Chromoxane cyanine R. I. Physical and chemical properties of the dye and of some of its iron complexes

Chromoxane cyanine R (Colour Index No. 43820, Mordant blue 3; also known as eriochrome cyanine R and solochrome cyanine R) is a valuable biological stain. The dyestuff is supplied as a powder containing a little less than 50% by weight of the monosodium salt of the dye, mixed with colourless crystalline and amorphous fillers. The tetrabasic colour acid was prepared and purified for study of the chemical and spectral properties of the dye. Chromoxane cyanine R is an acid-base indicator, with five different colours corresponding to the colour acid and the four anions. The most conspicuous colour change, from yellow to blue, occurs with ionization of the phenolic hydroxyl group at pH 11–12. The dye is assayed by measuring the absorbance of a strongly alkaline solution at 585 nm, with reference to a standard solution prepared from the purified colour acid. Spectrophotometric evidence has been found for the existence of three dye-metal complexes in solutions of the dye containing added ferric chloride at pH 1·5 (the pH of iron-dye solutions most useful in histological staining). These have the postulated compositions [Fe₂H(dye)]-(red), [FeH₂(dye)]- (red), and [Fe₂(dye)]^2- (blue). The first two are probably simple carboxylate complexes of low stability. Increase in pH or molar iron:dye ratio promotes formation of the more stable blue complex, which is a metal chelate. Other blue complexes have been described by other investigators in solutions less acid than those that are useful in microtechnique. The production of blue and various shades of red in tissues stained by solutions containing iron(III) and chromoxane cyanine R probably involves reactions of both the red and the blue complexes of the dye.     

紫甘薯红色素上染柞蚕丝织物的染色性分析

以紫甘薯红色素水溶液为染液,用直接染色方法和稀土媒染方法对柞蚕丝织物染色,以明度、饱和度、色差和上染率为检测指标,研究了上染工艺和染色效果。通过正交试验和单因素分析确定了直接染色最佳工艺条件:染液质量浓度5g/L,染液pH=4,染色温度80℃,染色时间60min,浴比1∶40;预媒染的最佳工艺条件是稀土2.5g/L,媒处理温度70℃,时间45min。结果表明,染色后的织物色泽鲜亮,经预媒染织物明度和色差有所降低,皂洗牢度和摩擦牢度较直接染色织物提高1～2级。     

黄土媒染黄檗染料的棉织物生态染色工艺研究

选用黄色系天然染料——黄檗对纯棉织物进行了染色,并利用天然黄土粉作为媒染剂进行了媒染处理。通过实验确定了黄檗染纯棉织物的最佳工艺条件为染液质量浓度10g／L,温度60℃,染色时间40min。结果表明,由黄土媒染处理的黄檗染色织物色牢度可提高2～3级。染色后织物完全达到生态检测标准。     

落叶松栲胶媒染兔毛皮的研究

以硫酸亚铁作为媒染剂探究落叶松栲胶对兔毛皮染色的影响,实验结果表明,经过预处理后媒染,兔毛皮拥有更好的染色性能。通过正交实验得到最优预处理工艺为:双氧水40 mL/L、甲酸60 mL/L、温度55℃、时间60 min。通过单因素实验得到媒染法的最优工艺为:硫酸亚铁浓度45 g/L、媒染温度55℃、媒染时间75 min、媒染pH值4.0。     

Dyeing of Chicken Feather Fibers with Natural Dyes

ABSTRACT

In this study, coloration of the feather fibers with natural dye sources was examined. By this way it was planned to introduce colored chicken feather fibers to serve for different textile applications. For the coloration of the feather fibers, the natural dye sources “Buckthorn,” “Madder,” and “Hibiscus” were used. During the dyeing process, different mordanting agents were added to the dye bath to see the effect of the mordanting agents and also dyeing of the feather fibers without use of any mordanting agent was investigated. Afterwards samples were evaluated in terms of color efficiencies and color values. Moreover, the washing and light fastnesses of the samples were tested. As a result, it was observed that the tested natural dye sources can be used for the coloration of the chicken feather fibers and different colors can be easily obtained with the use of these natural dye sources and mordants.     

阳离子改性粘胶织物的亮蓝色素染色

粘胶织物先进行阳离子改性前处理,再采用人工合成的食用色素亮蓝对其进行染色,探究直接染色及三种媒染方法和媒染剂种类对粘胶织物染色性能的影响。结果表明,亮蓝色素以硫酸铝为媒染剂采用同浴媒染时染色效果较好。优化的工艺为:媒染时间30 min,媒染温度90℃,硫酸铝质量分数7.0%(omf),染液pH值4.0。阳离子改性可以增加织物的染色深度,提高织物的耐摩擦色牢度和耐皂洗色牢度。     

桉树皮提取液对真丝织物染色性能的研究

采用水溶液提取桉树皮色素,利用气相质谱-色谱联用仪(GC-MS)分析水抽提物中的有效成分,并将其用于真丝织物的染色;探究了染色方法、媒染剂种类、媒染剂质量分数、染色温度及染色时间对真丝织物染色性能的影响。结果表明:使用明矾、硫酸铝、硫酸锌、硫酸铜作为媒染剂时,最佳的染色方法是同浴媒染法,优化染色工艺为浴比1︰50,硫酸铜质量分数5%,染色温度95℃,染色时间50 min。媒染剂对真丝织物的颜色特征值有影响,且媒染能提高其各项色牢度等级,尤其是耐光色牢度。     

大豆蛋白纤维的姜黄色素染色

采用氢氧化钠从姜黄中提取姜黄色素,讨论提取温度、时间、姜黄浓度及碱剂用量对提取效果的影响;将提取的姜黄天然染料对大豆纤维进行染色,讨论染色方法、染色温度、时间及盐用量对染色效果的影响,并优化了染色工艺。优化的姜黄色素提取工艺为:姜黄80 g/L,NaOH 30 g/L,90℃提取75 m in;优化的大豆纤维姜黄色素染色工艺为:采用同浴媒染法,染液选择未稀释姜黄提取原液,Zn2+媒染剂0.08 mol/L,媒染温度100℃,染色时间60 m in。大豆蛋白织物染色后,干摩擦牢度良好,湿摩擦牢度稍差,具有一定的抗菌性能。     

改性棉织物的五倍子植物染料染色

以羟丙基三甲基氯化铵壳聚糖(HACC)为改性剂对棉织物进行改性,研究了五倍子植物染料对改性棉织物的染色性能,探讨了染色温度、染液浓度、染色时间、染色方法、媒染剂种类、媒染剂浓度等因素对染改性棉织物染色性能的影响.结果表明:五倍子植物染料上染改性棉织物的最佳方法是后媒染色法,染色温度60℃、染色时间30 min、染液质量...     

茜草色素在真丝织物上染色性能的研究

针对茜草色素染色真丝织物的颜色特征受工艺条件影响较大的特点,通过测定染色织物的颜色特征值,分析媒染剂种类、媒染方式、pH值、染色温度、染色时间等因素对染色真丝织物性能的影响。试验结果表明,改变媒染剂种类及媒染方式,可以得到黄色、红色、紫色等多种颜色。以硫酸铝和硫酸亚铁为媒染剂,改变染色pH值能得到不同颜色,且K/S值随着pH值增大而下降;染色温度不改变染色织物的色相,K/S值随着温度升高而升高;染色时间对染色织物的色相和K/S值影响不大;最佳工艺条件下,染色真丝织物具有较好的色牢度,日晒色牢度4~5级,耐皂洗色牢度3~4级,耐汗渍色牢度3级以上。