Surface Activity of Polyethers on Copper and Tin Substrates

Qj and respectively. Time-independent parameters of Qj were found to be as follows Yq = 0.37 0.02 2 cm s with n = 0.48 0.02. The value of Warburg coefficient calculated for the 0.01 M Sn(II) solution with D given is equal to 0.384 2 cm s° and fairly coincides with the experimental value. The exponent n obtained for varies between 0.88 and 0.91, this being indicative of a capacitive 

It should be noted that the adsorption of polyethers with a high molecular mass (laprol or sintanol) occurs significantly faster a steady state can be attained in 5-10 min. The results obtained give grounds to suppose that the adsorption of surfactant is the main factor responsible for the inhibition of cathodic process. From this point of view, voltammetric data might be treated invoking a simple kinetic model. According to it, the active and passive sites with different current 

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