Synergistic Enhancement of Mechanical and Dielectric Properties in BaTiO3/PDMS Composites for Flexible Energy Harvesting Devices

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dc.contributor.authorRerngroen, Nakulkarn
dc.contributor.authorSasipongpan, Apinya
dc.contributor.authorVittayakorn, Wanwilai
dc.date.accessioned2026-08-06T10:54:19Z
dc.date.available2026-08-06T10:54:19Z
dc.date.issued2026-01-01
dc.description.abstractThis study presents the fabrication, characterization, and performance evaluation of flexible piezoelectric composites based on polydimethylsiloxane embedded with varying volume fractions (0–25 vol%) of barium titanate nanoparticles. The composites were prepared via a conventional casting method and systematically analyzed to investigate the synergistic enhancement of their mechanical, dielectric, and piezoelectric properties. Structural and morphological analyses confirmed the retention of the crystalline BaTiO<inf>3</inf> phase and its uniform dispersion within the PDMS matrix, with some agglomeration observed at higher filler loadings. Mechanical testing revealed that the 20 vol% BaTiO<inf>3</inf> composite exhibited optimal tensile strength and flexibility. Dielectric measurements showed significant increase in the dielectric constant with increasing BaTiO<inf>3</inf> content, with the 25 vol% composite achieving a 100% enhancement compared to pure PDMS. Theoretical modeling was employed to compare experimental results with established effective medium theories. Under cyclic compression, the composites demonstrated a progressive increase in output voltage, reaching up to ~426 V at 25 vol% BaTiO<inf>3</inf>, surpassing performance reported in previous studies. Additionally, the incorporation of carbon nanotubes further enhanced dielectric efficiency and mechanical stretchability, although a slight reduction in piezoelectric output was observed. These results underscore the potential of BaTiO<inf>3</inf>/PDMS nanocomposites, with and without CNTs, for next-generation flexible energy harvesting devices.
dc.identifier.citationPolymer Plastics Technology and Materials, 65(1), 160-176, 2026
dc.identifier.doi10.1080/25740881.2025.2586689
dc.identifier.issn25740881
dc.identifier.other2-s2.0-105021869950
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/17792
dc.sourcePolymer Plastics Technology and Materials
dc.subjectBaTiO3
dc.subjectcarbon nanotubes
dc.subjectflexible energy harvesting
dc.subjectPDMS
dc.subjectpiezoelectric nanogenerators
dc.titleSynergistic Enhancement of Mechanical and Dielectric Properties in BaTiO3/PDMS Composites for Flexible Energy Harvesting Devices
dc.typeArticle

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