Dyeing characteristics and functionability of tussah silk fabric with oak bark extract

Abstract

In order to realize the ultraviolet (UV) protection property and antimicrobial activity simultaneously, as well as the natural dyeing process, oak bark extract was prepared and applied to dye tussah silk fabric. The effects of dyeing pH value, temperature, time and mordant kinds on dyeing properties of tussah silk fabric were analyzed. The results indicated that the optimum direct dyeing conditions were as follows: pH 5.0, temperature 98℃, time 80 min. As for the mordant dyeing process, the K/ S values of the post-mordant dyed samples were higher than those of the pre-mordant dyed samples. The color of the direct, aluminum potassium sulfate, copper sulfate and the ferrous sulfate dyed samples were brown, yellow-brown, dark brown and gray black, respectively. The washing, rubbing and light fastness of the three mordants dyed samples were all good. Moreover, the dyed samples showed an excellent UV protection property and antimicrobial activity. The UV protection factor values of the mordant dyed sample were more than 40; the reduction in bacterial count percent against S. aureus and E. coli reached up to and above 85% and 80%, respectively; and the weight gain rate was more than 6%. Furthermore, the dyed samples had good washing durability of the UV protection function and antimicrobial activity even after 50 consecutive launderings.

Phenolic Compounds in the Built Environment

“…Phenolic compounds have also been associated with other bioactivities important for maintaining good health, such as anti-inflammatory, antimicrobial, and antiproliferative activities [21,22]. In addition to the pharmacological interest in these compounds, their biological activities have also been explored in other industry sectors such as food [23,24], cosmetics [22,25], packaging, and textiles [18,26,27].…”

“…In the textile industry, textile production and dyeing is an important source of diverse chemical pollutants, since high amounts of water are contaminated with a heavy load of chemicals. In addition, allergic reactions have been associated with synthetic dyes [26,32]. Consequently, there has been increased interest in the use of phenolic compounds as natural dyes with high biodegradability [26,32].…”

Food Bioactive Compounds and Emerging Techniques for Their Extraction: Polyphenols as a Case Study

“…Polyphenols possess a range of colours that vary from yellow to purple and for this reason, they have been exploited in the development of natural dyes with less toxicity than the conventional ones used in silk and wool fabric dyeing [ 100 ]. Moreover, natural dyes obtained from oak barks (rich in gallotannin, ellagitannin, and quercetin) exerted UV protection and antimicrobial activity when applied to Tussah silk [ 110 ]. UV protection was also achieved by dyeing cotton with phenolic tea extracts [ 111 ].…”

Extraction of polyphenolic substances from bark as natural colorants for wool dyeing

“…In the majority of studies, plant sources growing in tropical or subtropical climates have been considered. For example, extracts of colouring material from the bark of neem , oak , Turkish red pine , hinjal bark and jujube bark have been used for the dyeing of silk. Extracts from the bark of Nypa palm , acacia , mangrove and a number of African plants have been investigated for the dyeing of cotton.…”