The Experts below are selected from a list of 345 Experts worldwide ranked by ideXlab platform
Shahid Adeel - One of the best experts on this subject based on the ideXlab platform.
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dyeing of biotreated and gamma irradiated cotton fabric using direct yellow 12 and direct yellow 27
Journal of Natural Fibers, 2016Co-Authors: Muhammad Usman, Shahid Adeel, Waqar Haider, Abdul Ghaffar, Fazalur Rehman, Majid AliAbstract:ABSTRACTThe present study is concerned with dyeing of gamma irradiated and biotreated cotton fabric using direct dyes. Dyeing was performed after exposing fabric to gamma rays at 18 and 14 kGy for Direct Yellow 12 and Direct Yellow 27, respectively, using Cs-137 irradiator. It was found that dyeing of biopolished cotton after gamma rays treatment gives good color strength at 50 °C for 70 min keeping M:L of 1:40 in the presence of 4 g/L of salt using Direct Yellow 12. While for Direct Yellow 27, better results were obtained at 50 °C for 50 min keeping M:L of 1:40 in the presence of 2 g/L salt. The biotreatment of fabric before gamma rays irradiation has reduced dyeing time and amount of salt used which shows that it is the time effective tool for direct dyeing of cotton. The improvement in colorfastness properties show that biotreatment before gamma ray treatment is an effective method for modifying textile processing.
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Dyeing of gamma irradiated cotton using Direct Yellow 12 and Direct Yellow 27: improvement in colour strength and fastness properties
Cellulose, 2015Co-Authors: Shahid Adeel, Muhammad Usman, Waqar Haider, Muhammad Saeed, Majid MuneerAbstract:Present study is concerned with the dyeing behavior of gamma irradiated cotton using direct dyes. The fabric and dye powder was exposed to absorbed doses of Cs-137 gamma irradiator between 14 and 26 kGy. It was found that 18 kGy is the optimal absorbed dose for tuning the surface of fabric to get colour strength using Direct Yellow 12, whereas good colour strength was obtained by dyeing irradiated fabric at 70 °C for 70 min by keeping M:L of 1:30 using dyeing bath of pH 10 in the presence of 2 g/L of table salt. While 14 kGy is the most effective absorbed dose for Direct Yellow 27 where good colour strength was obtained at 80 ^°C for 60 min keeping M:L of 1:70 in presence of 10 g/L of salt using neutral dyeing bath. At these conditions not only leveled dyeing was achieved but the Colourfastness was also improved.
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dyeing behaviour of gamma irradiated cotton fabric using lawson dye extracted from henna leaves lawsonia inermis
Radiation Physics and Chemistry, 2012Co-Authors: Fazalu Rehma, Shahid Adeel, Summia Qaise, Ijaz Ahmad Hatti, Muhammad Shahid, Mohammad ZubeAbstract:Abstract Dyeing behavior of gamma irradiated cotton fabric using Lawson dye extracted from henna leaves has been investigated. Cotton and dye powder are irradiated to different absorbed doses of 2, 4, 6, 8 and 10 kGy using Cs-137 gamma irradiator. The dyeing parameters such as dyeing time, electrolyte (salt) concentration and mordant concentrations using copper and iron as mordants are optimized. Dyeing is performed using un-irradiated and irradiated cotton with dye solutions and their color strength values are evaluated in CIE Lab system using Spectraflash –SF650. Methods suggested by International Standard Organization (ISO) have been employed to investigate the Colourfastness properties such as Colourfastness to light, washing and rubbing of irradiated dyed fabric. It is found that gamma ray treatment of cotton dyed with extracts of henna leaves has significantly improved the color strength as well as enhanced the rating of fastness properties.
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effect of mercerization and gamma irradiation on the dyeing behaviour of cotton using stilbene based direct dye
Radiation Physics and Chemistry, 2012Co-Authors: Ijaz Ahmad Bhatti, Shahid Adeel, Misbah Irshad, Muhammad AbbasAbstract:Abstract The dyeing behaviour of mercerized and gamma irradiated cotton fabric using stilbene based direct dye has been investigated. The fabric was treated with different concentrations of alkali to optimize the mercerization. The optimum mercerized cotton fabric was irradiated to absorbed doses of 2, 4, 6, 8 and 10 kGy using Cs-137 gamma irradiator. Dyeing was performed using irradiated and un-irradiated cotton with dye solutions. The dyeing parameters such as temperature, time of dyeing, pH of dyeing solutions and salt concentration were optimized. The colour strength values of dyed fabrics were evaluated by comparing irradiated and un-irradiated cotton in CIE Lab system using Spectra flash SF650. Methods suggested by International Standard Organization (ISO) were employed to study the effect of gamma irradiation on the Colourfastness properties of dyed fabric. It was found that mercerized and irradiated cotton have not only improved the colour strength but enhanced the rating of fastness properties also.
