天然植物指甲花对真丝织物的染色工艺研究

指甲花在真丝织物上进行染色试验，选择染色温度、染浴pH值、媒染条件进行正交试验．结果表明：指甲花用量5％。染浴pH为4，80℃染色为宜；用铝盐或铁盐作媒染剂可提高染色深度和染色牢度．     

紫甘薯红色素用于大豆蛋白复合纤维织物的染色性分析

以紫甘薯红色素水溶液为染液,采用直接染色及黄土、亚铁盐和铝盐为媒染剂对大豆蛋白复合纤维织物进行染色.通过正交试验和综合分析确定了紫甘薯红色素上染大豆蛋白复合纤维织物的最佳工艺条件为:染液质量浓度5 g/L,染液pH值3,染色温度60℃,染色时间40 rnin,浴比1:40.织物经过媒染后,色牢度、色差和上染百分率都有明显提高,预媒染与后媒染相比,预媒染效果较佳,色彩红艳,亚铁盐在后媒染中,体现出了其增色效果,上染百分率大,但上染效果不稳定且颜色发暗.     

茶树果色素对真丝织物的染色性能

将茶树果天然色素在真丝织物上进行染色试验,选择染浴pH、染色温度、色素用量进行单因素试验.以铝盐和铁盐为媒染剂,讨论了预媒染处理对染色效果的影响.结果表明,茶树果天然色素对真丝织物的优化染色工艺为:色素用量5%(omf)、染色温度90℃、pH=3、浴比1∶50;预媒染处理可以提高染色织物的色牢度.     

新疆紫草色素在羊毛织物染色中的应用北大核心

为系统研究新疆紫草色素在羊毛织物染色中的应用效果,以正交试验优化了紫草色素在羊毛织物上的染色工艺条件。结果表明,采用直接染色工艺,在色素质量分数4%(omf)、温度80℃、pH 4.0及时间60 min的条件下,织物可获得较高的染色深度(K/S值9.2)。将铝盐、铁盐作为媒染剂,用新疆紫草色素对羊毛织物分别进行预媒染、同浴媒染以及后媒染染色,染后织物的各项色牢度比直接染色法均有所提高。     

羊绒纤维天然植物染料染色的探讨

探讨了3种印度产天然植物色素Eco orange、Blood red、Sea blue对羊绒纤维的染色性能.采用预媒法染色,比较铝盐和天然植物媒染剂HM的媒染效果,确定媒染剂种类;通过实验探讨媒染剂用量、预媒处理pH值、温度、时间对染色效果的影响,确定预媒处理的pH值、温度和时间;并对3种天然色素对羊绒纤维的上染性能和染色效果进行测试分析.结果表明,天然植物媒染剂HM媒染效果比铝盐好,媒染工艺为:媒染剂HM用量4%(owf),预媒处理pH值4,温度90℃,时间60 min.3种天然染料对羊绒纤维上染率偏低,耐皂洗牢度、汗渍牢度和水洗牢度达到3级以上,但日晒牢度较低.     

新疆紫草对兔毛织物的染色性能研究

采用新疆产紫草对兔毛织物进行染色,研究色素提取工艺、兔毛织物染色工艺以及环境友好型媒染剂对兔毛织物染色性能的影响。结果表明:在提取温度为50℃、提取时间为2 h、m(紫草)∶m(乙醇)=1∶10、乙醇体积分数为95%、提取次数为2次时,有效色素的提取率可以达到93.87%。采用直接染色工艺时,在染料用量为4%(omf)、pH为4、温度为90℃、时间为60 min的条件下,K/S值较高(9.2)。分别采用铝盐和铁盐作为媒染剂对兔毛织物进行预媒染、同浴媒染以及后媒染,测试染色织物的K/S值以及各项色牢度,结果表明:铝盐预媒染和铁盐后媒染可以达到较好的染色效果。     

富镧氯化稀土对玫瑰茄上染丝绸的影响

采用玫瑰茄天然染料对丝绸上染,用上染率和表观色深两个指标说明pH值、染色温度、染色时间、电解质用量对上染效果的影响。结果发现,玫瑰茄天然染料对丝绸上染的最佳工艺条件为pH值2~3、染色温度60℃、染色时间60min、NaCl用量3g/L。在此基础上,尝试用媒染工艺提高上染率和表观色深。在不同的媒染剂、媒染剂浓度和媒染方法下对丝绸进行上染,通过测定上染率和试样表面色深,得出最佳媒染剂为富镧氯化稀土浓度为1g/L时同媒染色,其上染率比玫瑰茄天然染料直接上染提高35.24%。     

