What Does anionic and cationic Mean?
Tribological assessments ended up carried out employing a ball-on-disc T-11 tester. The balls ended up fabricated from steel, Whilst the discs had been made from steel, aluminium oxide, zirconium oxide, polyamide and poly(methyl methacrylate). The outline from the product as well as techniques has been supplied in the literature (Szczerek and Tuszy