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<p>In this study, silicon carbide (SiC)/graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) nanohybrids were successfully synthesized and incorporated into poly(butylene adipate-<i>co</i>-terephthalate) (PBAT) nanocomposite films using the solvent casting method at different loadings (1, 2, 3, and 5 wt%). The structural and morphological characteristics of the nanocomposite films were analyzed using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The SEM images confirmed the uniform dispersion of SiC/g-C<sub>3</sub>N<sub>4</sub> within the PBAT matrix. The incorporation of 5 wt% SiC/g-C<sub>3</sub>N<sub>4</sub> significantly improved the material properties, yielding a maximum tensile strength of 26.1&#xa0;MPa (vs. neat PBAT: ~18.4&#xa0;MPa) and a water contact angle of 94.5° (vs. neat PBAT: ~72.6°), indicating enhanced mechanical strength and hydrophobicity. The antibacterial activity was evaluated against <i>Escherichia coli</i> (<i>E. coli</i>) and <i>Staphylococcus aureus</i> (<i>S. sureus</i>) using the agar well diffusion method. The 5 wt% nanocomposite film exhibited the largest inhibition zones, measuring 15.2 and 13.6&#xa0;mm against <i>E. coli</i> and <i>S. aureus</i>, respectively, whereas neat PBAT showed no antibacterial activity. These findings demonstrate that incorporating SiC/g-C<sub>3</sub>N<sub>4</sub> enhances both the physicochemical and antibacterial properties of PBAT, highlighting its potential for food packaging applications.</p>

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Development of PBAT films reinforced with SiC/g-C3N4 nanohybrids for enhanced biocompatibility and antibacterial performance

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月15日

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  • Raja Venkatesan,
  • Kumarasamy Jayakumar,
  • Chaitany Jayprakash Raorane,
  • Maher M. Alrashed,
  • Alexandre A. Vetcher,
  • Seong-Cheol Kim

摘要

In this study, silicon carbide (SiC)/graphitic carbon nitride (g-C3N4) nanohybrids were successfully synthesized and incorporated into poly(butylene adipate-co-terephthalate) (PBAT) nanocomposite films using the solvent casting method at different loadings (1, 2, 3, and 5 wt%). The structural and morphological characteristics of the nanocomposite films were analyzed using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The SEM images confirmed the uniform dispersion of SiC/g-C3N4 within the PBAT matrix. The incorporation of 5 wt% SiC/g-C3N4 significantly improved the material properties, yielding a maximum tensile strength of 26.1 MPa (vs. neat PBAT: ~18.4 MPa) and a water contact angle of 94.5° (vs. neat PBAT: ~72.6°), indicating enhanced mechanical strength and hydrophobicity. The antibacterial activity was evaluated against Escherichia coli (E. coli) and Staphylococcus aureus (S. sureus) using the agar well diffusion method. The 5 wt% nanocomposite film exhibited the largest inhibition zones, measuring 15.2 and 13.6 mm against E. coli and S. aureus, respectively, whereas neat PBAT showed no antibacterial activity. These findings demonstrate that incorporating SiC/g-C3N4 enhances both the physicochemical and antibacterial properties of PBAT, highlighting its potential for food packaging applications.