Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Wool Dyeing with Bromocresol Green for Halochromic Textile Sensors

브로모크레졸 그린(Bromocresol Green)의 할로크로믹 특성을 이용한 양모 섬유 기반 산검출 텍스타일 센서 연구

  • Go, Seung Hyo (Department of Fiber System Engineering, Dankook University) ;
  • Lee, Ye Jin (Department of Fiber System Engineering, Dankook University) ;
  • Lee, Jung Jin (Department of Fiber System Engineering, Dankook University)
  • 고승효 (단국대학교 파이버시스템공학과) ;
  • 이예진 (단국대학교 파이버시스템공학과) ;
  • 이정진 (단국대학교 파이버시스템공학과)
  • Received : 2022.03.15
  • Accepted : 2022.04.23
  • Published : 2022.04.30
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Abstract

Recently, the safety of workers in industries has emerged as an important issue. In particular, when the workers are exposed to gaseous or liquid acids, it can lead to a serious problem to the human body. In the previous studies, we investigated the application of halochromic dyes on a nylon fabric for an acid-detecting textile chemosensor. In this study, bromocresol green was selected as a pH-indicating dye and its dyeing, fastness, and acid-sensing properties on a wool woven fabric were investigated. Bromocresol green in an aqueous solution of pH 2-4 showed maximum absorption at 444 nm with yellow color, whereas the maximum absorption changed to 616 nm showing blue color in a solution of pH 6 and over. Color yields (K/S) of bromocresol green on wool were dependent on the dyebath pH. The wool fabric showed greenish blue color when dyed at pH 4-7. The color of wool dyed at pH 3 was yellowish green, and the color at pH 2 was olive. The percent exhaustion of bromocresol green on wool increased with decreasing the dyebath pH, and a high exhaustion value of 98-99% could be obtained at pH 2-4. When the control sample, dyed at pH 4, was immersed in a solution of pH 3.5-4, its original greenish blue color was maintained. When immersed in a solution of pH 2-3, the color changed into olive with exhibiting a big color difference. The soaping process did not affect the color fastness. The wash and dry cleaning fastness of the wool fabric dyed at pH 3-5 was very good. The dry and wet rubbing fastness were excellent.

Keywords

Acknowledgement

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. 2019R1F1A1062860).

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