洋葱皮上染亚麻织物的染色工艺

利用洋葱皮提取液对亚麻织物进行染色,同时使用稀土、铝盐和铁盐作为媒染剂进行媒染处理。通过正交试验和单因子实验法,确定洋葱皮提取液染亚麻织物的最佳染色工艺条件为:染料浓度30 g/L,染色温度50℃,时间30 min,pH值3。结果表明:经媒染染色的亚麻织物的色差值明显提高,摩擦色牢度和耐皂洗色牢度均较未媒染织物提高0.5～2级。     

紫背天葵色素的稳定性及其对羊毛织物染色性能的研究

从天然植物紫背天葵中提取色素,并对该色素在不同条件下的稳定性进行分析。将该色素上染羊毛织物,探讨不同染色方法和媒染剂对染色效果的影响,通过单因素优化、正交试验确定媒染染色的最佳工艺条件,测试了染色织物色度指标及牢度。结果表明:紫背天葵色素在酸性条件下表现出比较稳定的红色调,具有良好的耐热稳定性,对常见金属离子Fe~(2+)、Cu~(2+)等比较敏感。紫背天葵色素适于采用铝盐后媒染染色方法染羊毛织物。铝盐后媒染染色的最佳工艺条件为:媒染剂用量7%(owf),染液质量浓度40g/L,染色温度70℃,pH值4。媒染剂可以较大程度提升染色织物的色光。被染织物表现出良好的染色深度、色相和牢度。     

天然染料媒染剂的媒染性及抗菌性

选取木犀草、介壳虫、洋苏木、板栗、茜草和绿茶等六种天然染料对纯棉织物进行染色,分别采用直接法、预媒染、后媒染、同浴媒染等四种染色工艺,探讨了媒染方法、媒染剂种类对天然染料上染棉织物的影响,并对染色织物进行了抗菌性试验。结果发现,媒染剂可以改变染色的色相,提高染料的上染百分率和染色牢度,但对染色织物的抗菌性有不同程度的影响,其中以单宁酸作媒染剂,可使染色织物的抗菌效果明显提高。     

涤纶织物的天然茜草染料染色

采用明矾、硫酸亚铁、硫酸铁三种媒染剂,使用天然茜草染料对涤纶织物进行染色。结果表明,同浴媒染法染得的涤纶织物颜色最深,同时得到最优化的染色工艺为:Al^3+、Fe^2+、Fe^3媒染剂质量分数分别为0.5%(omf).2.5%(omf)、0.5%(omf),染液pH值为3,染色温度为135℃,染色时间为50min。     

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。     

稀土对姜黄天然色素上染丝绸的影响

文章采用姜黄天然色素对丝绸上染,用上染百分率和表观深度(K/S值)说明pH值、染色温度、染色时间以及电解质用量对上染效果的影响。再分别通过不同的媒染剂和媒染方法对丝绸进行媒染染色,确定染色工艺条件。实验发现媒染工艺可提高上染率和表观深度,采用富镧氯化稀土做媒染剂,及后媒染色工艺,其上染率比姜黄素直接染色提升27.53%,染色后丝绸试样耐洗色牢度3~4级,摩擦牢度4~5级,可满足生产和生活的需要。     

羊毛织物低温染色助剂协同效应的初步研究

羊毛纤维的传统染色一般在高温下进行,会导致纤维发黄,蛋白纤维强力下降,对纤维的纺纱性能也会带来不利影响。用弱酸黄、Lanaset（红、黄、蓝）染料对毛织物分别染色。发现Lanaset染料的上染率高于弱酸黄染料,所以选用Lanaset染料进行染色。经比较发现,协同染色时的上染率高于仅用低温助剂时的上染率;讨论了协同染色时低温助剂J用量、pH、染色时间和温度对上染率、K/S值、摩擦牢度的影响;协同染色时, pH为3.8,80℃,50 min的上染率好,说明助剂J与低温助剂具有协同效应。     

Dyeing of cotton fabric with Cuminum cyminum L. as a natural dye and its comparison with synthetic dye

In the present study, an attempt has been made to dye the industrially bleached woven cotton fabric with Cuminum cyminum L., commonly known as cumin seeds, as a source of natural dye which has not been exploited as natural dye by far. Optimization of natural dye extraction from cumin seeds with respect to buffer mediums; acidic, neutral and alkaline and dyeing parameters viz., dyeing time, dyeing temperature, dyeing pH and electrolyte concentration was done. Dyeing of cotton fabric was carried out with the aqueous extract of cumin seeds with and without mordant. Dyeings obtained without mordants were compared with those obtained by pre-mordanting with tannic acid and various metallic mordants viz., potassium aluminium sulphate, ferrous sulphate, copper sulphate, stannous chloride and potassium dichromate and their combinations. Typical shades obtained with the natural dye were matched with commercially available reactive dyes and compared with fastness properties and indicative costs. From the results, it could be said that the natural dye extracted from cumin seeds has good potential in the textile dyeing market and can be exploited further.     

