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<p>This study involves the fabrication and characterization of novel PMMA-based nanocomposite films enhanced with hybrid ZnO-SiC nanoparticles for advanced electronic applications. Hybrid ZnO-SiC nanoparticles were incorporated into the PMMA matrix with a fixed ZnO-SiC weight ratio of 1:1, while the total nanofiller content was varied at 2, 4, and 6 wt.%. The structural, morphological, optical, and electrical properties of the PMMA-ZnO-SiC nanocomposites were systematically analyzed in relation to nanoparticle concentration. SEM observations indicated a predominantly uniform distribution of ZnO-SiC nanoparticles within the PMMA matrix, exhibiting minimal agglomeration at elevated loadings. Concurrently, XRD analysis confirmed that the PMMA matrix exhibits an amorphous structure, while distinct crystalline peaks corresponding to ZnO and SiC nanoparticles are observed in the nanocomposites. FTIR analysis showed that the strong interactions between the polymer chains and nanoparticles at the interface, but no new chemical bonds were formed. ZnO-SiC nanoparticles showed that they could change their optical properties to make them useful for optoelectronic applications by changing the optical band gap and increasing optical absorption. Tests of dielectric and AC conductivity showed that the electrical performance got better as more and more nanoparticles were added, especially at low frequencies. The nanocomposites that were made also showed that they could be used as pressure sensors and gamma radiation shielding materials because they were very flexible, stable in the environment, and very sensitive. These findings indicate that PMMA-ZnO-SiC nanocomposites may be advantageous for various nanoelectronic and sensing applications in the future.</p>

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Fabrication and tuning structural, optical and electrical characteristics of PMMA-ZnO-SiC nanocomposites for pressure sensor and radiation shielding applications

  • 期刊论文

  • 发表日期：

    2026年4月21日

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  • Rawaa Yahya Habeeb,
  • Majeed Ali Habeeb

摘要

This study involves the fabrication and characterization of novel PMMA-based nanocomposite films enhanced with hybrid ZnO-SiC nanoparticles for advanced electronic applications. Hybrid ZnO-SiC nanoparticles were incorporated into the PMMA matrix with a fixed ZnO-SiC weight ratio of 1:1, while the total nanofiller content was varied at 2, 4, and 6 wt.%. The structural, morphological, optical, and electrical properties of the PMMA-ZnO-SiC nanocomposites were systematically analyzed in relation to nanoparticle concentration. SEM observations indicated a predominantly uniform distribution of ZnO-SiC nanoparticles within the PMMA matrix, exhibiting minimal agglomeration at elevated loadings. Concurrently, XRD analysis confirmed that the PMMA matrix exhibits an amorphous structure, while distinct crystalline peaks corresponding to ZnO and SiC nanoparticles are observed in the nanocomposites. FTIR analysis showed that the strong interactions between the polymer chains and nanoparticles at the interface, but no new chemical bonds were formed. ZnO-SiC nanoparticles showed that they could change their optical properties to make them useful for optoelectronic applications by changing the optical band gap and increasing optical absorption. Tests of dielectric and AC conductivity showed that the electrical performance got better as more and more nanoparticles were added, especially at low frequencies. The nanocomposites that were made also showed that they could be used as pressure sensors and gamma radiation shielding materials because they were very flexible, stable in the environment, and very sensitive. These findings indicate that PMMA-ZnO-SiC nanocomposites may be advantageous for various nanoelectronic and sensing applications in the future.