Sustainable Dielectrics from Sintered Soyabean Powders: Structure, Thermal and Piezoelectric Properties

Hema Dinesh Barnana, Charlie O'Mahony, Krittish Roy, Ehtsham Ul Haq, Syed A.M. Tofail

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, we approached sintering and crystallization of soyabean powders with a 'cold sintering' approach to develop a bioelectret for potential high-frequency communication applications. Structural disintegration and phase evolution of glycinin globulin proteins present in soyabean powders in relation to sintering parameters were investigated using X ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and thermogravimetry analysis (TGA). Piezoresponse force microscopy (PFM) showed some localized area with weak (0.7 pm/V) to reasonable (2.7 pm/V) out of plane piezoresponse in cold pressed and sintered soyabeans, respectively. Sintered bioelectrets did not show any macroscopic piezoelectricity, however.

Original languageEnglish
Pages (from-to)2270-2274
Number of pages5
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Volume31
Issue number5
DOIs
Publication statusPublished - 2024

Keywords

  • Bioelectret
  • Cold Sintering
  • Glycinin
  • Soyabeans
  • Sustainable Dielectrics

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