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Abstract
The ionic liquids I-ethyl-3-methyl imidazolium acetate (EMIA) and l-butyl-3-methyl imidazolium chloride (BMIC) are found to be effective in enhancing the dyeability of wool and silk fabrics with acid and reactive dyes at relatively low temperature. This activation depends on the nature of the substrate and/or the used dye, as well as dyeing conditions. Maximum enhancement in the dyeability was encountered upon treatment of wool fabrics with BMIC when using C.I. Acid Blue 203.
Treatment of wool fiber using (EMIA) has relatively high improvement in its antifelting properties. Elemental analysis has
hown that this treatment reduces the sulphur content of the treated fibers due to removal of some of the wool scales, rich in sulphur, under the action of the ionic liquid EMIA. Scanning electron micrographs reveals that there is removal and deterioration in the
cales of the wool fibre surface; under the action of EMIA, resulting in improvement of its anti-felting properties.
Ionic liquids have antibacterial potential. In this study the fixation of the ionic liquid on the wool fabric has been done bye the pretreatment of the fabric with the anionic agent sodium, 4-(4,6¬dichloro-I,3,5-triazinylamino )-benzene sulphonate, followed by treatment with the ionic liquid (cationic agent). I-butyl 3-methyl imidazolium bromide (BMIB) and BMIC, were used to impart durable antimicrobial properties to the fabric. The pretreatment with the anionic agent increases the anionic sites and thereby exhaustion and stability of the ionic liquid onto wool keratin.
Ionic liquids have been used in dissolution of different natural materials. The dissolution has been carried out by traditional heating or by short microwave irradiation.
A wool/viscose composite was prepared by mixing their olutions in EMIA and the solution was subjected to an electrospinning process to give a wool/viscose nanofibres.
Key Words: Wool fibres, proteinic and regenerated fibres, lomc liquids,