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improvement of colour strength and Colourfastness properties of gamma irradiated cotton using reactive black 5
Radiation Physics and Chemistry, 2012Co-Authors: Ijaz Ahmad Bhatti, Shahid Adeel, Raziya Nadeem, Toheed AsgharAbstract:Abstract The dyeing behaviour of gamma irradiated cotton fabric using Reactive Black-5 dye powder has been investigated. The mercerized, bleached and plain weaved cotton fabric was irradiated to different absorbed doses of 100, 200, 300, 400, 500 and 600 Gy using Co-60 gamma irradiator. Dyeing was performed using irradiated and un-irradiated cotton with dye solutions. The dyeing parameters such as temperature of dyeing, time of dyeing and pH of dyeing solutions were optimised. The colour strength values of dyed fabrics were evaluated by comparing irradiated and un-irradiated cotton in CIE Lab system using Spectra flash SF650. Methods suggested by International Standard Organisation (ISO) were employed to study the effect of gamma irradiation on the Colourfastness properties of dyed fabric. It is found that gamma irradiated cotton dyed with Reactive Black-5 has not only improved the colour strength but also enhanced the rating of fastness properties.
Majid Muneer - One of the best experts on this subject based on the ideXlab platform.
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Dyeing of gamma irradiated cotton using Direct Yellow 12 and Direct Yellow 27: improvement in colour strength and fastness properties
Cellulose, 2015Co-Authors: Shahid Adeel, Muhammad Usman, Waqar Haider, Muhammad Saeed, Majid MuneerAbstract:Present study is concerned with the dyeing behavior of gamma irradiated cotton using direct dyes. The fabric and dye powder was exposed to absorbed doses of Cs-137 gamma irradiator between 14 and 26 kGy. It was found that 18 kGy is the optimal absorbed dose for tuning the surface of fabric to get colour strength using Direct Yellow 12, whereas good colour strength was obtained by dyeing irradiated fabric at 70 °C for 70 min by keeping M:L of 1:30 using dyeing bath of pH 10 in the presence of 2 g/L of table salt. While 14 kGy is the most effective absorbed dose for Direct Yellow 27 where good colour strength was obtained at 80 ^°C for 60 min keeping M:L of 1:70 in presence of 10 g/L of salt using neutral dyeing bath. At these conditions not only leveled dyeing was achieved but the Colourfastness was also improved.
Younsook Shin - One of the best experts on this subject based on the ideXlab platform.
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utilization of metasequoia metasequoia glyptostroboides cone as a new natural dye resource 2 dyeing properties and antimicrobial functionality of silk fiber
Textile Coloration and Finishing, 2015Co-Authors: Jun Yan, Dong Il Yoo, Younsook ShinAbstract:The aim of this study was to investigate the possibility utilizing Metasequoia(Metasequoia glyptostroboides) cone as a new natural dye resource. In previous study, dyeing onto cotton fiber was carried out and Metasequoia cone colorant showed low affinity to cotton fiber and maximum dye uptake was obtained at pH 3.5 showing YR Munsell color. For further evaluation of its efficacy as a new natural dye resource, effects of dyeing conditions and mordanting on dye uptake, color change, and colorfastness were investigated for silk fiber. Metasequoia cone colorant showed good affinity toward silk fiber showing YR Munsell color and maximum dye uptake was shown at pH 3.5. Post-mordanting with Cu and Fe improved dye uptake, especially Fe() mordant was effective as much as 2 times higher dye uptake comparing with un-mordanted sample. The color of dyed fabrics with mordanting showed YR Munsell color. Fe mordanted fabrics appeared dark gray~black color. Colorfastness to washing was relatively good, whereas lightfastness of the dyed fabrics showed grade 2. It was confirmed that Metasequoia cone colorant can be used as a new dye resource for silk fiber getting brownish yellow to dark gray/black color depending on mordant type. In addition, it showed antimicrobial functionality.
