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<p>Plant-based dyes have drawn great interest recently owing to environmental friendliness and versatility. Unfortunately, their application potentials in textile dyeing have been significantly weakened as the result of low dyeing affinity and undesirable color fastness. Herein, a novel plant dyed cotton fabric with ultraviolet resistance and antioxidant properties was created by introducing tannic acid (TA) and polyethyleneimine (PEI) as a platform for binary synergistic effects. The enhanced mechanism of binary systems was revealed through a combination of response surface methodology (RMS) and dye thermodynamic kinetics analysis. Compared with unmodified fabrics, the K/S values of dyed fabrics (e.g. mulberry) modified with TA and PEI increased by 9.2 times, while maintaining excellent level-dyeing capability and washing fastness. Furthermore, the ultraviolet protection factor and antioxidant capacity of modified dyed fabrics separately increased by about 3.1 and 26.6&#xa0;times in comparison to simple dyed fabrics. The study may offer a new and convenient insight into the development of durable, multifunctional plant dyeing techniques.</p>

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Enhanced dyeing performance, UV resistance and antioxidant properties of plant dyes based on a binary synergistic effect

  • 期刊论文

  • 发表日期：

    2025年4月9日

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  • Jing Cao,
  • Caiyun Zhang,
  • Peibo Du,
  • Min Song,
  • Zaisheng Cai,
  • Hongguo Gao,
  • Fengyan Ge

摘要

Plant-based dyes have drawn great interest recently owing to environmental friendliness and versatility. Unfortunately, their application potentials in textile dyeing have been significantly weakened as the result of low dyeing affinity and undesirable color fastness. Herein, a novel plant dyed cotton fabric with ultraviolet resistance and antioxidant properties was created by introducing tannic acid (TA) and polyethyleneimine (PEI) as a platform for binary synergistic effects. The enhanced mechanism of binary systems was revealed through a combination of response surface methodology (RMS) and dye thermodynamic kinetics analysis. Compared with unmodified fabrics, the K/S values of dyed fabrics (e.g. mulberry) modified with TA and PEI increased by 9.2 times, while maintaining excellent level-dyeing capability and washing fastness. Furthermore, the ultraviolet protection factor and antioxidant capacity of modified dyed fabrics separately increased by about 3.1 and 26.6 times in comparison to simple dyed fabrics. The study may offer a new and convenient insight into the development of durable, multifunctional plant dyeing techniques.