Volume no :8, Issue no: 2, October 2013

THE INVESTIGATION OF ELECTROCHEMICAL EFFECT OF DIOL COMPOUNDS IN NICKEL ELECTROPLATING BATH

Author's: USTAMEHMETOĞLU BELKIS, SEZER ESMA and KATIRCI RAMAZAN
Pages: [55] - [68]
Received Date: July 1, 2013; Revised September 13, 2013
Submitted by:

Abstract

In this study, the effect of functional groups of 1,4 butynediol (BOZ), 2-butyne-monopropoxylate (BMP), and butynediol ethoxylate (BEO) molecules in nickel electroplating bath was investigated by using electrochemical and computational methods and compared. The initial potential of nickel electroplating shifts the negative area in the presence of organic additive according to the oxygen number in the structure. The shift increased in the order of BOZ, BMP, and BEO. Dipol moment and HOMO-LUMO energies obtained from theoretical calculations explained the reason of the negative area shift of BEO molecule, which consequently led to more bright surface even at lower concentrations and supports the experimental results.

Keywords

nickel electroplating, nickel brightener, butynediol, 2-butyne-monopropoxylate, butynediol ethoxylate.