Sustainable wool fabric pad dyeing using reactive dyes in silicone non-aqueous medium

Cao, Weizhong; Pei, Liujun; Zhang, Hongjuan; Wang, Jiping

doi:10.1007/s10311-020-01078-7

Cited by 16 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15 To solve this problem, water-less/free dyeing technologies have been widely explored. 16,17 Currently, a water-less/free dyeing process has been achieved by using an organic solvent, which not only acts as a solvent for the dye but also takes the role of an assistant reagent, thus contributing to dye absorption. 18 In general, organic solvents can be divided into two categories, namely hydrophilic and hydrophobic organic solvents.…”

Section: Introductionmentioning

confidence: 99%

An innovative, low-cost and environment-friendly approach by using a deep eutectic solvent as the water substitute to minimize waste in the textile industry and for better clothing performance

et al. 2022

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

An innovative, low-cost and environment-friendly approach by using a deep eutectic solvent as the water substitute to minimize waste in the textile industry and for better clothing performance

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In addition, Yang et al found that wool can be dyed in a DMSO/DMC binary hybrid system without water, but the hydrogen bond network structure of the wool fiber is significantly disrupted, and the recycling of the solvent is still worth considering. In recent years, Wang et al , found that almost 100% of reactive dyes can be adsorbed on cotton textiles without using any salts in non-aqueous dyeing systems, and the fixation rate of reactive dyes (80% similar to 90%) is higher than that of a traditional dyeing system (40% similar to 50%) . Researchers found that decamethylcyclopentasiloxane (D5) is a good dyeing medium, mainly due to the low surface tension, strong hydrophobic nature, and good thermal conductivity; , these properties make it easy to spread over the fiber surface and transfer the heat required for dyeing the fibers evenly.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, Wang et al 16,17 found that almost 100% of reactive dyes can be adsorbed on cotton textiles without using any salts in non-aqueous dyeing systems, and the fixation rate of reactive dyes (80% similar to 90%) is higher than that of a traditional dyeing system (40% similar to 50%). 18 Researchers found that decamethylcyclopentasiloxane (D5) is a good dyeing medium, mainly due to the low surface tension, strong hydrophobic nature, and good thermal conductivity; 19,20 these properties make it easy to spread over the fiber surface and transfer the heat required for dyeing the fibers evenly. Thus, D5 has the potential to become a fixation medium to be implied in the pad dyeing method.…”

Section: Introductionmentioning

confidence: 99%

Environment-Friendly High-Efficiency Continuous Pad Dyeing of Non-Shrinkable Wool Fabric by the Silicon Fixation Method without Auxiliary Chemicals

Luo

Zhai

Pei

et al. 2022

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

Conventional pad dyeing methods rely on auxiliary chemicals and consume high energy and a large amount of water to achieve continuous or semicontinuous pad dyeing. Here, a new continuous pad dyeing method was developed by using decamethylcyclopentasiloxane (D5) as the fixation medium; nonshrinkable wool fabric obtained an incredible fixation rate of up to 99% without auxiliary chemicals in the dyeing process. In this work, the optimal temperature and time of the D5-fixation process was 100 °C for 1 min. Compared with conventional dyed samples, nonshrinkable wool fabric with D5-fixation exhibited a better dye penetrability and higher color-fastness, color strength, and area shrink. Furthermore, the results of XRD, FT-IR spectroscopy, and SEM analyses indicated that D5 has no influence on the surface structure, micro-structures, and color properties of wool fabrics. Also, the wool fabrics exhibited good color properties with reused D5. This new continuous rapid pad dyeing method shows a lower commercial level with reduced consumption and nearly half of the wastewater compared with conventional pad dyeing methods, which has a considerable potential to promote the development of a sustainable continuous pad dyeing technology. D5-fixation has the potential to replace the cold pad-batch and steam fixation and would substantially reduce the environmental footprint and achieve real continuous pad dyeing in the conventional dyeing process.

show abstract

“…Based on the analysis of the development of the textile dyeing industry, a non-aqueous medium (for example liquid paraffin, siloxane, vegetable oil, etc.) dyeing technology, as an environment-friendly dyeing method instead of water base dyeing, 30,31 has achieved salt-free, dyeing of hydrophilic fibers such as cotton fibers without discharging wastewater. 32 The main reason for salt-free dyeing is that reactive dyes have no interaction with the dyeing medium, but have good affinity with cotton fibers.…”

mentioning

confidence: 99%

Level dyeing property and aggregation morphology of reactive black 5 on cotton fabric in a salt-free and less-water dyeing system

Hu,

Pei,

Shen

et al. 2023

Textile Research Journal

Self Cite

View full text Add to dashboard Cite

In a traditional water-based dyeing system, large amounts of salts and water are consumed. However, a non-aqueous media dyeing system achieves salt-free and less-water dyeing. In a non-aqueous media dyeing system, a small amount of water is used, which may affect the aggregation morphology of the dyes. The molecular dynamics of reactive dyes on the surface of cotton fibers were investigated. The results showed that the color depth of dyed cotton fabric did not change much when the dosage of salt was below 5.2% o.w.f. However, continuing to increase the amount of salt could influence the dyeing level of dyed fabric. The diffusion coefficient of dye was 0.3044 × 10−5 cm−2/s when there was no salt in dyeing system. But it was decreased by 14.03% and 16.62% when the salt concentration was increased from zero to 5.2% and 13% o.w.f., respectively. When the concentration of sodium sulfate was zero, the dye molecules in the solution displayed in the form of unimolecular molecules and dimers. However, reactive dyes mainly existed in the form of trimers and polymers when the concentration of sodium sulfate was above 5.2%. When there was no salt in the less-water dyeing system, the van der Waal energy between fiber and dye was 131.29 kJ/mol, but it was increased to 382.92 kJ/mol when the dosage of sodium sulfate was 5.2%. Therefore, with the increase of sodium sulfate dosage, the color depth of the dyed fabric changed little, but the level of dyeing property became poorer.

show abstract

Sustainable wool fabric pad dyeing using reactive dyes in silicone non-aqueous medium

Cited by 16 publications

References 24 publications

An innovative, low-cost and environment-friendly approach by using a deep eutectic solvent as the water substitute to minimize waste in the textile industry and for better clothing performance

An innovative, low-cost and environment-friendly approach by using a deep eutectic solvent as the water substitute to minimize waste in the textile industry and for better clothing performance

Environment-Friendly High-Efficiency Continuous Pad Dyeing of Non-Shrinkable Wool Fabric by the Silicon Fixation Method without Auxiliary Chemicals

Level dyeing property and aggregation morphology of reactive black 5 on cotton fabric in a salt-free and less-water dyeing system

Contact Info

Product

Resources

About