新型纤维素纤维表面改性技术研发成功

一种新型纤维素纤维表面改性技术经品德实业（太原）有限公司几年的研究开发，最近获得成功。 新推出的这种再生纤维素纤维改性技术，是采用纳米晶化层处理技术，对纤维素纤维表面进行改性处理，使纤维达到柔软滑糯、湿强度好、弹性极佳、悬垂性好、染色绚丽、富有光泽的效果。据了解．此项技术属国内首创，国际领先。     

纤维素纤维低盐低碱染色叔胺催化剂应用分析

叔胺化合物作为染料中的固色催化剂,能够起到使活性染料对纤维素纤维可在较为低的碱盐用量的条件下染色的作用,从而减少印染工业中染液废水对环境造成的污染,减少对生态环境的破坏。以不同的催化剂用量、活性染料染色时的条件改变及改性工艺方面的应用,可对纤维素纤维的染色时上色率及得色深度的产生影响。实践证明:叔胺类催化剂能对活性染料染色产生明显的催化作用,叔胺类催化剂对棉织物的染色改性及其他染色条件的改进有重要的意义。     

硅氮系阻燃再生纤维素纤维染色工艺的研究

采用正交试验设计确定了活性红3BE、活性黄3RE、活性黑B三支染料对硅氮系阻燃再生纤维素染色的最佳工艺,比较了硅氮系阻燃再生纤维素纤维和普通再生纤维素纤维的染色性能,分析了活性染料染色对硅氮系阻燃再生纤维素纤维阻燃性能的影响。结果表明,硅氮系阻燃再生纤维素纤维的染色性能与普通再生纤维素纤维接近,色泽鲜艳且水洗色牢度优良;活性染料染色对硅氮系阻燃再生纤维素纤维的阻燃性能影响很小。     

以纤维活化改性法使纤维素纤维染色的新途径

本文综述了近年来用活性染料在纤维素纤维染色方面的成就。研究工作最多的工作之一是纤维的改性，使之具有反应性。本文介绍了几种使纤维活化的方法，它们具有减轻染色污水排放的潜力。     

以纤维活化改性法使纤维素纤维染色的新途径

本文综述了近年来为活性染料在纤维素纤维染色方面的成就，研究工作最多的工作之下是纤维的改性，使之具有反应性，本文介绍了几种使纤维活化的方法，它们具有减轻染色污水排放的潜力。     

聚环氧氯丙烷胺化物对涤/棉的处理

使用纤维素纤维改性剂聚环氧氯丙烷胺化物(PECH-amine)对涤/棉进行处理,讨论了PECH-amine浓度、氢氧化钠浓度及改性方法等影响因素对涤/棉染色的影响.试验结果表明.用此改性剂改性涤/棉中的棉,可以大幅度提高活性染料在改性涤/棉上的上染率及固色率,在中性、无盐条件下,中、低浓度染色甚至可以达到尽染,使实现清洁染色的目的成为可能.     

纤维素纤维的接枝共聚改性

介绍了利用化学改性方法之一——接枝共聚改善纤维素纤维性能的方法,纤维素纤维接枝共聚改性方法可分为自由基聚合、离子型聚合、缩聚。接枝共聚法既可改善纤维素纤维的缺点,又可保留纤维素纤维原来优良的性能,并能制备出具有特殊用途的功能性纤维素纤维。     

改进亚麻纤维轧染染色性能的研究

通过高温条件下尿素对亚麻纤维进行改性,提高了其轧染时的染色性能和染色深度。对改性工艺条件包括尿素溶液的浓度、高温处理温度及时间进行了详细的研究和优化。通过对改性前后对亚麻纤维进行的电子显微镜观察,探讨了改性后的亚麻纤维染色性能提高的原因,并测定了改性前后亚麻纤维力学强度的变化。     

