Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Dyeing of Nylon 66 Woven Fabric Using Methyl Orange and Color Change in Acidic Solution

Methyl Orange를 이용한 나일론 직물의 염색 및 산성용액 접촉에 따른 색 변화

  • Lee, So Hyun (Department of Fiber System Engineering, Dankook University) ;
  • Kang, Chae Lin (Department of Fiber System Engineering, Dankook University) ;
  • Park, Jin Hee (Department of Fiber System Engineering, Dankook University) ;
  • Lee, Jung Jin (Department of Fiber System Engineering, Dankook University)
  • 이소현 (단국대학교 파이버시스템공학과) ;
  • 강채린 (단국대학교 파이버시스템공학과) ;
  • 박진희 (단국대학교 파이버시스템공학과) ;
  • 이정진 (단국대학교 파이버시스템공학과)
  • Received : 2020.03.06
  • Accepted : 2020.04.12
  • Published : 2020.04.30
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Abstract

Strong acids, such as hydrochloric acid and sulfuric acid, are colorless and are not easily detected when leaked. Halochromic dyes can be used for detecting strong acids because they show different colors when exposed to acid liquids. In this study, methyl orange was used as a pH-indicating dye in detecting acid liquids. Nylon 66 woven fabric was dyed with methyl orange, and the dyeing properties were determined, along with the pH-sensing property, colorfastness, and fixing agent effect. Methyl orange in an aqueous solution showed maximum absorption at 464 nm with orange color at a pH of 5-10, whereas the maximum absorption changed to 507 nm showing red color at a pH of 2. Nylon 66 dyed with methyl orange exhibited a good color yield (K/S), and the dyeing property was influenced by the pH and dye concentration. When the dyed sample was immersed in a solution with a pH range of 3.5-4.0, its original orange color was maintained. Then, the color turned to reddish-orange when immersed in a solution of 2.0-3.0 pH and red in a pH 1.5 solution. The acid-sensing property was retained after fixing agent treatment. The wash and water fastness of the dyed fabrics varied from poor to very poor, and the fastness of the staining was improved to a moderate level by fixing agent treatment. The lightfastness indicators before and after the application of fixing agent treatment were moderate and good, respectively.

Keywords

Acknowledgement

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

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