固色和铁媒染对苏木染色丝织物颜色稳定性的影响

通过测试染色织物的颜色指标值（L﹡、a﹡、b﹡、c﹡值及K/S值）和色牢度,探讨了苏木天然染料媒染染色柞蚕丝织物及经固色处理的丝织物的颜色稳定性。研究结果表明,媒染和固色均会影响染色织物的颜色和颜色稳定性;固色可增加染色织物在不同pH值水溶液的颜色稳定性;铁媒染染色可以明显提高织物的耐洗色牢度,但不能增强织物的色光稳定性;铁媒染和固色对苏木染色丝织物颜色的光稳定性和氧漂稳定性均有改善;在高温条件下,铁媒染和固色不能增加苏木染色蚕丝织物的颜色稳定性,但固色可使染色织物更加艳丽。     

桑椹天然染料的稳定性及其对丝织物媒染染色

针对桑椹染料对丝织物染色亲和力低、色牢度差的问题,为最大程度表现桑椹染料颜色特点,选择合理的桑椹染料染色工艺参数、媒染工艺对丝织物进行染色.通过测试桑椹染液的可见吸收光谱、染色织物色度(K/S值)及染色牢度来探讨桑椹天然染料的颜色稳定性及其对丝织物的媒染效果.研究结果显示:桑椹染液在pH值为4以下、温度为80℃以下表现...     

葡萄皮天然染料在鲜茧丝织物染色中的应用

为开发高档鲜茧丝织物染色产品,研究了葡萄皮天然染料在鲜茧丝织物染色中的应用。首先分析染料稳定性,然后从染色方法、温度、染浴pH值等方面优化染色工艺,探讨了媒染剂种类对颜色特征值的影响,最后测试色牢度及抗紫外性能。结果表明:葡萄皮天然染料热稳定性良好,酸性条件下稳定,碱性条件下颜色变深。适宜的染色方法为后媒染法,最优染色工艺:染浴pH值8,元明粉10 g/L,90℃保温60 min;后媒染工艺:硫酸亚铁5%,柠檬酸1 g/L,60℃保温30 min。媒染剂可丰富染色鲜茧丝织物色谱;染色鲜茧丝织物耐皂洗、耐摩擦色牢度可达3级以上,抗紫外性能良好。     

Wool and silk dyeing with the stem and leaves extract of anise北大核心

Extracted from the stems and leaves of anise can be used as natural dyes in fabric dyeing and can obtained good results. In this paper, pre-mordant staining, first with 2% (owf), of the metal mordant alum, copper sulfate, ferrous sulfate, potassium dichromate, stannous chloride and tin chloride on wool and silk fabrics were processed, then used 5% (owf) of the extract of stems and leaf stained and evaluate dyed fabrics with K/S value, dyeing rate and color fastness. Experimental results showed that the K/S values of wool fabric was higher than the silk, and the natural dye was more suitable for wool fabric dyeing.     

樟树叶天然染料对蚕丝织物的染色性能

研究了从樟树叶中提取的天然染料对蚕丝织物的染色性能。比较直接染色与媒染染色,选择硫酸亚铁、硫酸锌、明矾作为媒染剂,分析染色蚕丝织物的K/S值、L*值、C*值,直接染色的优化工艺为:染液5%(omf)、温度90℃、时间60 min、pH=4、浴比1∶25,最高K/S值为7.874。媒染染色明显提高了上染率,硫酸亚铁同浴媒染使K/S值最高升至22.512。采用媒染法染色后织物的耐皂洗色牢度、耐摩擦色牢度和耐日晒色牢度均有明显提高。     

红藤天然染料提取及上染真丝纱线研究

为丰富天然染料的品种,从红藤植物中提取天然染料并研究其对真丝纱线的染色性能。优化天然染料的提取工艺,采用氯化稀土媒染剂对真丝纱线进行媒染处理,研究染色纱线的各项色牢度及防紫外线性能。研究结果表明,红藤提取液对真丝纱线的最佳染色工艺为:染色温度90℃,p H为4.5,染色60 min,后媒染染色。染色后真丝纱线具有较好的耐洗色牢度,且具有良好的防紫外线能力,具有广阔的应用前景。     

