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<p>Polyvinyl alcohol (PVA)/Carboxymethylcellulose (CMC)/Carbon fiber (CF) is a well-known composite for various applications like automobile, EMI shielding, and industrial heating. In this study, the effect of Ti<sub>3</sub>C<sub>2</sub> MXene on the structural and optical properties of PVA/CMC/CF fabricated by solution casting method was explored. FTIR validated the molecular interaction between PVA-CMC chains and MXene nanofiller. The growth of lattice imperfections and a reduction in crystalline quality of PVA-CMC–CF composite upon incorporating MXene were revealed by XRD. UV-Vis spectroscopy was employed to investigate the linear and nonlinear optical parameters. Some interesting results were demonstrated; for example, adding MXene to PVA-CMC-CF composites causes a halo to appear in the visible range, attributed to MXene’s significant surface plasmon resonance leading to an increase of extinction coefficient and refractive index. The optical band gap of PVA-CMC-CF composites lessened with MXene concentration augmentation because of establishing new energy levels between the optical band boundaries of the polymer. The dielectric constant and dielectric loss were increased after MXene doping due to variations in the density of localized energy states that arise amongst the HOMO and LUMO. Incorporating MXene into PVA-CMC-CF reduced VELF and SELF ascribed to increased free electrons in the host matrix. The optical conductivity was decreased with a rise in MXene concentration ascribed to increasing free charge carriers inside polymer composite. The optical features of PVA-CMC-CF-MXene nanocomposites nominate them for optoelectronics, such as fast optical switching, UV shielding, and highly reflecting filters.</p>

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Effect of Ti3C2 MXene on Structural, Linear, Nonlinear Optical Properties of Polyvinyl Alcohol—Carboxymethyl Cellulose—Carbon Fiber Composites for Optoelectronics Applications

  • 期刊论文

  • 发表日期：

    2025年5月16日

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  • M. M. Atta,
  • Eman Aldosari,
  • Hesham M. H. Zakaly,
  • Qinfang Zhang

摘要

Polyvinyl alcohol (PVA)/Carboxymethylcellulose (CMC)/Carbon fiber (CF) is a well-known composite for various applications like automobile, EMI shielding, and industrial heating. In this study, the effect of Ti3C2 MXene on the structural and optical properties of PVA/CMC/CF fabricated by solution casting method was explored. FTIR validated the molecular interaction between PVA-CMC chains and MXene nanofiller. The growth of lattice imperfections and a reduction in crystalline quality of PVA-CMC–CF composite upon incorporating MXene were revealed by XRD. UV-Vis spectroscopy was employed to investigate the linear and nonlinear optical parameters. Some interesting results were demonstrated; for example, adding MXene to PVA-CMC-CF composites causes a halo to appear in the visible range, attributed to MXene’s significant surface plasmon resonance leading to an increase of extinction coefficient and refractive index. The optical band gap of PVA-CMC-CF composites lessened with MXene concentration augmentation because of establishing new energy levels between the optical band boundaries of the polymer. The dielectric constant and dielectric loss were increased after MXene doping due to variations in the density of localized energy states that arise amongst the HOMO and LUMO. Incorporating MXene into PVA-CMC-CF reduced VELF and SELF ascribed to increased free electrons in the host matrix. The optical conductivity was decreased with a rise in MXene concentration ascribed to increasing free charge carriers inside polymer composite. The optical features of PVA-CMC-CF-MXene nanocomposites nominate them for optoelectronics, such as fast optical switching, UV shielding, and highly reflecting filters.