Temperature dependence thermal conductivity of ZnS/PMMA nanocomposite

Abstract

ZnS/PMMA nanocomposite with 4 weight percent of ZnS nanoparticles were prepared by solution casting method. The obtained ZnS/PMMA nanocomposites were characterized through XRD and TEM measurements. Transient plane source (TPS) technique was used to determine the thermal conductivity of ZnS/PMMA nanocomposite over the temperature range from 30oCto 120oC. The results indicated that the thermal conductivity shows increasing behavior upto glass transition temperature beyond which, it becomes constant due to the straightening of chains and vacant site scattering of phonons, respectively. It is also observed that thermal conductivity of ZnS/PMMA nanocomposite increases as compared to pure polymer. This behavior of thermal conductivity of nanocomposite is explained on the basis of their structure.