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<p>Carbon-based nanofillers have emerged as an effective approach for tailoring the structural and functional properties of polymer nanocomposites. In this study, graphene oxide (GO)-reinforced PVDF/PVC nanocomposite films were successfully fabricated using a solution-casting technique and systematically characterized to investigate their structural and physical properties. Atomic force microscopy (AFM) and contact angle measurements revealed that GO incorporation increased the surface roughness and hydrophobicity of the PVDF/PVC nanocomposites. Fourier transform infrared (FTIR) spectroscopy confirmed enhanced intermolecular interactions between GO and the polymer matrix, accompanied by an increased electroactive β- and γ-phase content and improved polymer-chain organization. The enhanced hydrophobicity observed from the contact angle measurements was consistent with the structural modifications identified by FTIR analysis. Furthermore, GO incorporation significantly improved the pyroelectric coefficient, indicating enhanced polarization stability and more efficient thermally induced charge generation. The PVDF/PVC@0.2 wt.%&#xa0;GO&#xa0;hybrid nanocomposite exhibited the highest pyroelectric response, demonstrating the effectiveness of GO in enhancing the structural and functional performance of the polymer blend. These findings highlight the potential of PVDF/PVC@0.2 wt.%&#xa0;GO hybrid nanocomposites for applications in high-performance pyroelectric sensors, flexible electronics, and thermal energy-harvesting devices.</p>

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Enhancement of hydrophobicity and pyroelectric performance in graphene oxide reinforced PVDF/PVC nanocomposites

  • 期刊论文

  • 发表日期：

    2026年7月28日

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  • Rohan Sagar,
  • M. S. Gaur,
  • R. K. Tiwari,
  • Vinod Kumar Kushwaha,
  • Sameer Vyas,
  • Sergej Iľkovič,
  • Jun-Yen Uan

摘要

Carbon-based nanofillers have emerged as an effective approach for tailoring the structural and functional properties of polymer nanocomposites. In this study, graphene oxide (GO)-reinforced PVDF/PVC nanocomposite films were successfully fabricated using a solution-casting technique and systematically characterized to investigate their structural and physical properties. Atomic force microscopy (AFM) and contact angle measurements revealed that GO incorporation increased the surface roughness and hydrophobicity of the PVDF/PVC nanocomposites. Fourier transform infrared (FTIR) spectroscopy confirmed enhanced intermolecular interactions between GO and the polymer matrix, accompanied by an increased electroactive β- and γ-phase content and improved polymer-chain organization. The enhanced hydrophobicity observed from the contact angle measurements was consistent with the structural modifications identified by FTIR analysis. Furthermore, GO incorporation significantly improved the pyroelectric coefficient, indicating enhanced polarization stability and more efficient thermally induced charge generation. The PVDF/PVC@0.2 wt.% GO hybrid nanocomposite exhibited the highest pyroelectric response, demonstrating the effectiveness of GO in enhancing the structural and functional performance of the polymer blend. These findings highlight the potential of PVDF/PVC@0.2 wt.% GO hybrid nanocomposites for applications in high-performance pyroelectric sensors, flexible electronics, and thermal energy-harvesting devices.