The Experts below are selected from a list of 36 Experts worldwide ranked by ideXlab platform
Mouchuan Hwang - One of the best experts on this subject based on the ideXlab platform.
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interactions between new multi anionic surfactants and Direct dyes and their effects on the Dyeing of cotton fabrics
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2010Co-Authors: Kengming Chen, Lihuei Lin, Chien Fu Wang, Mouchuan HwangAbstract:Abstract A series of novel surfactants containing multi-anionic and nonionic hydrophilic moieties have been prepared by reacting fumaric acid with polyoxyethylenated stearyl ether in the presence of a peroxy-type free radical initiator to form addition products featuring a carboxylic acid groups. The critical micelle concentration (CMC) decreased upon increasing the length of the polyoxyethylene chain of the surfactant. The surface excess concentration at the surface and the occupied area per surfactant molecule were calculated. We used spectrophotometric methods to study the interactions between the dyes and the polycarboxylated multi-anionic surfactants. The rate of Direct Dyeing of cotton was influenced by the degree of aggregation of the dye in the dye bath. Indeed, disaggregation of Direct dyes in the presence of the surfactants increased the rate of dye uptake by the cotton fibers. On the other hand, the formation of dye–surfactant complexes retarded the rate of dye uptake on the cotton fabrics.
Majid Ali - 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.
Kengming Chen - One of the best experts on this subject based on the ideXlab platform.
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interactions between new multi anionic surfactants and Direct dyes and their effects on the Dyeing of cotton fabrics
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2010Co-Authors: Kengming Chen, Lihuei Lin, Chien Fu Wang, Mouchuan HwangAbstract:Abstract A series of novel surfactants containing multi-anionic and nonionic hydrophilic moieties have been prepared by reacting fumaric acid with polyoxyethylenated stearyl ether in the presence of a peroxy-type free radical initiator to form addition products featuring a carboxylic acid groups. The critical micelle concentration (CMC) decreased upon increasing the length of the polyoxyethylene chain of the surfactant. The surface excess concentration at the surface and the occupied area per surfactant molecule were calculated. We used spectrophotometric methods to study the interactions between the dyes and the polycarboxylated multi-anionic surfactants. The rate of Direct Dyeing of cotton was influenced by the degree of aggregation of the dye in the dye bath. Indeed, disaggregation of Direct dyes in the presence of the surfactants increased the rate of dye uptake by the cotton fibers. On the other hand, the formation of dye–surfactant complexes retarded the rate of dye uptake on the cotton fabrics.
Chaoxia Wang - One of the best experts on this subject based on the ideXlab platform.
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optimization of natural dye extracted from phytolaccaceae berries and its mordant Dyeing properties on natural silk fabric
Journal of Natural Fibers, 2018Co-Authors: Chaoxia WangAbstract:ABSTRACTA moderate approach was used to extract natural dye from wild Phytolaccaceae berries, and the stability and Dyeing properties on the silk fabric of the exacted Phytolaccaceae natural dye was investigated. Via stability analysis, the natural dye had excellent stability during heating, pH or adding Metal ions. When the Dyeing temperature was 30oC, the K/S value of the dyed silk fabric was 6.3, and with SnCl2 mordant, the K/S value was increased 14.3%. The rubbing and washing fastness via metal mordant were increased by 0.5–1.5 grade compared to the fastness of fabric treated with Direct Dyeing method.
Muhammad Usman - 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.