AI Insight
This study developed environmentally friendly black ceramic inkjet inks using nickel-substituted cobalt-iron-chromium oxide spinel pigments that are free from alkylphenol ethoxylates (APEO), which are harmful surfactants. The researchers synthesized CoFeCrO4 spinel pigments with varying nickel substitution levels and formulated them into inkjet inks suitable for ceramic tile decoration. The APEO-free formulations demonstrated stable dispersion, appropriate rheological properties for inkjet printing, and produced deep black colors after firing on ceramic substrates.
Why it matters
This research addresses environmental and health concerns in the ceramic tile industry by replacing toxic APEO surfactants with safer alternatives while maintaining high-quality black coloration. The development enables ceramic manufacturers to produce decorative tiles using more sustainable inkjet printing processes that comply with stricter environmental regulations.
Understand the Science
Source: APEO-free black ceramic inkjet ink formulations based on Ni-substituted CoFeCrO4 spinel pigments