Thermally conductive phase change nanocomposites presenting PS-PEG/ SeO2 and PS-PEG/BN/SeO2

Abstract

The phase change and thermal conductivity properties of nanocomposite materials consisting of cross-linked Poly(Styrene-block-Ethylene Glycol Dimethyl Methacrylate) (PS-PEG DM), boron nitride (BN), and selenium dioxide (SeO2) were investigated in this study. The different content of phase-changed materials (PCM) nanocomposites was prepared by using the hydraulic pressure technique. Promising melting enthalpy values (104.5, 98.8 and 165.8 J g−1) have been reached for P1Se3, P2BN2Se2, and P3BN2Se2 PCM nanocomposites. The enthalpy efficiencies associated with the processes of melting and freezing, denoted as λm and λc, respectively, were determined by the analysis of data obtained from DSC. Our study was demonstrated to present comprehensive information on the PS-PEG/BN, PS-PEG/SeO2, and PS-PEG/BN/SeO2 phase change nanomaterials, thereby facilitating their potential applications in various fields. The phase change and thermal conductivity properties of PS-PEG/BN/SeO2 nanocomposites were investigated. The incorporation of SeO2 and BN nanoparticles significantly enhanced the thermal conductivity (for P2BN4Se5), reaching values up to 8.277 W m−1 K−1. The λm values of P1Se3, P2BN2Se2, and P3BN2Se2 were calculated as 68.79, 61.23, and 87.86, respectively. The λc values of P2Se3; P1BN2Se2 were also calculated at 70.10; 98.93 and 161.92, respectively.