Synthesis and Characterization of Chromium Doped Y3Al5O12 Compound Pigment
YUE Shi-juan1,2, SU Xiao3, JIANG Han-jie4, LIU Shao-xuan2, HONG You-li5, ZHANG Kai5, HUANG Wan-xia5, XIONG Zu-jiang6, ZHAO Ying6, LIU Cui-ge1*, WEI Yong-ju1, MENG Tao7, XU Yi-zhuang2*, WU Jin-guang2
1. College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050016, China 2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China 3. Linyi Product Quality Supervision and Inspection of Shandong Province, Linyi 276004, China 4. The Experiment High School Attached to Beijing Normal University, Beijing 100032, China 5. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049，China 6. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China 7. Beijing Institute of Graphic Communication, Beijing 102600, China
Abstract：The authors synthesized a new kind of green pigment via co-precipitation method by doping Y3Al5O12 with Cr3+. The size of the pigment particles is around 200 nm as observed under scanning electron microscope. XRD results demonstrate that the pigment crystalline form of the pigment is yttrium alluminium garnet. UV-Vis spectra were used to investigate the coordination states and transition behavior of the doping ions. In addition, the colour feature was measured by CIE L*a*b* chroma value. The pigment was blended with polypropylene and then polypropylene fiber was produced using the polypropelene-pigment composite via molten spinning process. The distribution of the pigment particles in the polypropylene fibers was characterized by X-ray computed tomography (CT) technique on the Beijing synchrotron radiation facility. The result states that the composite oxide pigment particles are homogeneously dispersed in the polypropylene fibers. The pigments are stable, non-toxic to the environment. and may be applied in non-aqueous dyeing to reduce waste water emitted by textile dyeing and printing industry.
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