| Affiliation: | 1. Beijing University of Chemical Technology, State Key Laboratory of Organic-Inorganic Composites, 100029 Beijing, China
Beijing University of Chemical Technology, Research Center of the Ministry of Education for High Gravity Engineering and Technology, 100029 Beijing, China;2. Jiangsu Yabang Dyes Co. Ltd, 213163 Changzhou, China;3. Beijing University of Chemical Technology, Research Center of the Ministry of Education for High Gravity Engineering and Technology, 100029 Beijing, China;4. Coal Science and Technology Research Institute Company, Mine Oil Products Branch, 100013 Beijing, China;5. Beijing University of Chemical Technology, State Key Laboratory of Organic-Inorganic Composites, 100029 Beijing, China |
| Abstract: | Disperse dyes are poorly water-soluble and difficult to stably disperse in an aqueous medium, which greatly limits their application in dyeing synthetic fibers. Micronization can solve this problem. Herein, a facile way to prepare stable aqueous nanodispersions of disperse dye (C.I. disperse yellow 54) is presented by combining high-gravity antisolvent precipitation in a rotating packed bed (RPB) with spray drying. The as-prepared product had an average particle size of 120 nm, which could be readily redispersed in water. Compared with raw dye, the wettability and dispersibility of disperse dye nanoparticles were remarkably improved. Furthermore, the dyeing properties of the nanodispersions were obviously better than those of the commercial dye, which was micronized by ball milling. |
