Inclusion complex of monochlorotriazine-beta-cyclodextrin and wormwood oil: preparation, characterization, and finishing on cotton fabric

The suitable size hydrophobic cavity and monochlorotriazinyl group as a reactive anchor make monochlorotriazine-beta-cyclodextrin (MCT-β-CD) to be widely used in fabric finishing. In this paper, the inclusion complex of monochlorotriazinyl-beta-cyclodextrin (MCT-β-CD) with wormwood oil was synthesized and characterized by UV–Vis, FT-IR, TGA/DSC, and SEM. A 1:1 stoichiometry was confirmed by UV–Vis and fluorescence spectral analysis. The maximum absorption wavelength of the inclusion complex is shifted to 201 and 243 nm, indicating the strong intermolecular interactions between wormwood oil and MCT-β-CD. The band at 1579 cm−1 in the IR spectrum reveals that monochloroazinyl group in MCT-β-CD exists in ketone form but not in anion form. The noticeable IR shift of υ(C=C) reveals that wormwood oil molecule stays inside the cavity of MCT-β-CD. TG/DSC shows that the stability of wormwood oil is increased significantly by complexing with MCT-β-CD. The cotton fabric was finished with inclusion complex solution; IR and TG/DSC analyses prove that MCT-β-CD has been grafted on the cotton fabrics successfully. Weightlessness rate test shows that the finished cotton fabric has a good resistance to washing fastness.

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