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제128회 대한화학회 학술발표회, 총회 및 기기전시회 Synthesis and Characterization of Dimeric Triphenylmethane Water-soluble Dyes for High-speed Inkjet Printing

2021년 8월 17일 15시 53분 43초
MAT.P-339 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 14일 (목요일) 11:00~12:30
Material Chemistry
저자 및
Seong Hyun Jang, Geonho Lee, Sang Yoon Lee, Jun Choi*
Material & Component Convergence R&D Department, Korea Institute of Industrial Technology, Korea
Digital Textile Printing (DTP) is a process of printing ink with micronized dots using an inkjet printing machine to realize a designed pattern or image directly on a fabric. Digital textile printing has many advantages as follows. Firstly, it shortens the whole process time due to the elimination of screen plate manufacturing process. Secondly, it is an eco-friendly process that can reduce the environmental pollution such as waste-water. Finally, this printing method is suitable for small quantity batch production that can meet the needs of various consumers in a short time. Since DTP inks are printed with fine dots, a wider range of primary colors are required to widen the expression range of the printed pattern or image. Therefore, in this study we designed and synthesized new high-saturation deep blue color acid dyes to increase the expressive power of DTP ink. The synthesized dyes were based on modified triphenylmethane structure and calculated by the DFT method using G16 package b3lyp 6-31g (d) level, geometrical information between the moieties constituting the dye was studied. In order to improve the low water solubility of this moiety, sulfonic acid groups were introduced. At the same time, the various dimeric structures were applied to improve the light resistance and optical properties of the dyes and they were compared with the commercial blue dyes. The prepared water-based inks showed the excellent long-term storage stability by optimizing the physical and rheological properties of the inks. Moreover, they exhibited good ejection performance and well-ordered pattern arrays when applied to high-speed inkjet printing tests.