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utilization of metasequoia metasequoia glyptostroboides cone as a new natural dye resource 1 dyeing of cotton fiber
Textile Coloration and Finishing, 2015Co-Authors: Yan Jun, Dong Il Yoo, Younsook ShinAbstract:Abstract : The aim of this study was to investigate the possibility utilizing Metasequoia( Metasequoia glyptostroboides ) cone as a new natural dye resource. Dyeing onto cotton fiber was carried out to study the effect of dyeing conditions and mordanting effect on dye uptake, color change, and colorfastness. FT-IR analysis supported that hydrolyzable tannins were contained in the extracted colorant. Metasequoia cone colorant showed low affinity to cotton fiber and maximum dye uptake was obtained at pH 3.5 showing YR Munsell color. Mordanting improved dye uptake regardless of mordant type, especially Fe(C 5 H 10 FeO 6 ) mordant was effective as much as 2 times higher dye uptake comparing with un-mordanted sample. The color of dyed fabric with mordanting showed YR Munsell color except of the Fe(FeSO 4 ·7H 2 O) mordanted sample showing Y Munsell color. Colorfastness to rubbing and washing was relatively good, whereas lightfastness of the dyed fabrics was above grade 3/4 except that the dyed samples with Fe mordanting showed grade 2. It is necessary to apply Metasequoia cone colorant onto other fibers, especially protein fibers, for evaluating its efficacy as a new natural dye resource.
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use of chitosan to improve dyeability of dp finished cotton ii
Journal of Applied Polymer Science, 1998Co-Authors: Younsook Shin, Dong Il YooAbstract:Chitosan was used to improve the dyeability of DP-finished cotton. Cotton fabric was treated with a mixture of chitosan, 4,5-dihydroxy-1,3-dimethyl-2-imidazolidinone (DHDMI), and catalyst in a one-step process. To investigate the effect of molecular weight of chitosan on the dyeability of treated fabrics, six chitosan samples of different molecular weights were prepared by depolymerization with sodium nitrite; 185,300, 73,200, 59,000, 21,000, 14,000, and 3,800, respectively. Chitosan improves dye uptake of direct and acid dyes considerably, and the dye uptake increases with the increase of the molecular weight of chitosan. Reactive dye uptake increases slightly in alkaline condition as the molecular weight of chitosan decreases. Higher dye uptake is obtained in acidic condition than in alkaline condition. Chitosan treatment has no discernable effect on the colorfastness to washing, but decreases the colorfastness to wet crocking by about half a point. And chitosan affects other properties of treated fabric; lower wrinkle recovery, stiffer handle, and higher breaking strength as the molecular weight of chitosan increases. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 67:1515–1521, 1998
Sunita Dixit - One of the best experts on this subject based on the ideXlab platform.
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EFFECT OF CELLULASE ENZYMES AND SWELLING AGENTS ON COLOUR STRENGTH (K/S) AND Colourfastness PROPERTY OF HANDLOOM COTTON FABRIC DYED WITH BUTEA FRONDOSA DYE
2017Co-Authors: Sunita DixitAbstract:Cellulase and swelling agents are known to be effective in improving the colour strength of cotton. Nowadays, the handloom fabrics are much preferred due to development of innovative designs and their comfort in wearing Due to increased environmental awareness the use of natural dyes are much preferred in dyeing of handloom fabrics. But, khadi cotton has some major shortcomings like less dyeability. Keeping in view that the pretreatment of khadi cotton with cellulases, swelling agents and combination of cellulases and swelling agents before dyeing improves the colour strength properties, the present study was planned. The khadi cotton samples were treated with optimized conditions of enzymes and swelling agents. The optimum pH, concentration, treatment time and temperature selected for the acid cellulase enzyme treatment were 5.5, 1.5% (owf), 45 minutes and 50°C, respectively whereas in case of neutral cellulase enzyme, it was 7.5, 2.0% (owf), 70 minutes and 70°C respectively. The optimum concentration, treatment time and temperature selected for sodium hydroxide treatment were 20% w/v, 60 minutes and 60°C, respectively. In case of ethylenediamine, 80% w/v, 60 minutes and 70°C were selected as optimum concentration, treatment time and temperature, respectively. In case of zinc chloride treatment, the optimum concentration, treatment time and temperature were selected as 80% w/v, 60 minutes and 70°C. 5 g Butea frondosa dye extracted for 75 minutes gave best results on khadi cotton when dyeing was carried out for 90 minutes It was observed that out of various concentrations of mordants used with Butea frondosa dye, best shades of colour were obtained by using 0.04 g of Alum, 0.01 g of Copper sulphate, 5 g each of Babool bark.On optimizing the method of mordanting, best results were obtained with Butea frondosa dye when samples were simultaneous mordanted and dyed with Alum, Babool bark and Alum. Pre-mordanting was selected for Copper sulphate. . It was found that for all the enzyme treated (acid and neutral cellulase) as well as swelling agents treated (Sodium hydroxide, Ethylenediamine and Zinc chloride) samples, the colour strength and Colourfastness was increased in comparison to the untreated samples
