Surface modification of vulcanized EPDM rubber by Ag (II): Kinetic study of Ag (II) generation and surface characterization

摘要: Ethylene propylene diene monomer (EPDM) rubber has been widely used in the various outdoor and industrial applications. However, order to improve its adhesion properties it needs some surface modification. Mediated electrochemical oxidation by Ag (II) was thus employed evaluate feasibility of EPDM The behavior (I) /Ag redox couple initially studied at different temperatures an electro-membrane cell using IrO2/Ta2O5anode. reversibility reaction improved low temperatures. apparent rate constant for (k1) 3 kA m-2  (s-1). chemistry, morphology wettability activated were then analyzed modified showed a significant decrease water contact angle resulting increase free energy wettability. ATR analysis revealed presence oxygen-containing polar groups on surface. SEM results that short treatment time room temperature only changed surface, which is attributed etching outermost