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<p>The sustainable integration of natural essential oils into textile substrates produces multifunctional and aroma-active fabrics. In the present investigation, citronella and lavender oils were microencapsulated within a chitosan–tetraethyl orthosilicate (TEOS) hybrid sol–gel matrix containing SiO<sub>2</sub> and subsequently deposited onto cotton fibres. The particle size of SiO<sub>2</sub> sol–gel matrix is 100–200&#xa0;nm. Successful encapsulation and fibre-surface deposition were corroborated by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Gas chromatography–mass spectrometry (GC–MS) validated the chemical stability of the entrapped aromatic compounds, while thermogravimetric analysis (TGA) demonstrated improved thermal stability of the fabric compared to neat one. After treatment, increase in fabric weight up to 14.5% was observed. Sensory evaluation and repeated-laundering assays revealed sustainability up to five washes and superior wash fastness compared with untreated controls. These results substantiate the potential of the above systems as eco-benign platforms for imparting durable, controlled-release aromatic functionality to cellulosic textiles.</p>

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Eco-Friendly encapsulation of Biogenic Oils for Sustainable Aroma Finished Cotton Fabrics

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • Karishma Hemani,
  • Shraddha Nitturkar,
  • M. P. Sathianarayanan

摘要

The sustainable integration of natural essential oils into textile substrates produces multifunctional and aroma-active fabrics. In the present investigation, citronella and lavender oils were microencapsulated within a chitosan–tetraethyl orthosilicate (TEOS) hybrid sol–gel matrix containing SiO2 and subsequently deposited onto cotton fibres. The particle size of SiO2 sol–gel matrix is 100–200 nm. Successful encapsulation and fibre-surface deposition were corroborated by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Gas chromatography–mass spectrometry (GC–MS) validated the chemical stability of the entrapped aromatic compounds, while thermogravimetric analysis (TGA) demonstrated improved thermal stability of the fabric compared to neat one. After treatment, increase in fabric weight up to 14.5% was observed. Sensory evaluation and repeated-laundering assays revealed sustainability up to five washes and superior wash fastness compared with untreated controls. These results substantiate the potential of the above systems as eco-benign platforms for imparting durable, controlled-release aromatic functionality to cellulosic textiles.