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<p>The impact of polymer-coated CuO nanoparticles (polymethyl methacrylate (PMMA)) on the thermal conductivity and stability of nanofluids at varying temperatures and volume fractions has been studied. PMMA-coated CuO nanoparticles (NPs) are synthesized using a simple and cost-effective co-precipitation method. Stable, homogeneous nanofluids are produced using a two-step method. The polymer forms a uniform coating on the surface of the CuO NPs, enhancing dispersion and maintaining stability for up to 44 days, as confirmed by visual sedimentation tests. The thermal conductivity of PMMA-coated CuO NPs is measured over a temperature range of 300–800°C for 0.05, 0.1, and 0.2% volume fractions. Thermal conductivity is calculated using Bridgman’s equation and the sound velocity of the fluid. The enhancement in thermal conductivity is 292% for PMMA-coated CuO NPs at a 0.2% volume fraction compared to the base fluid.</p>

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Experimental analysis of thermal conductivity in polymethyl methacrylate: Encapsulated CuO nanofluids

  • 期刊论文

  • 发表日期：

    2026年6月26日

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  • Jyoti Gupta,
  • Brijesh Kumar Pandey,
  • Abhay P Srivastava

摘要

The impact of polymer-coated CuO nanoparticles (polymethyl methacrylate (PMMA)) on the thermal conductivity and stability of nanofluids at varying temperatures and volume fractions has been studied. PMMA-coated CuO nanoparticles (NPs) are synthesized using a simple and cost-effective co-precipitation method. Stable, homogeneous nanofluids are produced using a two-step method. The polymer forms a uniform coating on the surface of the CuO NPs, enhancing dispersion and maintaining stability for up to 44 days, as confirmed by visual sedimentation tests. The thermal conductivity of PMMA-coated CuO NPs is measured over a temperature range of 300–800°C for 0.05, 0.1, and 0.2% volume fractions. Thermal conductivity is calculated using Bridgman’s equation and the sound velocity of the fluid. The enhancement in thermal conductivity is 292% for PMMA-coated CuO NPs at a 0.2% volume fraction compared to the base fluid.