活性染料无盐染色技术

本文从低盐活性染料、纤维素阳离子改性、无盐染色助剂、染色工艺四个方面介绍了无盐染色技术的新进展。重点讨论了纤维素阳离子改性。     

戊二醛交联改性再生纤维素纤维的研究

以氯化1-丁基-3-甲基咪唑离子液体为溶剂对木质纤维素进行溶解并纺丝,得到再生纤维素纤维,再使用戊二醛对再生纤维素纤维进行交联改性,研究其交联改性条件对再生纤维素纤维力学性能的影响。结果表明:经戊二醛交联后,再生纤维素纤维的断裂强度有明显的提高;在戊二醛质量分数为4%,反应温度为50℃,反应时间为30 min的交联条件下,所得再生纤维素纤维的断裂强度为3.2 cN/dtex。     

Diffusion properties of reactive dyes into net modified cotton cellulose with triazine derivative

Cotton fabric is chemically modified with a 1,3,5‐triazine derivative containing multireactive and multicationic groups. The diffusion properties of the reactive dyes into net modified cotton cellulose are investigated. When the dyeing temperature is raised, the dye uptake increases gradually and approaches equilibrium after dyeing for 60 min. The diffusion coefficients at different temperatures and the activation energy of the dye are discussed. Compared with unmodified cellulose, the diffusion kinetics of the dye in the net modified cotton cellulose show significant changes. The activation energies of dyes in net modified cotton fibers are much lower than those of dyes in unmodified cotton. The dyeing behavior of the modified cotton is analyzed and compared with the unmodified cotton. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2166–2171, 2007     

Relationship between cellulase treatment and the dyeability with a direct dye for various kinds of cellulosic fibers

The cellulosic fibers were dyed to equilibrium with Congo Red before and after cellulase treatment. The fibers examined were rayon, polynozic, cupra, flax, and cotton. It was found that the volume term for dyeing (V) was associated with weight loss (WL) caused by the cellulase treatment, for the original fibers. Apparent affinity for dyeing (AF) for the cellulase-treated fibers was calculated using a constant value of V obtained for each kind of the original fibers. The results led to the assumption that there would be two kinds of the regions that could be accessible to dye. One would be the region that was readily digested by the enzymatic hydrolysis. The other would be the region that was additionally developed by the attack of cellulase. The previously dyed fibers were hydrolyzed by cellulase. It was found that the physical bondings that formed between cellulose and Congo Red molecules would block the hydrolysis by cellulase for all the fibers examined. It was also assumed that there would be a region that could be accessible to cellulase but not entirely to Congo Red. © 1993 John Wiley & Sons, Inc.     

改性棉织物及其染色性能的研究

本文采用高碘酸钠溶液将棉纤维选择性氧化成二醛纤维素,再用自制阳离子助剂WLS-10对氧化棉纤维进行处理。探讨了高碘酸钠和WLS-10助剂用量、处理时间、处理温度等条件对染色性能的影响。确定出高碘酸钠和WLS-10助剂改性处理的最佳工艺条件,并确定了改性棉织物最佳染色工艺,评价了改性效果。研究结果表明：改性棉织物采用无盐...     

Factors affecting the dyeability of cotton crosslinked with polycarboxylic acid

Improved dyeing properties of cotton crosslinked with polycarboxylic acids are produced by addition of reactive nitrogenous additives, such as alkanolamines and hydroxyalkyl quaternary ammonium salts, to the treatment formulation. Both N-methylolamides and polycarboxylic acids are effective for crosslinking cotton and bonding reactive nitrogenous additives to the cellulosic substrate, but dyeing characteristics of the finished fabrics are very different. In this study, the influence of the reactive additives and dyebath pH on the colour yields of cotton crosslinked with polycarboxylic acids and then dyed with anionic dyes were determined. Emphasis is on the dyeing properties of cotton finished with 1,2,3,4-butanetetracarboxylic acid or citric acid non-formaldehyde crosslinking agents, and alkanolamine hydrochloride or hydroxyalkyl quaternary ammonium salt additives.     

