Broadening Color Shade of Dyed Wool Fibre with Binary and Ternary Natural Plant Dye Combinations

ABSTRACT

A limited selection of natural dyes’ color impedes the development of textile dyeing with natural plant dyes. Inspiring by the conventional coloration of textiles with a combination of three synthetic dyes generally, the present work is to investigate the broadening color shade of dyed wool fiber with ternary natural dye combinations of madder red (MR), gardenia yellow (GY), and gardenia blue (GB) without mordants in a decamethylcyclopentasiloxane (D5) medium. The wool yarn was wetted in an aqueous solution of pH 3 to own a 300% pickup rate, followed by immersion in a D5 medium containing 2% of alcohol ethoxylate (AEO-3) and solid natural dyes at 90°C for 90 min for coloration. The colorfastness to washing was achieved at a 4–5 for fading and a 5 rating for staining for all colors. The XRD patterns and TGA analysis confirmed that the dyeing procedure did not affect the crystallinity nature and stable thermal tendency. SEM images and cross-sections showed that the dyeing procedure did not damage the morphological structure of the wool fiber surface, and the dyes were evenly distributed. Finally, many color shades of dyed fibers were prepared with various dyes’ ratios.

摘要

天然染料的颜色选择有限，阻碍了天然植物染料染色的发展. 受三种合成染料组合对纺织品常规染色的启发，本工作研究了在十甲基环五硅氧烷（D5）介质中，用茜草红（MR）、栀子黄（GY）和栀子蓝（GB）三元天然染料组合对染色羊毛纤维的增宽色度. 将毛纱在pH为3的水溶液中润湿，使其具有300%的拾取率，然后在90℃下浸入含有2%乙氧基醇（AEO-3）和固体天然染料的D5介质中90分钟进行着色. 所有颜色的褪色色牢度为4-5，染色色牢度为5. XRD图谱和TGA分析证实，染色过程不影响结晶性质和稳定的热趋势. SEM图像和横截面显示，染色过程没有破坏羊毛纤维表面的形态结构，染料分布均匀. 最后，用不同的染料配比制备了多种颜色的染色纤维.

KEYWORDS:

• D5 solvent
• wool dyeing
• natural dye
• color shade
• crystallinity
• thermal stability

关键词:

• D5溶剂
• 羊毛染色
• 天然染料
• 色调
• 结晶度
• 热稳定性

Disclosure statement

No potential conflict of interest was reported by the author(s).

Authors’ contributions

Y.C. and S.H.: conceptualization, methodology, writing – original draft; X.H. and T.J.: conducted the experiments, analyzed the data; M.N.E., M.R., M.N.P., M.M.H., and V.N.: formal analysis, writing – review, and editing; S.H., M.M.H., and V.N.: project administration, funding acquisition, and supervision. All authors have read and agreed to the published version of the manuscript.

Highlights

• Coloration of wool yarn in decamethylcyclopentasiloxane (D5) solvent medium using natural dyes.

• Development of combination shade in a color triangle using madder red, gardenia yellow, and gardenia blue.

• The impacts of various dyeing conditions on the K/S value and the rate of fixation are discussed.

• Excellent color stability, good fixation rate, and acceptable mechanical characteristics were achieved.

Supplementary material

Supplemental data for this article can be accessed online at https://doi.org/10.1080/15440478.2024.2340065

Additional information

Funding

This work was financially supported by the Opening Project of Hubei Provincial Engineering Laboratory for Clean Production and High Value Utilisation of Bio-based Textile Materials, Project Number: [SWJ202106].