UV protection properties of silk fabric dyed with eucalyptus leaf extract

A natural dye extracted from eucalyptus leaves was applied to a silk fabric using two padding techniques, namely the pad‐batch and pad‐dry techniques, under different conditions. It was observed that with an increase in the dye concentration, the ultraviolet (UV) protection factor (UPF) values ranged between good and excellent for the silk fabric. In addition, a darker colour, such as that provided by a FeSO₄ mordant, gave better protection because of higher UV absorption. A silk fabric dyed in a solution containing the eucalyptus leaf extract showed a shade of pale yellowish‐brown. The exception was when the fabric was dyed with the FeSO₄ mordant, resulting in a shade of dark greyish‐brown. The colour fastness to washing and rubbing of the silk fabrics treated with the mordant after dyeing was investigated and the results showed good fastness, whereas colour fastness to light was at a fair level. The results confirmed that natural dyes from eucalyptus leaf extract with metal mordants have potential applications in fabric dyeing and in producing UV‐protective silk fabrics.     

荞麦壳色素的提取及对羊毛织物的染色性能

采用天然染料荞麦壳提取液对羊毛织物进行染色,通过响应面法得到优化的荞麦壳色素提取工艺:粉碎目数100目、提取温度100℃、提取时间144 min,色素的产率为4.36%。通过正交试验得到直接染色的优化工艺条件:染色pH值5、染色温度100℃、染色时间80 min。选择三种媒染方法和三种媒染剂分别对羊毛织物进行染色,测试染后织物K/S值、防紫外线性能及色牢度。结果表明,以硫酸铝钾作为媒染剂的后媒染工艺染得织物的K/S值较大,媒染剂的使用提高了织物的耐摩擦色牢度,降低了UVA、UVB的透过率。     

火炬树果穗染料对4种纤维的染色性能

以火炬树果穗为原料提取天然染料,对稳定性及其在4种纤维上的染色性能进行了研究。测试纤维直接染色及媒染染色的颜色特征值和染色牢度,探讨了媒染剂对染色效果的影响。结果表明:火炬树果穗染料在酸性条件下比较稳定,有较强的耐热性,对4种纤维均具有良好的染色性能,纤维可获得多种颜色。直接染色和媒染染色纤维的K/S值从大到小均为羊毛、柞蚕丝、牛奶蛋白、大豆蛋白,媒染剂对染色纤维K/S值的影响从大到小为Fe^2+、稀土、Al^3+、Cu^2+。媒染提高了纤维的颜色深度和色牢度,染色纤维各项色牢度均较好。     

纯棉织物的红刺梨天然染料染色

将红刺梨汁提取物作为天然染料用于纯棉织物染色,研究染色、媒染工艺对染色织物表观颜色深度(K/S值)、染色牢度、染色均匀性的影响。结果表明,采用后媒染工艺,以单宁酸为媒染剂,在90℃、pH值8、氯化钠30 g/L和媒染剂4 g/L条件下,染色织物的K/S值、匀染性、染色牢度和断裂强力等指标均比较满意。     

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。     

天然染料高粱红对柞丝织物的染色性能研究

从高粱中提取高粱红天然染料,对柞丝织物进行直接染色、预媒法染色、后媒法媒染染色,通过正交试验及单因素试验确定了最佳染色条件,并对染色织物进行了相应的牢度测试,结果表明,经铁媒染后柞丝织物的各项牢度指标均较理想。     

天然茶叶染料的提取及在真丝织物上的应用

采用提取的天然茶叶染料对真丝绸织物的染色性能进行研究,通过正交试验及单因素分析,探讨了染色温度、pH值、保温时间及不同媒染剂的影响,得出茶叶染真丝织物最佳工艺条件,并对染色的各项牢度指标作了比较。结果表明,在浴比1∶20、沸煮、弱酸（pH=4～5）条件下,采用铜离子后媒法染色60min得到的真丝织物具有良好的得色量和染...     

