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Dielectric performance of composites of BaTiO 3 and polymers for capacitor applications under microwave frequency

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Basturk, S. Bahar, Dancer, Claire E. J. and McNally, Tony (2021) Dielectric performance of composites of BaTiO 3 and polymers for capacitor applications under microwave frequency. Journal of Applied Polymer Science, 138 (22). 50521. doi:10.1002/app.50521 ISSN 0021-8995.

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Official URL: http://dx.doi.org/10.1002/app.50521

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Abstract

Composites of nano‐sized barium titanate (BaTiO3) with volume fractions up to 0.5 and poly(butylene terephthalate) (PBT) or linear low‐density polyethylene (LLDPE) were made via extrusion. Scanning electron microscopy demonstrated that BaTiO3 is well dispersed in the polymer matrices. The crystalline content (DSC) and thermal stability (TGA) of both polymers decreased with increasing BaTiO3 loading. Dielectric properties of the composites were measured using a vector network analyzer. Both dielectric permittivity and tangent loss increased with increasing BaTiO3 content. At 2.45 GHz, the dielectric permittivity for 48 vol% BaTiO3‐filled LLDPE and 43 vol% BaTiO3‐filled PBT was 25 and 21.2, respectively. There was a good fit between the Lichtenecker model and experimental data obtained up to a certain value, with the permittivity variations being dependent on volume fraction. The improved dielectric performance achieved on inclusion of BaTiO3 confirms both composite systems as potential candidates for microwave frequency capacitor applications.

Item Type: Journal Article
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Dielectrics, Composite materials, Polymers, Capacitors, Microwaves
Journal or Publication Title: Journal of Applied Polymer Science
Publisher: John Wiley & Sons, Inc.
ISSN: 0021-8995
Official Date: 10 June 2021
Dates:
DateEvent
10 June 2021Published
27 January 2021Available
9 January 2021Accepted
Volume: 138
Number: 22
Article Number: 50521
DOI: 10.1002/app.50521
Status: Peer Reviewed
Publication Status: Published
Reuse Statement (publisher, data, author rights): "This is the peer reviewed version of the following article: Basturk, SB, Dancer, CEJ, McNally, T. Dielectric performance of composites of BaTiO3 and polymers for capacitor applications under microwave frequency. J Appl Polym Sci. 2021;e50521., which has been published in final form at https://doi.org/10.1002/app.50521. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions."
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 4 February 2021
Date of first compliant Open Access: 27 January 2022
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
BİDEB-2219Türkiye Bilimsel ve Teknolojik Araştirma Kurumuhttp://viaf.org/viaf/139632111
Is Part Of: 1

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