Vezzu, Keti; Nawn, Graeme; Pagot, Gioele; Negro, Enrico; Nale, Angeloclaudio; Bang, Yannick Herve; Conti, Fosca; Cavinato, Gianni; Di Noto, Vito published the artcile< Relaxation phenomena and conductivity mechanisms in anion-exchange membranes derived from polyketone>, Safety of Pyridin-4-ylmethanamine, the main research area is relaxation conductivity anion exchange membrane polyketone.
A polyketone-b-poly[N-(4 Me-methylpyridium)-ethylenepyrrole+][X-], with X- = I- or OH-, was studied as an example of anion-exchange membrane with potential applications in fuel cells. The polyketone starting material PK and the functionalized polyketones Pyr-FPKmI and Pyr-FPKmOH were studied via Broadband Elec. Spectroscopy (BES) to understand the conductivity mechanism. BES signals are collected in the frequency range of 10-2 – 107 Hz and from -100° to 120°. BES measurements reveal up to three interdomain polarizations phenomena, one electrode polarization event and two β dielec. relaxation modes for both wet Pyr-FPKmI and Pyr-FPKmOH. Ion conductivity for Pyr-FPKmI and Pyr-FPKmOH is 0.0086 and 0.0105 S cm-1 at 80°, resp. The overall conductivity mechanism is attributed to the superposition of two conduction pathways, via delocalization bodies and via interdomain percolation pathways, which are associated with two different phys. phenomena.
Electrochimica Acta published new progress about Anion exchange membranes. 3731-53-1 belongs to class pyridine-derivatives, and the molecular formula is C6H8N2, Safety of Pyridin-4-ylmethanamine.