Fabrication of Electroplated Nickel Composite Films Using Cellulose Nanofibers Introduced with Carboxy Groups as Co-Deposited Materials

In this study, the fabrication of nickel (Ni)-cellulose nanofiber (CNF) composite electroplating films was attempted using sodium carboxymethyl cellulose (CMC) and 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO)-oxidized CNF as introduced with carboxy groups. As a result, co-deposition confirmed for both CNFs, former showed 82% improvement in surface Vickers hardness compared to plated film deposited from conventional Watts bath without CNF. Although latter slightly inferior 71% improvement, roughness measurement smoother than that copper material C1100. On other hand, CMC had rough surface. The image analysis distance between co-deposited on 40% shorter specimen TEMPO CMC, indicating fine dispersion obtained. addition, model proposed which Ni is chelate complex formed carboxylate ions. fixed by deposition simultaneous bond hydrogen ions carboxylate, resulting return group.