Khả năng polyme hóa trong điện hóa a-aminonaphtalen trên điện cực PT và thép không gỉ 316L trong H2SO4

Chemical structure of -aminonaphthalene (ANa) allows to deal with its electrochemical polymerisation, analogously as for aniline. To determine the oxidation potentials of ANa, the polymerisation has been realised on Pt electrode using cyclic polarisation. It was found that in sulphuric acid 0.5 M the first oxidation starts at 620 mV/SCE with the peak potential at 760 mV, and the second oxidation at 890 mV/SCE with the peak potential at 1230 mV. The PANa film development decreases the current peaks meaning a reduction of polymerisation rate. In order to realise an electrochemical polymerisation of ANa on stainless steels 316L, the passive film of which possesses a high electric resistance, the potentiostatic polarisation technique has been applied in place of the cyclic voltammetry. Then the formed PANa films were characterised using impedance measurements technique. The obtained results show that electrochemical polymerisation of ANa can be also realised on stainless steel in acid sulphuric solution.