Abstract
Nowadays, more and more attention has been paid to ecological environment problems, and the dyeing and finishing field is no exception. Environmentally friendly dyeing and finishing methods have been extensively studied. Inspired by the bioadhesive force of marine mussels, dopamine (DA) was applied as a dyestuff and investigated in textile dyeing. In this work, dopamine was dyed on silk with a rapid oxidation polymerization in the presence of metal ions (Fe3+) and sodium perborate oxidant (Ox). The polydopamine (PDA) was rapidly deposited on silk fabric and the dyeing process was optimized as follows: the concentration of DA was 2 g·L−1, and that of Fe3+ was 2 mmol·L−1; the total reaction time was 50 min and reacted at 50 °C; 9 mmol·L−1 Ox was added at 20 min. The K/S value of the treated silk fabric reached 11.46. The color fastness of dyed fabric to light fastness reached Level 4. The SEM and AFM tests showed that the particles attached to the fabric surface and increased the roughness. The XPS test further proved that polydopamine (PDA) was deposited on the fabric. The treated fabric also had a good anti-UV property with a UPF >30 and UVA <4%. The water contact angle of treated fabric attained 142.6°, showing better hydrophobicity, and the weft breaking strength was also improved. This environmentally friendly dyeing and finishing method can be applied and extended to other fabrics.
Highlights
In recent years, the problem of environmental pollution has aroused widespread concern [1].The textile industry has become the focus of public opinion because it discharges a large amount of wastewater and pollutes water resources [2,3]
11.0%, 8.4%, 7.56%, 9.1%, and 5.55%, respectively. This is because the content preparation of hydrophobic of silk and DA is different in element composition, and the amount of PDA deposited on silk
Compared with the silk samples treated with DA–Fe3+, the content of Fe–O and Fe–OH groups of the silk treated with DA–Fe3+–Ox increased, and the content of Fe–OH group increased obviously. This may be due to the fact that the addition of Ox accelerated the polymerization of DA, and Fe3+ as the bridge of the complex played a crucial role in and DA is different in element composition, and the amount of PDA deposited on silk surface is different
Summary
The problem of environmental pollution has aroused widespread concern [1]. Natural dyes have low dye uptake on fibers, and the dyed fabrics have poor color fastness, which limits their application [9]. Since Lee [10] used dopamine for the first time as a material modifier, DA has been widely studied and successfully used for preparation of functional materials with excellent performance. Yuan [25] utilized DA’s resistance to acids and bases to improve the corrosion resistance of fabric These methods are unique and ideal, but they all require a long time to obtain a large amount of PDA under alkaline conditions [26], which affects the application of DA in the textile field. A short process of dyeing and functional finishing of silk fabric is put forward
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
