Abstract
The thermal properties (thermal diffusivity a, thermal conductivity λ, and volumetric heat capacity ρC p) of aqueous solutions of polyvinylpyrrolidone (PVP) were measured in the temperature range 20–80°C. The measurements were carried out using the hot-wire (strip) technique. Three different average molecular weights of PVP were used [M = 10,000 (PVP-10), M = 24,500 (PVP-24.5), and M = 40,000 (PVP-40)], i.e., the average degrees of polymerization are 90, 220, and 360, respectively. The results show that the values of the thermal properties depend on the temperature and the concentration of PVP in the medium. The mechanism of heat transfer was discussed. The role of convection and radiation were taken into consideration.
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Dakroury, A.Z., Osman, M.B.S. & El-Sharkawy, A.W.A. Thermal properties of aqueous solutions of polyvinylpyrrolidone in the temperature range 20–80°C. Int J Thermophys 11, 515–523 (1990). https://doi.org/10.1007/BF00500843
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DOI: https://doi.org/10.1007/BF00500843