naa a22 4500 510768067 CHVBK 20180411083203.0 cr unu---uuuuu 180411e20131101xx s 000 0 eng 10.1007/s12043-013-0605-5 doi (NATIONALLICENCE)springer-10.1007/s12043-013-0605-5 Effective thermal conductivity of condensed polymeric nanofluids (nanosolids) controlled by diffusion and interfacial scattering [Elektronische Daten] [M NISHA, M JAYALAKSHMY, J PHILIP] Thermal properties of polymeric nanosolids, obtained by condensing the corresponding nanofluids, are investigated using photothermal techniques. The heat transport properties of two sets of polyvinyl alcohol (PVA) based nanosolids, TiO2/PVA and Cu/PVA, prepared by condensing the respective nanofluids, which are prepared by dispersing nanoparticles of TiO2 and metallic copper in liquid PVA, are reported. Two photothermal techniques, the photoacoustic and the photopyroelectric techniques, have been employed for measuring thermal diffusivity, thermal conductivity and specific heat capacity of these nanosolids. The experimental results indicate that thermal conduction in these polymer composites is controlled by heat diffusion through the embedded particles and interfacial scattering at matrix-particle boundaries. These two mechanisms are combined to arrive at an expression for their effective thermal conductivity. Analysis of the results reveals the possibility to tune the thermal conductivity of such nanosolids over a wide range using the right types of nanoparticles and right concentration. Indian Academy of Sciences, 2013 Polymeric nanosolids nationallicence thermal conductivity nationallicence photothermal techniques nationallicence effective medium theory nationallicence interfacial scattering nationallicence NISHA M. Department of Instrumentation and STIC, Cochin University of Science and Technology, 682 022, Cochin, India aut JAYALAKSHMY M. Department of Instrumentation and STIC, Cochin University of Science and Technology, 682 022, Cochin, India aut PHILIP J. Department of Instrumentation and STIC, Cochin University of Science and Technology, 682 022, Cochin, India aut Pramana Springer India 81/5(2013-11-01), 849-864 0304-4289 81:5<849 2013 81 12043 https://doi.org/10.1007/s12043-013-0605-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12043-013-0605-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- NISHA M. Department of Instrumentation and STIC, Cochin University of Science and Technology, 682 022, Cochin, India aut NATIONALLICENCE 700 1- JAYALAKSHMY M. Department of Instrumentation and STIC, Cochin University of Science and Technology, 682 022, Cochin, India aut NATIONALLICENCE 700 1- PHILIP J. Department of Instrumentation and STIC, Cochin University of Science and Technology, 682 022, Cochin, India aut NATIONALLICENCE 773 0- Pramana Springer India 81/5(2013-11-01), 849-864 0304-4289 81:5<849 2013 81 12043 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer