Polymer studies silver electrode

Based on the coated silver and copper wire design, an electrode for determination of quininium cation was developed [48], The ion-sensitive compounds dissolved in the polymer membrane were reineckate (Rn ), phosphotungstate (PT ) and phosphomolybdate (PM ) ions. The electrodes were tested in terms of deviation, life span, pH effect and the effect of the interfering ions. The electrodes were used in practice for determination of an active ingredient in pharmaceutical preparations. Studies show that the Ag-coated electrode with phosphotungstate as the anti-ion shows different properties in terms of precision of determination and the preferences of the silver electrode as the internal reference. 

The electronic conductivity of pristine polybenzimidazole is very low and practically it behaves as an insulator [73]. The first published studies on the proton conductivity of polybenzimidazoles were conducted in the early 1970s, although under poorly defined experimental conditions. In the pristine form the conductivity of poly (2,5-trimethylene benzimidazole) was recorded to 10 S cm using silver paste electrodes on a pressed tablet of the polymer [74]. Under... 

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