Temperature Dependence Thermal Conductivity of ZnS/PMMA Nanocomposite
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 30oC to 120 °C. The results indicated that the thermal conductivity shows increasing behavior up to 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.
KeywordsPoly (methyl methacrylate) Polymer nanocomposites Thermal conductivity
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Authors are thankful to Council of Scientific and Industrial Research (CSIR), New Delhi for providing financial assistance through an Emeritus Scientist scheme to Prof. N.S. Saxena during the course of this work. One of the authors (Sonalika Agarwal) would also be thankful to Director (Dr. Narendra Kumar), KIET and to HOD (Dr. C.M. Batra) for their help in various ways.
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