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Dielectric relaxation of chlorinated polyvinyl chloride stabilized with di-n-octyltin maleate has been studied in the frequency range 1 kHz-1 MHz at various temperatures between 300 and 450 K. A clear dielectric relaxation band (a-type) associated with dipolar polarization has been observed in the studied range. The stabilizer molecules increase the segmental mobility of the polymer, and specific interaction occurs between both the CACl and C¼ ¼O polar groups. The temperature dependence of the relaxation process was analyzed by combining the critical free volume expression by Cohen and Turnbull with the Williams-Landel-Ferry (WLF) model of the thermal expansion of free and occupied volumes.

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In this paper we study the effect of Niad-atoms on the activity of a Pd/Pyy nanocomposite anode, we find that the catalytic activity of an anode towards methanol oxidation increased by threefold in the presence of Niad-atoms.