This study used phospholipids from fresh egg yolks to prepare liposome-encapsulated semi-permanent hair dyes in different pH buffer solutions and evaluated the functions and colour fastness to washing of the dyes. The extraction ratio of egg yolk phospholipids was 5%, and the purity was 91.8%. Empty liposome solutions were then prepared using high-speed homogenizer with particle size 219-848 nm. After being stored at 4 °C for 28 days, the average particle size of the liposome-encapsulated dye formulas increased from 1.36-1.92 µm to 1.99-2.38 µm. The ΔE colour difference values of the five hair extension sets dyed with the control group and hair dyes on the market were of the range 6.56-13.39 after eight times of washing, whereas the ΔE values of the four hair extension sets dyed with the liposome-encapsulated dyes were of the range 3.56-5.21 after eight times of washing. The liposome-encapsulated dye at pH 3 showed the best result.
High density and well surface-distributed oxygen microwave plasma with an extensible antenna-coupling design was utilized to modify a densely weaved and large-surface-area Nylon-6 fabric within a short treatment time. Plasma pretreatment and subsequent acrylic acid (AAc) or 2-hydroxyethyl methacrylate (HEMA) grafting process were studied and optimized at the stage after dyed and finished procedure. The monomer-grafted dyed Nylon-6 fabrics evolved lasting hydrophilic properties and thereafter created or improved surface properties such as water diffusion, drainage, moisture regain and water absorbency, in different degrees. The pHEMA-grafted sample exhibited minor effect in color perception, which was also much hydrophilic than the pAAc-grafted one. Based upon surface analyses and wetting assessment, the penetration of HEMA monomer into the plasma-treated fabric matrix contributed to the facilitation of wetting properties. This work accordingly ensures such plasma-induced system to incorporate with the pattern of hydrophilic properties on the analogous textiles without interrupting their finishing process.
In this study, 750 g of Taiwan plant-baphicacanthus cusia, indigofera tinctoria and polygonum tinctorium, with two reducing agents-60 g sodium hydrosulfite and 12 g thiourea dioxide were added to dye the cotton fabric for 60-90 seconds, 1-15 times repeatedly. After this, take the cloth specimen being dyed for 3 minutes with the 15th times to compare with the original cloth for color difference (∆E). According to the experiment, with the addition of sodium hydrosulfite, ∆E value of the baphicacanthus cusia, indigofera tinctoria and polygonum tinctorium specimen was 71.70, 69.57 and 70.91 respectively, while with the addition of thiourea dioxide, the ∆E value of baphicacanthus cusia, indigofera tinctoria and polygonum tinctorium specimen was 73.43, 68.91 and 65.86 respectively. As for washing fastness test, when indigofera tinctoria was reduced with sodium hydrosulfite, the washing fastness test was rated as grade 3-4. For other specimens, they were just grade 3. In the softness test, when the sodium hydrosulfite was added to indigofera tinctoria, the lowest flexural degree was 5.6 cm. In the ultraviolet resistance test, the sodium hydrosulfite with polygonum tinctorium showed the best result with T% 0.19. The dyed cotton fabric also revealed the characteristic functional peak of indigo blue at 1624 cm-1 via FT-IR test.
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