The effect of alkali concentrations has been studied on the color strength （K/S） and color fastness properties of single jersey cotton knitted fabrics dyed with 1% Novacron Red S-B reactive dye. Same bath scouring a...The effect of alkali concentrations has been studied on the color strength （K/S） and color fastness properties of single jersey cotton knitted fabrics dyed with 1% Novacron Red S-B reactive dye. Same bath scouring and bleaching are performed and conventional exhaust dyeing method employed by IR laboratory sample dyeing machine. Various alkali concentrations such as 6, 7, 8, 9 and 10 g/L are employed and other parameters are kept fixed. The color strength （K/S） and color fastness to wash and rubbing are examined and evaluated. It is revealed that with the increase in alkali concentration from 6 g/L to 8 g/L the value of K/S increases and then up to 10 g/L the value decreases. The overall color fastness properties to washing and rubbing for the dyed samples range from good to excellent.展开更多
A laccase （Denilite IIS） was used to treat different cotton fabrics dyed with 0.2 g · L^-1 of vat dyes or reactive dyes. The results indicated that the laccase could remove the loosely adhering, unfixed or hydr...A laccase （Denilite IIS） was used to treat different cotton fabrics dyed with 0.2 g · L^-1 of vat dyes or reactive dyes. The results indicated that the laccase could remove the loosely adhering, unfixed or hydrolyzed dyes from the dyed fabric efficiently, which led to obvious improvements of color fastness. Furthermore, the wavelength of maximum absorbance of the residual solution of dyeing laccase-treated was different from that of the detergent-treated, which implied the laccase could accelerate structural changes of the adhering or hydrolyzed dyes from fabric in treating, resulting in obvious color changes of the residual solution. In addition, excessive laccase also could decolorize a few fixed reactive dyes from the dyed fabric, with a decrease of color strength and less further improvements of color fastness.展开更多
It has been analyzed the properties such as tensile strength, tearing resistance, crease angle recovery, pilling formation, drape co-efficient, colorfastness to rubbing and colorfastness wash by testing with the help ...It has been analyzed the properties such as tensile strength, tearing resistance, crease angle recovery, pilling formation, drape co-efficient, colorfastness to rubbing and colorfastness wash by testing with the help of related instrument, The twill woven fabrics which are chosen only different to their weave structure (2/1 S twill and 3/1 S twill) whether the other specification of the fabrics like warp count, weft count, ends per inch, picks per inch, GSM of the fabrics and the fiber quality were same. From the experiment, it was found that some properties such as tensile strength, drape co-efficient and colorfastness of 2/1 twill are better than 3/1 twill on the other hand few properties such as crease angle recovery, tearing resistance and colorfastness to wash of 3/1 twill is better than 2/1 twill. Afterward while performing the job for identifying the pill formation tendency, it was observed that pill formation tendencies of the both fabrics are same.展开更多
文摘The effect of alkali concentrations has been studied on the color strength （K/S） and color fastness properties of single jersey cotton knitted fabrics dyed with 1% Novacron Red S-B reactive dye. Same bath scouring and bleaching are performed and conventional exhaust dyeing method employed by IR laboratory sample dyeing machine. Various alkali concentrations such as 6, 7, 8, 9 and 10 g/L are employed and other parameters are kept fixed. The color strength （K/S） and color fastness to wash and rubbing are examined and evaluated. It is revealed that with the increase in alkali concentration from 6 g/L to 8 g/L the value of K/S increases and then up to 10 g/L the value decreases. The overall color fastness properties to washing and rubbing for the dyed samples range from good to excellent.
基金Supported by the National High Technology Research and Development Program of China ( No.2007AA02Z218)Open Project Program of Key Laboratory of Eco-Textiles,Jiangnan University,Ministry of Education(No.KLET0625)Youth Fund ofJiangnan University (No.2006LQN002)
文摘A laccase （Denilite IIS） was used to treat different cotton fabrics dyed with 0.2 g · L^-1 of vat dyes or reactive dyes. The results indicated that the laccase could remove the loosely adhering, unfixed or hydrolyzed dyes from the dyed fabric efficiently, which led to obvious improvements of color fastness. Furthermore, the wavelength of maximum absorbance of the residual solution of dyeing laccase-treated was different from that of the detergent-treated, which implied the laccase could accelerate structural changes of the adhering or hydrolyzed dyes from fabric in treating, resulting in obvious color changes of the residual solution. In addition, excessive laccase also could decolorize a few fixed reactive dyes from the dyed fabric, with a decrease of color strength and less further improvements of color fastness.
文摘It has been analyzed the properties such as tensile strength, tearing resistance, crease angle recovery, pilling formation, drape co-efficient, colorfastness to rubbing and colorfastness wash by testing with the help of related instrument, The twill woven fabrics which are chosen only different to their weave structure (2/1 S twill and 3/1 S twill) whether the other specification of the fabrics like warp count, weft count, ends per inch, picks per inch, GSM of the fabrics and the fiber quality were same. From the experiment, it was found that some properties such as tensile strength, drape co-efficient and colorfastness of 2/1 twill are better than 3/1 twill on the other hand few properties such as crease angle recovery, tearing resistance and colorfastness to wash of 3/1 twill is better than 2/1 twill. Afterward while performing the job for identifying the pill formation tendency, it was observed that pill formation tendencies of the both fabrics are same.
