Metallisation on ABS plastics using fine-bubbles low ozonated water complying with REACH regulations.

Traditionally, a highly concentrated mixed solution of chromic acid and sulphuric acid has been used as an etchant for electroplating on ABS plastics. However, this etchant is hazardous and the subject of impending legislation. Therefore, the fine-bubbles low ozonated water treatment as an alternative to the chromic acid etching process has been investigated. Adhesion strengths of 0.9–1.0 kN m−1were obtained for treatment of 30 min. From the observation of surface morphology, dimples of several hundred nanometres were formed after surface modification. Cross-sectional observation of the interface suggested that formation of a thin nano-porous anchor layer on the ABS surface was responsible for plating adhesion. This method with low ozonated water treatment provides an environmentally friendly process for plating on ABS. [ABSTRACT FROM PUBLISHER]