Study of the colouristic capacity of the natural annatto dye in dyeing polyester fabrics and recycled yarns

IF 2.2 4区 工程技术 Q3 CHEMISTRY, APPLIED
Crisleine Regina Hillesheim, Quethelen Elizabeth Araujo Garcez Rodrigues, Marcela Kotsuka da Silva, Carolina Krebs de Souza, Sávio Leandro Bertoli, Ivonete Oliveira Barcellos, Marcel Jefferson Gonçalves
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Abstract

The textile sector has been the subject of research aimed at discovering more sustainable alternatives to harmful chemicals, and coloration technologies. In this study, the colouristic capacity of the natural annatto dye was evaluated in 100% polyester (PES) fabrics and in 100% PES fabrics with recycled thread. A comparative characterisation of a dye extracted directly from annatto seeds with a commercial natural dye was also carried out. The dyeing processes were conducted with the commercial natural dye at temperatures of 105, 110 and 115°C and pH levels of 4, 4.5 and 5, following a 22 full experimental design including two axial points and triplicate in the central point. The dyed fabric samples were subjected to wash fastness and dry and wet rubbing tests, to evaluate colour quality. The results were analysed using Statistica software, and the 100% PES fabric samples with the best exhaustion values (91.9%), colour intensity (K/S) values (1.44) and satisfactory fastness values were dyed at a temperature of 117°C and pH of 4.5. Furthermore, samples with recycled PES yarn were dyed and compared with conventional PES yarn, demonstrating similar dye and fastness characteristics, as well as intense coloration.

天然红木染料染色涤纶织物和再生纱线的显色性能研究
纺织行业一直是研究的主题,旨在发现更可持续的有害化学品替代品,以及着色技术。在这项研究中,评估了天然红木染料在100%涤纶(PES)织物和100%涤纶织物中的显色能力。还对直接从红木种子中提取的染料与商业天然染料进行了比较表征。染色过程采用商业天然染料,温度分别为105、110和115°C, pH值分别为4、4.5和5,实验设计为22个完整实验,包括两个轴点和三个中心点。对染色织物样品进行洗涤牢度和干湿摩擦试验,评价其颜色质量。使用Statistica软件对结果进行分析,在117°C和pH为4.5的条件下染色,100% PES织物样品的最佳耗色值(91.9%)、色强(K/S)值(1.44)和牢度值令人满意。此外,将再生PES纱线的样品染色并与常规PES纱线进行比较,显示出相似的染色和牢度特性,以及强烈的着色。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Coloration Technology
Coloration Technology 工程技术-材料科学:纺织
CiteScore
3.60
自引率
11.10%
发文量
67
审稿时长
4 months
期刊介绍: The primary mission of Coloration Technology is to promote innovation and fundamental understanding in the science and technology of coloured materials by providing a medium for communication of peer-reviewed research papers of the highest quality. It is internationally recognised as a vehicle for the publication of theoretical and technological papers on the subjects allied to all aspects of coloration. Regular sections in the journal include reviews, original research and reports, feature articles, short communications and book reviews.
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