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Effect of Cellulase Enzymes and Swelling Agents on Colour Strength and Colourfastness of Handloom Cotton Fabric Dyed with Butea Frondosa
Research Journal of Textile and Apparel, 2015Co-Authors: Sunita DixitAbstract:Cellulases and swelling agents are known to be effective in improving the colour strength of cotton. Nowadays, handloom fabrics, such as khadi cotton, are much more preferred due to the development of innovative designs with their use and their comfort in wearing. Also, due to increased environmental awareness, the use of natural dyes are much more preferred in the dyeing of handloom fabrics. However, khadi cotton has some major shortcomings, such as less dyeability. The present study is carried out by keeping in mind that the pretreatment of khadi cotton with cellulases, swelling agents and a combination of cellulases and swelling agents before dyeing improves the colour strength properties. Khadi cotton samples are treated with optimized conditions of the enzymes and swelling agents. The optimum pH, concentration, treatment time and temperature selected for treatment of the samples with acid cellulase enzymes are 5.5, 1.5% (owf), 45 minutes and 50°C, respectively, whereas in the case of neutral cellulase enzymes, 7.5, 2.0% (owf), 70 minutes and 70°C, respectively. The optimum concentration, treatment time and temperature selected for the treatment of the samples with sodium hydroxide, ethylenediamine and zinc chloride are 20% w/v, 60 minutes and 60°C; 80% w/v, 60 minutes and 70°C, and 80% w/v, 60 minutes and 70°C respectively. Butea frondosa dye (5 g) extracted for 75 minutes provides the best results on khadi cotton when dyeing is carried out for 90 minutes. It is observed that out of the various concentrations of mordants used with the Butea frondosa dye, the best shades of colour are obtained by using 0.04 g of alum, 0.01 g of copper sulphate, and 5 g of Babool bark. In terms of optimizing the mordanting, the best results are obtained with Butea frondosa dye when the samples are simultaneously mordanted and dyed with alum, Babool bark and alum. Pre-mordanting is selected for the copper sulphate. It is found that for all the enzyme treated (acid and neutral cellulase) as well as swelling agent treated (sodium hydroxide, ethylenediamine and zinc chloride) samples, the colour strength and Colourfastness increase in comparison to the untreated samples.
Liu Y - One of the best experts on this subject based on the ideXlab platform.
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The effect of laser engraving on aluminum foil-laminated Denim fabric
SAGE Publications, 2015Co-Authors: Sx Jiang, Yuan G, Huang J, Peng Q, Liu YAbstract:In this paper, a developed textile design method combining laser engraving and foil lamination was explored. With the foil laminating, the surface of denim fabric shows shinning effect. After that, the foil-laminated denim samples were treated with laser engraving by adjusting the parameters, including resolution (dots per inch, dpi) at 20, 30, 40 and 50 dpi and the pixel time (microsecond, μs) at 120 and 180 μs to melt and evaporate the aluminum foil and some surface fibers. The properties of the laser-engraved foil-laminated denim fabric, including weight, tearing strength, air resistance, surface observation, color appearance, colorfastness and abrasion resistance, and some low-stress mechanical properties, were investigated. The experimental results revealed that the changes in these properties are mainly related to the melted and evaporated surface laminated aluminum foil and different sizes of cracks, wrinkles and pores formed on the fiber surface with the increment of laser energy applied. This study also revealed the potential of pattern creation with different values and reflective appearance for the embellishment of denim fabric combining the aluminum foil laminating method through the laser engraving process. With lower resolutions, engraved vague patterns with small laser beam dots can be achieved. While the treatment resolution increased, clear patterns could be performed. Based on the same resolution, the higher pixel time can export more energy, which makes the pattern look more clearly. This design approach opens up new possibilities for metallic denim fabric design without any chemicals used.Institute of Textiles and ClothingDepartment of Computin