Synthesis, characterization, and properties of ethoxylated azo dyes

Kaihua Shen, Dong Hoon Choi, Zongshi Li

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The nonionic surfactant properties of ethoxylated azo dyes, such as cloud point and surface tension have been investigated. The synthesized ethoxylated azo dyes could dye polyester fabric without any special pre-treatment. When the average number of ethylene oxide (EO) in the ethoxylated azo dye reached 6, its fixation could exceed 90% from the thermosol dyeing process. The average degree of condensation of ethylene glycol in the chain was interrelated with the dyeing results and did not affect on the maximum absorption wavelength (λmax) of the polyoxyethylene dye. When the average length of polyoxyethylene chain decreased, the molecular weight of dyes became smaller and the fixation of dyes was improved.

Original languageEnglish
Pages (from-to)32-37
Number of pages6
JournalFibers and Polymers
Issue number1
Publication statusPublished - 2003
Externally publishedYes

Bibliographical note

Funding Information:
This work was financially supported by the Korea Research Foundation (KRF-2001-005-D00004).


  • Azo
  • Cloud point
  • Ethoxylated reaction
  • Surface tension
  • Thermosol dyeing process

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Polymers and Plastics


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