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<p>Polyethylene terephthalate (PET) was a widely recognized polymer known for its robust mechanical performance, chemical resistance, and ease of processing. Its transparency and stability properties made it a potential material for a wide range of applications, including flexible electronic devices, packaging solutions, and thin-film transistors. However, the limited dielectric properties of pure PET restricted its applications in advanced dielectric and electronic devices. This paper explores and analyses improvements in the dielectric and functional performance of PET through the integration of nanoscale Barium Titanate (BaTiO<sub>3</sub>). BaTiO<sub>3</sub> is a ceramic material, possessing high permittivity and notable dielectric properties. In this paper, PET films were integrated with varying BaTiO<sub>3</sub> concentrations (0–8 wt%) and compatibilizer through the utilization of maleic anhydride-grafted PET, fabricated via the spin coating technique. The fabricated composites with optimal composition exhibited a higher dielectric constant, a lower leakage current density, and improved thermal stability while maintaining moderate surface flexibility. Based on the investigational results, the PET-4 wt% BaTiO<sub>3</sub> exhibited a higher dielectric constant (5.3), a marginal enhancement in surface roughness of 6.1&#xa0;nm, reduced leakage current density of 4.5 × 10<sup>− 9</sup> A/cm<sup>2</sup>, balanced dielectric energy loss of 0.018, enhanced thermal stability (Tmax-444&#xa0;°C) and better flexibility up to 8500 bending cycles under 10&#xa0;mm bending radius.</p>

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Production and enhancement of dielectric, flexibility, and thermal stability of barium titanate embedded polyethylene terephthalate

  • 期刊论文

  • 发表日期：

    2026年6月26日

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  • Surrya Prakash DilliBabu,
  • V. Geethalakshmi,
  • Sandip Kunar,
  • Arun Prakash J,
  • Raj Kumar Gupta,
  • S. Prabagaran,
  • M. Murali,
  • Ramya Maranan,
  • S. Sathiyamurthy,
  • Anand Rajendran

摘要

Polyethylene terephthalate (PET) was a widely recognized polymer known for its robust mechanical performance, chemical resistance, and ease of processing. Its transparency and stability properties made it a potential material for a wide range of applications, including flexible electronic devices, packaging solutions, and thin-film transistors. However, the limited dielectric properties of pure PET restricted its applications in advanced dielectric and electronic devices. This paper explores and analyses improvements in the dielectric and functional performance of PET through the integration of nanoscale Barium Titanate (BaTiO3). BaTiO3 is a ceramic material, possessing high permittivity and notable dielectric properties. In this paper, PET films were integrated with varying BaTiO3 concentrations (0–8 wt%) and compatibilizer through the utilization of maleic anhydride-grafted PET, fabricated via the spin coating technique. The fabricated composites with optimal composition exhibited a higher dielectric constant, a lower leakage current density, and improved thermal stability while maintaining moderate surface flexibility. Based on the investigational results, the PET-4 wt% BaTiO3 exhibited a higher dielectric constant (5.3), a marginal enhancement in surface roughness of 6.1 nm, reduced leakage current density of 4.5 × 10− 9 A/cm2, balanced dielectric energy loss of 0.018, enhanced thermal stability (Tmax-444 °C) and better flexibility up to 8500 bending cycles under 10 mm bending radius.