Category: Transient Plane Source
Author(s): N. S. Saxena, Sonalika Agarwal, Vipin Kumar
Keywords: Fillers, nanocomposites, Nanoparticles, Polymer composites, TEM, Thermal Conductivity, TPS Technique, Transient Plane Source, Transient plane source (TPS) method, Transmission electron microscopy, Transmission electron microscopy (TEM), X-ray Diffraction, X-ray diffraction (XRD), XRD
Abstract: Zinc sulfide nanoparticles were embedded in a poly(methyl methacrylate) matrix to prepare a nanocomposite polymer with a higher thermal conductivity than the pure polymer. It was determined by TEM that at a low concentration of filler particles, the particles are uniformly dispersed throughout the matrix; however, at higher concentrations, agglomeration of the filler particles occurs. The effective thermal conductivity for all samples was found to increase with increasing temperature until the glass transition temperature was attained. After this point, the thermal conductivity became constant as temperature increased. The thermal conductivity was also found to increase with increasing filler content, up to 6 wt. %. The thermal conductivity of the sample containing 8 wt. % ZnS was found to be lower than that containing 6 wt. % ZnS. The authors suggest that this decrease is due to increased particle agglomeration in the 8 wt. % sample.
Reference: Applied Nanoscience, 5, 6 (2015) 697-702