition BaTio3nano particles on the conductivity of PVDF/PMMA based polymer blend electrolytes” International Journal of Engineering Inventions, Vol 2, Issue 4.Vebreuary 2013.




Article ID: 28009
DOI: 10.14419/ijet.v7i4.19.28009

Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.