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<p>The current study investigates the chemical modification of cotton fiber using a commercially available cationic agent (Albafix Eco<sup>®</sup>) through a simple method to enhance the anionic (reactive) dye exhaustion without the need for auxiliaries. In this study, 100% cotton knit fabric was treated with various concentrations of Albafix Eco<sup>®</sup>, ranging from 0.1% to 1%. Subsequently, the modified cotton fabrics were dyed with three reactive dyes: Novacron Navy EC-R, Novacron Ruby S-3R, and Novacron Yellow S-3B, without electrolytes. The FT-IR studies and zeta potential analysis confirmed the successful incorporation of cationic agents into the cellulose outer surface. The key indication was the abrupt increase of surface zeta potential from − 13.3 (pristine cotton fiber) to 17.3 (modified cotton fiber) with uniform coverage of the fiber surface. The highest dye exhaustion (more than 95%) was achieved with fibers modified using a 0.5% Albafix Eco concentration. The highest dye uptake was observed for the modified fabrics when the dyeing bath conditions were neutral pH (pH 7), temperature 60℃, and run for 60&#xa0;min (i.e., Novacron Ruby 90%, Novacron Navy 93%, and Novacron Yellow 98%). The overall colorfastness of the dyed fabric was good to excellent. This study could be an example of a cost-effective way of dyeing cotton with reactive dye that has minimal negative impact on the environment and the highest dyestuff utilization.</p> Graphical Abstract <p></p>

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Facile one-pot modification of cotton fiber with commercial cationic surfactant for salt-free dyeing with reactive dyes

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月12日

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  • Saima Siddika Shuchona,
  • Sharmin Jahan,
  • Anika Banu,
  • Tarikul Islam,
  • Md. Zayedul Hasan,
  • Khairul Islam,
  • Md. Mazbah Uddin,
  • Md. Imranul Islam,
  • M. Mahbubul Bashar

摘要

The current study investigates the chemical modification of cotton fiber using a commercially available cationic agent (Albafix Eco®) through a simple method to enhance the anionic (reactive) dye exhaustion without the need for auxiliaries. In this study, 100% cotton knit fabric was treated with various concentrations of Albafix Eco®, ranging from 0.1% to 1%. Subsequently, the modified cotton fabrics were dyed with three reactive dyes: Novacron Navy EC-R, Novacron Ruby S-3R, and Novacron Yellow S-3B, without electrolytes. The FT-IR studies and zeta potential analysis confirmed the successful incorporation of cationic agents into the cellulose outer surface. The key indication was the abrupt increase of surface zeta potential from − 13.3 (pristine cotton fiber) to 17.3 (modified cotton fiber) with uniform coverage of the fiber surface. The highest dye exhaustion (more than 95%) was achieved with fibers modified using a 0.5% Albafix Eco concentration. The highest dye uptake was observed for the modified fabrics when the dyeing bath conditions were neutral pH (pH 7), temperature 60℃, and run for 60 min (i.e., Novacron Ruby 90%, Novacron Navy 93%, and Novacron Yellow 98%). The overall colorfastness of the dyed fabric was good to excellent. This study could be an example of a cost-effective way of dyeing cotton with reactive dye that has minimal negative impact on the environment and the highest dyestuff utilization.

Graphical Abstract