变色纤维的开发和应用

概述了变色纤维的起源、概念与主要类别．分别阐述了变色纤维的溶液纺丝法、熔融纺纹法、后整理法以及接枝聚合法等变色生产技术．展望了变色纤维的广阔应用前景。     

新型功能材料——变色材料在纺织品中的应用

介绍了变色材料的分类、变色机理以及在纺织品中的应用;变色纤维和变色染料微胶囊的制造方法,并展望了变色材料在纺织品领域的发展趋势。     

变色材料在纺织品上的应用

介绍了变色材料的分类、变色原理及在纺织品中应用的意义和应用方法;介绍了变色纤维和变色染料(颜料)微胶囊的制备方法和用于纺织品中的变色染料应具备的条件;并列举了应用实例。     

变色材料以及其在纺织品中的应用

变色材料的优化和微胶囊技术的应用,促进变色纺织品飞速发展,形成了从纤维、纱线到织物的各种变色纺织材料。     

变色纺织品及其应用

文章介绍了加工变色纺织品的三种方法及其变色纺织品的应用,重点介绍了变色纤维及其加工方法。     

热敏变色材料及其在纺织品上的应用

介绍了热敏变色材料的种类及其变色原理，从印花、染色和纤维技术等方面叙述了热敏变色纺织品的制造方法。     

新型智能纤维及其纺织品的研究进展

智能纤维是一种能对特别刺激进行判别并按预定方式智能反应的纤维.文中介绍了光敏变色纤维、热敏变色纤维、调温纤维、形状记忆纤维和导电纤维等智能纤维的研究和应用状况.     

家纺变色织物的开发与前景

变色纤维是一种高性能纤维。文章描述了变色纤维的生产技术和发展应用状况。依据家纺设计理念指出了家纺变色织物三个创新型设计方案和案例以及该系列产品开发的可能,为以后变色纤维制品的开发提供借鉴。     

变色纤维与织物

<正>变色纤维或织物是在其生产中添加某种具有特殊结构,在受到光、热、水分或辐射等外界刺激后具有可逆性自动改变颜色功能的物质。主要可分为光敏变色和热敏变色。1光敏变色     

变色纤维与纺织品的开发与应用

所谓变色纤维是一种具有特殊组成或结构的、在受到光、热、水分或辐射等外界条件刺激后可以自动改变颜色的纤维。变色纤维目前主要品种有光致变色和温致变色两种。前者指某些物质在一定波长的光线照射下可以产生变色现象，而在另外一种波长的光线照射下（或热的作用），又会发生可逆变化回到原来的颜色；后者则是指通过在织物表面粘附特殊微胶囊，利用这种微胶囊可以随温度变化而颜色变化的功能，而使纤维产生相应的色彩变化。并且这种变化也是可逆的。     

新型聚氨酯合成革

采用新型的变色聚氨酯树脂及其相关原材料制作出应力变色聚氨酯合成革。讨论了应力变色聚氨酯合成革变色效果的影响因素及解决方法,提出了应力变色合成革的生产工艺,该应力变色合成革具有自然的变色效果和良好的变色恢复性及耐划刻、耐挠曲性。     

毛纺织品色变的原因

受到环境如光、热、潮气和大气污染、细菌侵蚀、（残留）化学药品如留在纤维上的润滑剂、荧光增白剂与盐（来自洗涤工序）或沾染的化学药品的影响可能是毛纺织品在生产、存储、运输或使用过程中产生色变的原因。本文解释了色变原因从而可估计损伤起因的分析方法。同时预测了毛纺织品色变趋势以及阻止色变的方法。     

养殖珍珠的辐照处理

采用电子加速器对淡水和海水养殖珍珠进行辐照实验, 获得了大量的辐照改色样品. 实验表明, 辐照产生的颜色是稳定的, 辐照后珍珠不具有残余放射性. 淡水珍珠辐照改色的效果明显, 海水珍珠只能得到稍带银灰色的效果. 为了探讨珍珠辐照改色的机理, 对天然的文石和方解石晶体也进行了辐照实验. 通过系统对比辐照前、后珍珠的各种性质, 总结了辐照珍珠的鉴别特征, 讨论了辐照改色的机理. 认为珍珠中的有机成分与水的放射化学反应及Mn在辐照过程中的氧化作用是珍珠辐照改色的主要原因.     

