Enhanced Thermal Conductivity of Polyaniline Nanofluids Synthesized using CuCl2 as Catalyst

Krishanu Saha; U. K. Mandal; Monisha Mridha Mandal

Abstract

AbstractThe development of nanofluids for enhancing the heat transfer properties over the conventional fluids is mainly hindered by a vital issue of dispersion stability and hence is being explored in the present work. In the present study, Copper Polyaniline nanoparticle was synthesized by the oxidative polymerization method using CuCl2 as a catalyst. The characterization of Copper Polyaniline was performed. The sizes of nanoparticles were found to be within 7.24 nm to 80.43 nm having an average size of 30.98 nm. It was found that nanoparticles with Sodium Dodecyl Sulphate (SDS) surfactant had stability for more than 60 days. Furthermore, the thermal conductivity of Cu-PANI nanofluid with 0.1, 0.2, and 0.3 vol. % concentration was investigated. The thermal conductivity enhancements of nanofluids were 1.35, 1.28, and 1.31, respectively, as compared to distilled water at 20°C. The thermal conductivity values of nanofluids were enhanced by 28% to 34% when the nanoparticle concentration was increased from 0.1 to 0.3 vol. % with the addition of 0.5 wt. % sodium dodecyl sulphate as a surfactant in comparison to distilled water. The thermal conductivity of nanofluid was significantly increased with the increase in temperature from 20°C to 40°C. The percentage enhancement of thermal conductivity was 28% at 20°C to 63.2% at 40°C for 0.2 vol. % of nanofluid concentration. The present study revealed that thermal properties of base fluids could be enhanced by addition of Copper Polyaniline nanoparticles which may improve the energy efficiency of the different heat transfer equipment.Keywords: Copper Polyaniline nanofluid, synthesis, characterization, stability, thermal conductivityCitation: Krishanu Saha, U.K. Mandal, Monisha Mridha Mandal. Enhanced Thermal Conductivity of Polyaniline Nanofluids Synthesized using CuCl2 as Catalyst. Journal of Polymer & Composites. 2023; 11(1): 27–48p.