The current work aims to produce a multifunctional polymeric nanocomposite of SiC-SWCNTs-PVP-PVA as a potential candidate for futuristic applications in optoelectronics and radiation shielding. SiC-SWCNTs-PVP-PVA polymeric nanocomposites (PNCs) were made using the solution-casting technique. Morphological and microstructural characterizations were performed using optical and scanning electron microscopy, energy dispersive X-ray spectroscopy, and Fourier-transform infrared spectroscopy. The UV–visible spectrophotometry technique was utilized to examine the optical features. The optical analysis reveals a vital enhancement in the optical properties of the SWCNTs-PVP-PVA medium due to SiC nanocrystals (NCs) loading. In particular, it exposes that SiC loading modifies the transmittance, optical bandgap, refractive index, dielectric constants, and optical conductivity of the SWCNTs-PVP-PVA medium. The transmittance of the SWCNTs-PVP-PVA medium declines from 80 to 18% through SiC NCs loading. The direct/indirect bandgap decreased to 4.35 eV and 4.54 eV (SiC PNCs) compared to 5.07 eV and 4.92 eV (pure medium), respectively. Nonlinear optical (NLO) constants, such as the first-order (χ⁽¹⁾), third-order (χ⁽³⁾) susceptibility, and refractive index (n₂) were obviously improved. The χ⁽³⁾ value increases to 3.1 × 10⁻¹¹ esu compared to 2.67 × 10⁻¹¹ esu for pure medium. Phy-X/PSD software was applied to assess the photon radiation shielding performance for all PNCs. The linear and mass attenuation coefficients (LAC, MAC), half- and tenth-value layer (HVL, TVL), mean free path (MFP), and effective atomic number (Z_eff.) of SWCNTs-PVP-PVA medium are also reinforced with SiC NCs loading. At 15 keV photon energy, LAC of the SWCNTs-PVP-PVA medium increases to 2.52019 cm⁻¹ (SiC PNCs) compared to 1.37951 cm⁻¹ (pure). The MFP decreases to 0.3968 cm (SiC PNCs) compared to 0.72489 cm (pure). Overall, the SiC-SWCNTs-PVP-PVA PNCs are potential candidates for optoelectronic and radiation shielding developments.

Title

Journal of Materials Science: Materials in Electronics

Publisher

Springer

Publisher Country

United Kingdom

Indexing

Thomson Reuters

Impact Factor

2.8

Publication Type

Both (Printed and Online)

Volume

37

Year

2026

Pages

--