Valorisation of almond shell waste in ultrasonic biomordanted dyeing: alternatives to metallic mordants

An agroindustrial waste, outer green shell of almond fruit has been valorised as a novel natural dye using chemical solvent-free extraction, small amount of metallic mordants, one-bath biomordanted dyeing, ultrasonic medium, auxiliary-free dyeing and washing. The main objective of this study is to evaluate biomordants vs. metallic mordants depending on heating system both in extraction and dyeing and to reveal alternatives to metallic mordants. Effects of conventional- and ultrasound-assisted systems on dyeing and fastness properties were investigated. Wool fabrics dyed using metallic mordants (alum, iron II sulphate, copper II sulphate and potassium dichromate) were compared with the samples dyed in conjunction with biomordants [powder of valex (acorn of Quercus ithaburensis ssp. macrolepis), pomegranate (Punica granatum L.) rind, rosemary (Rosmarinus officinalis) and thuja (Thuja orientalis) leaves] in terms of colour yield, colour coordinates and fastness properties. Heating system had significant effects on dyeing and fastness results. Power ultrasound did not present any advantage in colour yield increment while it presented different effects on fastness values depending on mordant and process type of which ultrasound was applied. Some biomordants could be replaced with metallic mordants depending on their types and heating system. They could produce completely different colour gamuts just like metallic mordants.     

苎麻茶叶生态染色技术研究

用茶叶生态染色技术对苎麻织物进行染色,制定出茶叶染苎麻织物的最佳工艺条件,但其上染率和固色率低、色牢度差.为改进染色效果,加入不同媒染荆和促染荆,发现其上染率、固色率和色牢度均提高,但苎麻织物的色光发生了变化,且添加剂也污染环境.利用STC-1阳离子化剂,对苎麻进行阳离子化改性后再用茶叶染色,发现其上染率、固色率和各项色牢度均有明显提高且不需要固色,各项指标均达到国家标准.     

Light Fastness and Shade Variability of Tannin Colorant Dyed Wool with the Effect of Mordanting Methods

Mordanting methods effect on color characteristics and fastness properties, particularly light fastness were evaluated in this study. Effect of metal mordants and their combinations on wool dyeing with Terminalia chebula natural dye were investigated and correlation between dye structures, effect of metal mordant and mordanting methods were established. Results reveal that T. chebula can be used as yellow dye with or without metal mordants to get a variable range of shades on wool with good color strength and fastness properties, and appreciable shade variations with mordanting methods observed. Color performances of dyed substrate indicated substantial improvement in depth of shades and color fastness in case of mordanted samples. Pre-mordanting with tin and post-mordanting with alum proved to be most effective for increasing K/S values of the dyed substrate under the optimum dyeing conditions.     

茶多酚在棉织物上的媒染性能

以硫酸亚铁、硫酸铁和硫酸铝钾为媒染剂,研究茶多酚(TP)在棉织物上的媒染性能.通过探讨后媒法中茶多酚处理的pH 值、温度及媒染剂用量对媒染性能的影响,测试染后织物的染色牢度和紫外防护性能,结果表明,茶多酚在酸性条件下较稳定,中性和碱性条件下酚羟基的电离和氧化程度增加.棉织物经硫酸亚铁、硫酸铁和硫酸铝钾媒染后分别呈紫灰色、浅灰色和浅黄色,得色深度随金属离子种类的不同而异,且具有良好的耐洗沾色和耐摩擦牢度,但耐洗变色牢度较差;此外,茶多酚染色能赋予棉织物较好的紫外防护性能.     

桑叶染色液提取法与染色性能

 为了探索提取方法和提取剂对桑叶染色液染丝绸的效果,采用沸水浴与微波法提取桑叶染色液,结果表明:染色液中的黄酮含量及对丝织物的上染率均以微波法较高。采用微波提取法,通过正交试验研究提取剂对上染率和色光的影响,结果表明对上染率影响最大的是表面活性剂用量,其次为NaOH浓度,再次为表面活性剂种类;对色光影响的次序是NaOH浓度大于表面活性剂用量和种类。采用微波提取法并在NaOH提取剂中加入表面活性剂的桑叶染色液染色效果较好。