The influence of micronization on the properties of Pr-ZrSiO4 pigment. (June 2018)

• Record Type: Journal Article
• Authors: Guo, Dazhi; Yang, Qing; Chen, Pengcheng; Chu, Yanhui; Zhang, Yi; Rao, Pinggen
• Is Part Of: Dyes and pigments. Volume 153(2018)
• Page Start: 74
• Page End: 83
• Publication Date: 2018-06
• Subjects: Pr-ZrSiO4 pigment -- Micronization -- Color performance -- Rietveld refinement -- XPS -- Surface enrichment; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2018.01.049
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: Commercial Pr-ZrSiO4 yellow pigment was milled into different particle sizes in order to investigate the influence of micronization on its properties. The research showed that micronization resulted in a significant color deterioration, accompanied by the pigment color changing from intense reddish-yellow to light yellow. Rietveld refinement analysis indicated that micronization caused intense crystallite size refinement and induced considerable microstrain in Pr-ZrSiO4 crystals. The reduction in particle size enhanced the light scattering and thus slightly diminished the color saturation of Pr-ZrSiO4 pigment. Micronization induced a significant decrease of Pr content in the surface layer of milled pigment particles due to the non-uniform distribution of Pr in unmilled pigment particles (i.e., enriched in the particles' surface layer). The milling-induced decrease of Pr content in the surface layer was the main reason for the color deterioration. Graphical abstract: Highlights: The influence of micronization on the properties of Pr-ZrSiO4 was investigated. Micronization caused a significant color deterioration in milled pigments. Micronization induced a decrease of Pr content in milled particles surface layer. The decrease of Pr content was the main reason for the color deterioration.