Dyeing Behaviour of Cotton after Pretreatment with Reactive Quaternary Compounds

Previous attempts to modify the dyeability of cellulosic fibres for anionic dyes by pretreatment with reactive quaternary agents are discussed critically. Agents of the epoxypropyl type are compared with those of the chlorotriazine type and experimental investigation of their mode of action is reported, with particular reference to the preparation and evaluation of two classes of chlorotriazine-type quaternary agents. Comments are made on the possible mechanism of dyeing of cotton modified by pretreatment in this way. It is concluded that the ideal method of quaternising pretreatment for enhancing the dyeability of cellulose has not yet emerged.     

Characterisation of novel regenerated cellulosic,viscose, and cotton fibres and the dyeing properties of fabrics

There is a global demand for constant increase in the production of textile fibres. Currently, the market for cellulosic fibres is dominated by cotton and viscose fibres. However, new alternative cellulosic fibres are being sought to meet the growing demand. The dyeing properties of novel fibres aiming at the marketplace are among the properties that determine their applicability to textiles. Recently, a novel process for producing cellulosic fibres, the Biocelsol process, has been scaled up so that the spinning of yarn from Biocelsol fibres is now possible. In this study, the reactive dye Levafix CA Blue was applied to cellulosic fabrics made from viscose, cotton, and Biocelsol yarns. The crystalline structure and morphology of the fibres were studied by Fourier transform infrared spectroscopy and field‐emission scanning electron microscopy. The crystalline structure and morphology of the Biocelsol fibres resembled those of viscose fibres, but, owing to higher water absorption, the Biocelsol fabric had a higher dye exhaustion. The colour yield of the Biocelsol fabric was 62% and 41% higher than that of cotton and viscose fabrics respectively, suggesting that less dye is needed to gain a shade in Biocelsol fabric than in viscose and cotton fabrics.     

Dyeing Properties of Reactive Cationic Dyes Containing a Vinyl-sulphonvl Group on Acrylic Fibre Blends

The preparation of reactive azo cationic dyes containing a vinylsulphonyl group derived from 2-aminobenzothiazole and its derivatives is described. Their dyeing properties on blends of acrylic–cellulosic, polyester–cellulosic fibre and on cotton and synthetic fibres are investigated. The relationship between absorption spectra and pH of dye solution is assessed.     

非反应型阳离子助剂在一浴法无盐轧蒸染色工艺中的应用

使用自制的非反应型阳离子助剂对棉织物进行预处理,分别选用活性黄K-RN、活性艳红K-2BP、活性艳蓝KN-R进行一浴法无盐轧蒸染色试验.确定了阳离子助剂处理棉织物的最佳方式和使用的最佳浓度,并与常规有盐染色进行性能对比.结果表明,采用一浴法无盐轧蒸染色对染样的固色率、色光和牢度未产生影响.阳离子助剂的使用能够替代电解质的加入,染料利用率提高25％～40％.棉纤维阳离子化能够在相对较低的温度下进行,提高了该工艺的适用范围,最终达到节能减排的目的.     

Using carbon black nanoparticles to dye the cationic‐modified cotton fabrics

Carbon black (CB) aqueous dispersion was prepared and used to dye the cationic‐modified cotton fabrics through exhaust dyeing process. The effects of CB concentration, CB nanoparticles size, dyeing bath pH, dyeing time and dyeing temperature were investigated. The color yields of dyed fabrics were evaluated on Kubelka‐Munk value K/S. The surface morphologies of cationic modified and nonmodified cotton fabrics were measured by video microscope. The fabrics presented 18.9 of the color yield with the dyeing conditions: the dyeing solution contained 2% o.w.f. CB and dyeing at 80°C for 30 min with pH 13 using a 50 : 1 liquor ratio. The images of the video microscope demonstrated a clear surface profile for the cationic‐modified cotton fabrics dyed with smaller CB particle size solutions. These results indicated that CB nanoparticles were suitable for dyeing the cotton fabrics. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011