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紫外线辐射处理的羊毛染色性能研究 总被引:3,自引:2,他引:1
采用紫外线辐射处理羊毛 ,通过X射线光电子能谱仪分析了处理前后纤维表面的化学变化。研究结果表明紫外线处理使羊毛纤维鳞片表层的胱氨酸氧化 ,二硫键断裂。未处理和经紫外线处理 6 0min的羊毛 ,分别在不同温度 4 5℃ ,5 0℃ ,5 5℃和 6 0℃染色。实验显示 ,处理后的纤维上染速率提高 ,染色K S值增加 ,表明紫外线辐射处理改善了羊毛纤维的染色性能。此外 ,在研究了处理前后纤维的染色吸附和扩散性能后 ,发现处理后纤维染色扩散系数提高 ,染色吸附性能不变。紫外线处理破坏了羊毛纤维鳞片表层二硫键形成的致密的网状结构 ,使羊毛的初始染色壁障被打破 ,染料容易从染浴向纤维内扩散。 相似文献
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为了改善羊毛的亲水性,提高羊毛的染色性能,采用[BMIM]Cl、[EMIM]Br、[BMIM]Br 3种不同的离子液体对羊毛纤维进行处理,筛选出处理效果最佳的离子液体,同时分析处理温度、离子液体质量分数和处理时间的影响。研究结果表明:用离子液体处理羊毛纤维,其表层结构遭到破坏,而且用[BMIM]Cl离子液体处理效果最好,处理的最佳工艺为:[BMIM]Cl离子液体的质量分数为30%、染色温度为70℃、处理时间为10 min。经过处理后,明显提高了羊毛的亲水性,色牢度达到要求,改善了羊毛的染色性能,还可以实现低温染色。 相似文献
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采用离子液体BmimCl/DMSO混合体系对羊毛进行整理,以改善其亲水性能。通过SEM观察了处理前后羊毛纤维表面形态的变化,利用X射线衍射仪分析了羊毛纤维结晶度的变化,采用MIT测试了处理前后羊毛的机械性能损伤。结果表明:经过BmimCl/DMSO处理后,羊毛纤维表面部分鳞片层被剥除,纤维内部致密的二硫键交联网络和氢键结构被破坏,羊毛纤维的亲水性有较大提升,羊毛纱线的断裂延伸率明显提高。此外,用新诺伦中性红和酸性普拉红对处理前后的羊毛分别进行恒温染色。结果显示,由于经BmimCl/DMSO处理后羊毛纤维鳞片层被破坏,促进了染料分子向纤维内部扩散,使羊毛染色性能有较大提升。 相似文献
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介绍了在羊毛纱线染色过程中加入[Bmim]Cl离子液体以提高上染率的方法,测试并分析了[Bmim]Cl离子液体处理和羊毛染色同浴过程中[Bmim]Cl离子液体和温度对羊毛染色性能的影响。结果表明:随[Bmim]Cl离子液体浓度的增加,羊毛纱线的上染率先增大后减小,用量达30%时上染率最大,羊毛纱线的断裂强力呈下降趋势,干摩较高、湿摩不够理想;离子液体处理和羊毛染色同浴法可实现羊毛的低温[(60~70)℃]染色,同时可以获得较高的强力保留率。 相似文献
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《印染》2019,(20)
采用离子液体BmimCl/DMSO混合体系对羊毛进行整理,以改善其亲水性能。通过SEM观察了处理前后羊毛纤维表面形态的变化,利用X射线衍射仪分析了羊毛纤维结晶度的变化,采用MIT测试了处理前后羊毛的机械性能损伤。结果表明:经过BmimCl/DMSO处理后,羊毛纤维表面部分鳞片层被剥除,纤维内部致密的二硫键交联网络和氢键结构被破坏,羊毛纤维的亲水性有较大提升,羊毛纱线的断裂延伸率明显提高。此外,用新诺伦中性红和酸性普拉红对处理前后的羊毛分别进行恒温染色。结果显示,由于经BmimCl/DMSO处理后羊毛纤维鳞片层被破坏,促进了染料分子向纤维内部扩散,使羊毛染色性能有较大提升。 相似文献
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改性涤纶与羊毛同浴染色的研究 总被引:2,自引:1,他引:1
通过对纤维K/S值的测定,研究了温度、pH值、载体等因素对改性涤纶与羊毛同浴染色时不同涤纶的上染性能和羊毛沾色的影响.结果表明,在相同的温度下,改性涤纶EDDP、ECDP具有更高的上染率.与改性涤纶同浴染色的羊毛对分散染料的沾色明显减少.羊毛/涤纶同浴染色时,染浴pH值大于5时,分散染料发生还原,涤纶上染率明显减少,羊毛沾色色调改变.羊毛/涤纶体系中加入适当的载体可使涤纶上染率有所提高,而过高的载体加入量反会使涤纶上染率下降. 相似文献
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活性染料对甲壳胺纤维染色性能的研究 总被引:8,自引:6,他引:8
讨论了中性盐用量、纯碱用量及染色温度对甲壳胺纤维用活性染料染色的影响,比较了甲壳胺纤维、棉和羊毛的可染性。研究结果表明,盐、碱剂及温度对染色的影响与所用的染料结构有关:中性盐对含4个以上磺酸基的染料起促染作用,对含3个以下磺酸基的染料起缓染作用;乙烯砜型或含乙烯砜染料适宜在低温条件下染色,随纯碱用量的增加,其上染率和固着率降低;双一氯均三嗪类染料可在中温条件下染色,增加纯碱用量可提高其上染率和固着率。甲壳胺纤维的可染性远高于棉和羊毛,较容易染得深浓色。 相似文献
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In this study, plasma treatment was used to modify the surface properties of wool fabrics by partial removal of the scales and the lipid layer. The effects of low‐pressure pseudo‐discharge in oxygen gas on the dyeing properties of untreated and pretreated wool fabrics are discussed. Three dyes were used, namely acid dye, 1:2 metal complex dye and reactive dye. Different exposure times (1–5 min) of oxygenated plasma treatment were effected to improve the hydrophilicity, wettabillity, dyeability and the washing and light fastness properties of the dyed wool fabrics (which were increased by increasing the plasma exposure time). Also, the washing and light fastness properties of the chitosan‐treated wool fabrics were investigated. In addition, the presence of chitosan before or after the plasma exposure had no effect on the washing and light fastness properties of the wool fabrics. 相似文献
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《Journal of Natural Fibers》2013,10(2):35-48