合成变石的宝石学特征及紫外-可见光吸收光谱分析

运用紫外-可见光吸收光谱等测试方法对合成变石样品的颜色特征进行了分析,初步研究了合成变石的致色元素及其质量分数对变色效应的影响。分析结果表明:合成变石常见的紫色调现象与吸收光谱中紫区未被完全吸收有关,通过添加少量有利于紫区吸收的致色元素,有望减弱合成变石的紫色调;随着V元素的增加,橙黄区吸收带的分布趋于合理,使红光与绿光的透过更趋平衡,有利于产生较理想的变色效应;合成变石的紫外-可见光吸收光谱与其结晶学方向有密切关系,(001)方向的吸收光谱在橙黄区有强吸收带,具有明显的变色效应特征,(100)和(010)方向虽有强二色性,但对变色效应贡献不大。     

棉用染料的耐氯浸牢度与应对措施

还原染料、活性染料、直接耐晒染料对棉的染色物,在含活性氯的水中,会发生变褪色。但是,不同结构的染料,其变褪色的程度不同。以盐素牢度提升剂处理,染料结构不同,其处理效果也大不一样。     

Kinetics of colour change of bamboo shoot slices during microwave drying

The effect of microwave power on colour change kinetics of bamboo shoot slices was investigated during microwave drying. Colour changes were quantified by tri‐stimulus Hunter L (whiteness/darkness), a (redness/greenness), and b (yellowness/blueness) system. These values were also used for calculation of total colour change (ΔE), chroma, hue angle, and browning index (BI). Microwave drying as expected changed colour parameters because of browning. The values of L and b decreased, while values of a and ΔE increased during drying. Mathematical modelling of colour change kinetics indicated that L, b, chroma and BI could be defined using a first‐order kinetic model, while a, ΔE and hue angle could be defined using a zero‐order kinetic model. Considering together colour deterioration and quality of dried bamboo shoot slices at higher power reveals the need of process standardisation for getting good quality product.     

Upcycling of waste textiles into regenerated cellulose fibres: impact of pretreatments

Abstract

Due to several factors including textile waste accumulation and the use of environmentally harsh chemicals, the textile industry has become the second worst polluting industry worldwide. Therefore, significant effort is currently underway to find solutions to reduce this impact. In this study, coloured waste cotton fabrics were regenerated through a wet spinning process into new coloured fibres, hence recycling not only the fibre materials but also the colour. The impact of pretreatments on the colour retention and degree of polymerization of waste cotton-based fabrics was investigated in terms of the degree of polymerization of the waste cotton, the rheological properties of the spinning dope and the ability to maintain the original colour of the waste fabric. The spun fibres showed mechanical strength similar to commercial viscose fibre. The colour from the original fabric was retained under selected acid pretreatment conditions.     

Some challenges in modern hair colour formulations

Formulation of hair coloring product involves two stages, first a development of product base followed by formulation of desired shade. During that process a special consideration needs to be given to a whole range of product characteristics such as dye stability in the product medium, colour wearability on hair, light fading and finally rheology of the product. This paper reviews improvement in permanent coloring products as it relates to dye and base composition. Examples are shown where a reduction or elimination of certain dyes, m-phenylenediamine or sodium picramate, improves long term stability and product performance on hair. In cases when only reduction of the dyes was carried out, improvement in stability was achieved through their use as secondary colour contributors and not as primary ones. There are also other composition aspects that impact colour performance of the final product. For example, pH of the coloring mixture has a pronounced effect on the final colour developed in hair. It is shown that a shift in tonality caused by pH change can be predicted for finished product using a simple system composed of the main coupler-intermediate pair employed in the product. The colour response to pH change of this simple system was found to mirror that of the product. This predictability can be used as a formulation tool to develop more efficient dye systems. Effects of some functional materials on colour result such as propylene glycol, ascorbic acid or silicone are also shown.     

Modelling of fibre‐diameter‐dependent light scattering to determine diameter corrections for colour measurement of wool

In this paper, fibre‐diameter‐dependent light scattering during measurment of wool colour was quantified using the extended multiplicative signal correction technique. Furthermore, a simple‐to‐apply model has been developed to correct each of the CIE (International Commission on Illumination) X, Y and Z values obtained from colour measurement of fibrous masses. The model was successfully applied to both polypropylene (PP) and wool fibres, though different parameter values were used in each case, indicating different patterns of internal light scattering between PP and wool fibres. After the model corrections, the diameter dependence of measured wool yellowness (Y – Z) was either eliminated or significantly reduced for each of seven sheep flocks distributed widely over the wool‐growing regions of Australia.     

高密细旦涤纶/棉交织物的染整加工

探讨了高密细旦涤纶与棉交织物的染整加工工艺，采用溢流染色机分别对细旦涤纶和棉上染不同颜色，获取特殊的双色效果，提高了产品的附加价值。