天然染料高粱红对柞丝绸的媒染性能研究

分别以金属盐和有机酸为媒染剂,研究了天然染料高粱红对柞丝绸的预媒、后媒法染色性能。结果表明,金属媒染剂和有机酸媒染剂对高粱红染料的染色性能均有所提高,其中金属媒染剂的效果较好,且后媒法好于预媒法。两种媒染剂对其牢度都有所提高。     

Eco-Friendly Dyeing of Silk and Cotton Textiles Using Combination of Three Natural Colorants

Silk and cotton fabrics were dyed with combination of three colorants extracted from Acacia catechu (AC), Alkanna tinctoria (AT), and Curcuma Longa (CL) in nine different formulations at 80°C by exhaustion method without mordanting. Dyed samples were evaluated for color value and washing fastness. The biodegradability of dye bath effluent was assessed by measuring the pH, TDS and COD of the residual dye bath liquor. It is inferred that the final color of dyed fabrics from each formulation is governed by the dominant natural dye in the dyeing combination. K/S values inferred that the exhaustion of natural dye is higher in silk fabric than cotton fabric in all formulations. It could be concluded that in the dyeing combination, colorant that have very good affinity towards the functional groups of fibers, itself acts as mordant for other natural colorants.     

真丝绸紫胶天然染料微波染色探讨

分析了pH值、温度对紫胶天然染料稳定性的影响,研究了真丝绸的紫胶天然染料微波染色工艺,并与常规染色工艺进行了比较。结果表明,真丝绸微波染色或微波媒染染色的K/S值及色牢度与常规真丝绸染色的K/S值及色牢度接近,而微波加热可以大大缩短染色时间,节能效果明显。     

壳聚糖在锦纶织物染色中的应用研究

根据壳聚糖在阴离子染料染色时,可起到使颜色增深的作用特性,先用一定浓度的壳聚糖溶液对锦纶织物进行预处理,然后再用弱酸性染料进行染色,以提高其湿处理牢度。试验结果表明:锦纶织物用弱酸性染料染色时,染浴pH值对染色性能影响显著;经壳聚糖处理以后的锦纶织物,用弱酸性染料进行染色,其染色深度K/S值较未经壳聚糖处理的织物提高90 %左右,即K/S值由1. 946增加到3. 706;染色织物的干、湿摩擦牢度均达到5级;皂洗牢度原样褪色达4~5级,白布沾色达到4级。     

Dyeing of Cationized Cotton with Natural Colorant from Purple Corncob

In this investigation, dyeing of cotton fabric with natural dye extracted from purple corncob was attempted by means of pretreatment with a cationic agent, 3-chloro-2-hydroxypropyltrimenthylammonium chloride (CHTAC). Maximum color yield results were achieved when the fabric was pretreated with CHTAC at a concentration of 125 g/L, followed by dyeing at 100°C for 30 min in a dye bath adjusted to pH 9. The influence of meta- and post-mordanting with AlK(SO₄)₂, CuSO₄, FeSO₄, and gallnut was subsequently explored. Compared with the unmordanted sample, post-mordanting enhanced K/S values and slightly improved light fastness, but both meta- and post-mordanting caused a reduction in wash fastness from an excellent to a fair level, with the exception of CuSO₄. Meanwhile, mordanting with gallnut increased the acid and alkaline perspiration fastness from a poor and fair to a good level.     

蚕丝的红曲红素生态媒染染色

为了拓展红曲红素的应用领域,本文将红曲红素应用于蚕丝织物染色,分别探讨了pH值、媒染剂用量、媒染方式对上染百分率和K/S值的影响,并研究了染色后织物的皂洗牢度和耐光牢度。研究结果表明：稀土氯化镨具有较强的配位络合作用,能与红曲红素分子和纤维形成络合结构,从而显著提高上染百分率和K/S值,染色后织物的皂洗牢度达到4级,耐光牢度可达到3~4级。优化染色工艺配方为：采用氯化镨同浴法媒染,媒染剂用量为1g/L,pH=3,浴比1：30。     

Research on the dyeing behavior of wool fabric with natural phytolacca berry dyes北大核心

The natural dyes was extracted from mature Phytolacca berries for wool fabric dyeing, the influence of different dyeing process parameters on the dyeing depth was investigated in the case of direct dyeing, Al3+ as mordant was applied to improve the dyeing fastness, the antibacterial properties of dyed wool fabric was tested. The results showed that: the dyeing depth K/S value increased with the ratio of solid to liquid and tended to flatten when the ratio was 1 : 8. 33. The K/S value increased with temperature, the dyed fabric color changed from red to pale yellow when the temperature was over 60 °C. The K/S value declined with NaCl concentration increased. The K/S had maximum color yield when the pH value was 3.5. Al3+ could improve the washing and rubbing fastness of dyed fabric. The dyed fabric had good antimicrobial properties.