Abstract The effect of lipase pretreatment on the dyeability of wool fabric with reactive dyes is thoroughly investigated. Two enzymes are applied, lipase type II and lipolase 100 L, type EX. The effect of treatment conditions such as temperature, time, and concentration of enzyme on the dyeability of wool fabric is studied. A comparative study between exhaustion and padding techniques of treatment is investigated. Kinetic investigations are also given on the dyeing process of wool fabric with reactive dyes. The treatments revealed improvement in the dyeability of wool with reactive dyes. The use of the enzyme pretreatment enables wool dyeing under mild temperature conditions with increasing dye consumption and an increase of the rate of dyeing. This is reflected as energy saving and reduction of pollution impact. 相似文献
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Lyocell纤维染色性能及工艺研究 总被引:7,自引:1,他引:6
研究了Lyocell纤维的染色性能,主要包括上染速率、上染百分率、固色率、表观深度、深染性和染色牢度等,并与棉及粘胶纤维进行了对比,分析了Lyocell纤维染色性能改变的原因,同时对其染色工艺进行了探讨。 相似文献
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文章讨论了羊毛纤维在低温条件下(85~ 95℃),用α-溴代丙烯酰胺型毛用活性Lanasol染料染色应用的性能,主要研究了助剂、pH值、固色时间对低温染色工艺中染料上染百分率的影响.实验结果表明:Lanasol活性染料本身在常规染色中工艺简单,上染百分率较好,在低温染色实验中,经过改变助剂等参数并优化工艺后,使羊毛纤维上染百分率和固色率均有一定程度的提高;同时,由于使用的染色温度较低,羊毛纤维在染色后单纤断裂强力也得到改善;而且,通过助剂的优化,染色后纤维的牢度也得到提升. 相似文献
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Disperse dye structure affects the dyeability of poly (lactic acid) (PLA) fiber due to the low dyeing temperature and the short dyeing time. Thus, the dye uptake value of PLA fiber is low for some disperse dyes and needs to be improved. In this study, the dyeability of PLA fiber is improved with the addition of synthesized octa (aminophenyl) polyhedral oligomeric silsesquioxane (OAP-POSS) nanoparticle during the melt spinning process. The effects of dyeing conditions including dyeing temperature and time, OAP-POSS concentration, disperse dye types, and concentrations are investigated on the dyeability properties of PLA fiber samples. The tensile, thermal, and morphological properties of the fiber samples are also characterized by tensile testing, differential scanning calorimetry, scanning electron microscopy, and transmission electron microscopy. It is concluded that the percent crystallinity and the tensile strength of pure PLA fiber decrease as the added amount of OAP-POSS increases. According to the dyeing results, OAP-POSS, which behaves as a good sorbent for the disperse dyes used in this study, greatly improves the dyeability of PLA fiber, especially for disperse dyes with low dye uptake values. 相似文献
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Wool was pretreated with microwave and then dyed with Lanasol reactive dye and Palatin 1:1 metal complex dye by conventional exhaust dyeing process. Adsorption behaviour and diffusion coefficient were also studied. A higher dye uptake rate and increased diffusion coefficient of treated fibres are observed in the dyeing test after microwave pretreatment, but the adsorption behaviour remains constant. Microwave pretreatment has a slightly damaging effect on the surface scale-like structure of wool, which results in the reduction of the concentration of S–S bonds in keratin. It was considered that the surface damage improved the absorption of dye molecules by the wool fibres during dipping and the diffusion of dye molecules into the wool fibres. 相似文献