Nghiên cứu sự truyền dẫn proton trong các chất điện li dẫn proton dạng polyme gel trên cơ sở poly(metylmetacrylat)

Nguyễn Văn Thức, Nguyễn Thị Cẩm Hả

Abstract


The proton-conducting gel electrolytes were prepared by doping of poly(methyl methacrylate) (PMMA) with phosphoric acid solutions in dimethylformamide (DMF). Conductivity activation energy was weak dependent concentrations of polymer; it lies within about7 kJ/mol. At the same time, the viscosity activation energy changed within 14-23 kJ/mol. This difference can be explained by Grotthuss type mechanism of conductivity. On the basis of IR and H-NMR spectroscopy, we reported that phosphoric acid molecules formed hydrogen bonds with PMMA and MTMA, which was the model of a PMMA single fragment. Possible schemes of proton transfer in the gel have been proposed with the solvent and the polymer matrix

Keywords. Mechanism, proton, Grotthuss, gel, polymer.


Keywords


Mechanism, proton, Grotthuss, gel, polymer

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