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<p>The development of aromatic cotton fabrics (ACF) applications has attracted much attention, and traditional crosslinking agents are unsuitable for the current textile industry. Inspired by marine mussels, a novel bionic adhesion nanocapsule was prepared by the emulsion template method, with covalently crosslinked quaternized chitosan/polydopamine (QCS/PDA) as the wall material and lavender essential oil (LEO) as the core material. LEO nanocapsules were acid-responsive, exhibited durable adhesion and effective antibacterial activity, inhibiting both <i>Staphylococcus aureus</i> and <i>Escherichia coli</i>, with a more significant inhibitory effect on the latter (inhibition rate of over 95%). Subsequently, ACF with good washing resistance was prepared by further adhering to cotton fabrics during impregnation. Following 25 washing cycles, only 1% of LEO remained in the ACF treated with essential oil, whereas the ACF treated with nanocapsules (QCS/PDA) retained 13% of LEO. This enhanced washing resistance is due to a strong adhesion mechanism combining chemical crosslinking (covalent bond between PDA and cellulose/QCS) and electrostatic interaction (quaternary ammonium group of QCS and negatively charged cotton fiber). This work provides new insights and promising research directions to promote the diversification of functional textiles.</p>

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Preparation of Catechol-Based Nanocapsules with pH Responsiveness and Their Application on Cotton Fabrics

  • 期刊论文

  • 发表日期：

    2025年9月11日

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  • Di Zhao,
  • Yue Chen,
  • Zhibin Li,
  • Yunwei Niu

摘要

The development of aromatic cotton fabrics (ACF) applications has attracted much attention, and traditional crosslinking agents are unsuitable for the current textile industry. Inspired by marine mussels, a novel bionic adhesion nanocapsule was prepared by the emulsion template method, with covalently crosslinked quaternized chitosan/polydopamine (QCS/PDA) as the wall material and lavender essential oil (LEO) as the core material. LEO nanocapsules were acid-responsive, exhibited durable adhesion and effective antibacterial activity, inhibiting both Staphylococcus aureus and Escherichia coli, with a more significant inhibitory effect on the latter (inhibition rate of over 95%). Subsequently, ACF with good washing resistance was prepared by further adhering to cotton fabrics during impregnation. Following 25 washing cycles, only 1% of LEO remained in the ACF treated with essential oil, whereas the ACF treated with nanocapsules (QCS/PDA) retained 13% of LEO. This enhanced washing resistance is due to a strong adhesion mechanism combining chemical crosslinking (covalent bond between PDA and cellulose/QCS) and electrostatic interaction (quaternary ammonium group of QCS and negatively charged cotton fiber). This work provides new insights and promising research directions to promote the diversification of functional textiles.