Synthesis of γ-Ce2S3 colorant under low temperature and its coloring properties for PE and PVC

A series of cerium sulfides were successfully prepared using commercially available nanoscale CeO 2 as precursor, anhydrous Na 2 CO 3 as dopants, CS 2 as sulfur source, under 600–800 °C, respectively. Properties of samples were investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and spectrophotometry. The results showed that corresponding γ-Ce 2 S 3 with small size was obtained by using nanoscale CeO 2 as precursor; pure phase γ-Ce 2 S 3 could be obtained under low temperature of 700 °C. Coloring properties of γ-Ce 2 S 3 obtained under 800 °C were studied by researching γ-Ce 2 S 3 /PE and γ-Ce 2 S 3 /PVC composites, respectively. The results showed that satisfied coloring effects to PE and PVC were obtained by using 0.5 phr and 0.2 phr γ-Ce 2 S 3 , respectively.