Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Dyeability of Chito-oligosaccharide Treated Cotton Fabric to Reactive Dyes

Chito-oligosaccharide로 처리된 면직물의 반응성 염료에 대한 염색성

  • 장진호 (서울대학교 공과대학 섬유고분자공학과) ;
  • 신민승 (서울대학교 공과대학 섬유고분자공학과) ;
  • 성하수 (서울대학교 공과대학 섬유고분자공학과) ;
  • 고석원 (서울대학교 공과대학 섬유고분자공학과)
  • Published : 1999.06.01

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Abstract

Large amount of salt and alkali is usually added to dyebath in the conventional reactive dyeing of cotton due to the low substantivity of reactive dyes to cotton, hence resulting in high discharge levels of dyes as well as salt and alkali. This study intends to increase the interaction between the dye and cellulose fiber by incorporating amine groups to the fiber using a chito-oligosacchride (COS). The COS was prepared by depolymerizing a chitosan, whose degree of deacetylation is 99.3%, with sodium nitrite. With increasing COS content in the cotton fabric, the amount of salt and alkali required for the dyeing was reduced significantly and at the same time higher K/S value was obtained compared with the untreated. Also the color fastness of COS treated cotton fabric were similar to those of the untreated fabrics.

Keywords

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