Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2020, Vol. 31 ›› Issue (2): 21 doi: 10.1007/s41365-020-0724-x


Stability study of Disperse Blue 79 under ionizing radiation

Xiao-Jun Ding1,2 • Ming Yu3 • Xin Zheng1 • Cui-Cui Ye1 • Yu Gu1 • Man-Li Lu1 • Bo-Wu Zhang3 • Lin-Fan Li1 • Jing-Ye Li1,3   

  1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
    3 The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Lab of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
  • Received:2019-10-06 Revised:2019-11-17 Accepted:2019-12-03
  • Contact: Jing-Ye Li
  • Supported by:
    This work was financially supported by the National Natural Science Foundation of China (Nos. 11875313, 11605274, and 11575277).
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Xiao-Jun Ding, Ming Yu, Xin Zheng, Cui-Cui Ye, Yu Gu, Man-Li Lu, Bo-Wu Zhang, Lin-Fan Li, Jing-Ye Li. Stability study of Disperse Blue 79 under ionizing radiation.Nuclear Science and Techniques, 2020, 31(2): 21     doi: 10.1007/s41365-020-0724-x

Abstract: Ionizing radiation is a promising method for dye degradation or textile coloration using commercial azo dyes and small molecular weight organic dyes. Thus, the stability of the molecular structure of an azo dye is important under ionizing radiation. Disperse Blue 79, as an example azo dyes, was irradiated with gamma rays or electron beam (EB) to investigate the radiation-induced effects on the molecular structure. Ultraviolet visible spectroscopy (UV–Vis), nuclear magnetic resonance (NMR) spectra analysis, and mass spectrometry (MS) studies indicated that acetoxy and methoxyl were easily cleaved on the irradiation of the aqueous dye solution but retained a stable structure on the irradiation of the powder form. Gamma rays and EB showed similar effects on the decomposition process. Chromaticity changes using the Lab* method showed that the dye turned to dark yellow and the value of b* of the irradiated dyes increased with the increasing absorbed dose, which indicated that Disperse Blue 79 could be partly decomposed in an aqueous solution with an absorbed dose of 10 kGy. Furthermore, the results demonstrated that the chemical stability of the Disperse Blue 79 under ionizing radiation are different in its powder form with the dye in the aqueous solution.

Key words: Azo dyes, Disperse Blue 79, Stability, Irradiation