Avocado seeds in Viet Nam have more polyphenol content and high antioxidant activity. Avocado seeds have a large amount of common waste every day, and they are not used much for other purposes. This investigation is aimed to set up the proper dyeing methods for cotton fabric 100% based on extracting colorants from avocado seeds. Dyeing solutions were created by dissolving minced avocado seeds with the right moisture in distilled water at 60oC for 60 minutes. The liquor ratio used in the investigation is 1:10 for the extraction process and 1:30 for the dyeing condition. The most suitable dyeing parameters were achieved at a dyeing temperature of 60oC, a dyeing time of 60 minutes with a dyeing solution concentration of 75% v/v, and pH=7. Moreover, the common mordanting chemicals such as Tannin, CuSO4.5H2O, and FeSO4.7H2O were mordanted on cotton fabrics, which aimed to check how the color bonding level is strong or weak through values in the color system including DE, L*a*b*, K/S. It can realize that mordanting chemicals had a strong impact on color fastness and color hue changes of cotton when dyed with solutions from avocado seeds that can create a diverse and attractive natural color collection.
The researchers investigated the curcumin colorant of turmeric, extracted directly from fresh turmeric. Investigating different dyeing conditions such as pH, dye concentration, microwave power, and dyeing time to determine the optimal conditions of a 100% cotton fabric dyeing process using a complementary dyeing method with microwave assistance. Optimal results were obtained with the following parameters: extraction ratio: 1:10, dyeing: pH 2–3, dyeing ratio: 1:30, dye concentration: 100%, microwave power at the level: high, dyeing time: 3 min and using 5% mordant CuSO4.5H2O. Washing fastness testing is a way of assessing the quality of dyed samples
Theresearchersinvestigatedthecurcumincolorantofturmeric,extracteddirectlyfromfreshturmeric.Investigating different dyeing conditions such as pH, dye concentration, microwave power, and dyeing time to determine the optimal conditions of a 100% cotton fabric dyeing process using a complementary dyeing method with microwave assistance. Optimal results were obtained with the following parameters: extraction ratio: 1:10, dyeing: pH 2–3, dyeing ratio: 1:30, dye concentration: 100%, microwave power at the level: high, dyeing time: 3 min and using 5% mordant CuSO4.5H2O. Washing fastness testing is a way of assessing the quality of dyed samples.
Nowadays, customers have an increased demand for casual clothes and clothes with additional functions such as anti-staining, anti-ultraviolet (UV), and flame-retardant without losing comfort when wearing them. Some rays from the sun, especially UV rays (i.e., UVA and UVB) are harmful to human health. At high intensity, UV rays can cause sunburn, increasing the possibility of getting cancer. UV radiation damages the skin and destroys skin cells. Fabrics that not only have the ability to block UV rays but also have anti-staining ability are being studied more and have high competitive advantages over fabric items when people pay more and more attention to beauty and health. Using nano TiO2 to complete UV protection is a suitable method due to its stability, non-toxicity, and wide application technology. Therefore, this research is performed to finish blocking UV, anti-staining treatment on 100% cotton fabric with nano TiO2 using the popular method in textile finishing of pad-dry-cure aim to attach bonding chemicals to the fabric under the influence of technological parameters as follows: concentration of nano TiO2, pick-up level, processing temperature, and processing time are different. From there, we can choose the most optimal treatment method for the bifunctional finishing cotton fabric to provide to the textile market.
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