Tunable dielectric characteristics of TPU/PPy composite film and foamyfilm with low loss over a wide range of temperature

Swatee Acharya; Lopamudra Swain; Bibhu Prasad Sahoo

doi:10.1002/app.54548

journal article Aug 16, 2023

Tunable dielectric characteristics of TPU/PPy composite film and foamyfilm with low loss over a wide range of temperature

Swatee Acharya

Lopamudra Swain

Bibhu Prasad Sahoo

Journal of Applied Polymer Science Vol. 140 No. 42 · Wiley

View at Publisher Save 10.1002/app.54548

Abstract

AbstractIn the present research, thermoplastic polyurethane/polypyrrole (TPU/PPy) dielectric composites film and the lightweight foamyfilm are fabricated using the most simplified solvent casting and modified phase separation water immersion techniques, respectively. The establishment of chemical interaction and morphological investigations of the fabricated systems are analyzed by Raman spectroscopy and field emission scanning electron microscope (FESEM), respectively. Various dielectric properties, together with complex impedance, are determined over a wide range of frequencies (1 Hz–1 MHz) and temperatures (25°C–120°C). Most interestingly, above 30 Hz frequency, a significantly low value (<0.1) dielectric loss tangent (tan δ) is obtained at ambient temperature. A 90:10 foamyfilm exhibits a dielectric permittivity (ε') and tan δ of 236 and 0.05 at 50 Hz frequency, respectively. Both 90:10 film and foamyfilm systems exhibit a significantly increasing trend of ε′ as well as low tan δ with an increase in temperature over a wide range of frequencies. The thermogravimetric analysis (TGA) results of the 90:10 film and foamyfilm indicate the superior thermal stability of the 90:10 foamyfilm system. Based on the obtained low dielectric loss, the fabricated dielectric film, and foamyfilm can be employed in energy storage and high‐temperature sensing applications.

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References

Details

Published: Aug 16, 2023
Vol/Issue: 140(42)
License: View

Authors

S

Swatee Acharya

Advanced Materials Laboratory, Department of Chemistry, School of Applied Sciences KIIT Deemed to be University Bhubaneswar India

L

Lopamudra Swain

Advanced Materials Laboratory, Department of Chemistry, School of Applied Sciences KIIT Deemed to be University Bhubaneswar India

B

Bibhu Prasad Sahoo

Advanced Materials Laboratory, Department of Chemistry, School of Applied Sciences KIIT Deemed to be University Bhubaneswar India

Cite This Article

Swatee Acharya, Lopamudra Swain, Bibhu Prasad Sahoo (2023). Tunable dielectric characteristics of TPU/PPy composite film and foamyfilm with low loss over a wide range of temperature. Journal of Applied Polymer Science, 140(42). https://doi.org/10.1002/app.54548

Tunable dielectric characteristics of TPU/PPy composite film and foamyfilm with low loss over a wide range of temperature

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