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389 Aktuelle Fachpublikationen in Coloration Technology

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Improved mechanism of polyester dyeing with disperse dyes in finite dyebath

21.07.2017 | Bingnan Mu, Helan Xu, Yiqi Yang, Coloration Technology, 2017

A new sorption mechanism of polyester dyeing with disperse dyes in water is proposed. It is considered dye aggregates could not be sorbed unless they turn into single molecules. However, this theory could not explain numerous sorption phenomena: sorption continues when equilibrium dye ...

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A review of the effects of colour and light on non‐image function in humans

18.07.2017 | Stephen Westland, Qianqian Pan, SooJin Lee, Coloration Technology, 2017

This paper reviews current knowledge on non‐image‐forming aspects of vision. Developments in the last 20years have included the discovery of a fifth class of human visual pigment (melanopsin), in addition to the three classes of photopsin to be found in the cones and rhodopsin in the rods in ...

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Assessing the variability of colour‐rendering indices using a random test‐colour method

03.07.2017 | Pedro J. Pardo, María I. Suero, Ángel L. Perez, Jairo Mena, Manuel Melgosa, Coloration Technology, 2017

This paper addresses the way in which the random selection of different sets of samples influences the values of two colour‐rendering indices analogous to the ones proposed by the International Commission on Illumination (CIE Publ. 13.3, 1995), Ra, and the Illuminating Engineering Society (IES ...

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Synthesis and application to cotton of a polymeric black colorant prepared by grafting of reactive dyes to polyvinylamine

21.06.2017 | Jingjing Yang, Jian Li, Xiaoxu Teng, Coloration Technology, 2017

A novel polymeric black dye was synthesised by grafting yellow, orange, red, and blue reactive dyes onto polyvinylamine. Such a polymeric black dye takes the onus away from dyers to worry about the compatibility of individual dyes. The polymeric black dye was characterised by Fourier transform ...

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Revisiting the weighting function for lightness in the CIEDE2000 colour‐difference formula

21.06.2017 | Manuel Melgosa, Guihua Cui, Claudio Oleari, Pedro J. Pardo, Min Huang, Changjun Li, Ming Ronnier Luo, Coloration Technology, 2017

We have used 13 experimental datasets (7420 colour pairs) to study the performance of the weighting function for lightness proposed by the CIEDE2000 colour‐difference formula, because it has been suggested that this function can be improved by using the weighting function for lightness SL = 1 ...

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Structure and hydrophilicity of azo‐dye‐derived rotaxane: density functional theory approach

16.06.2017 | Hyerim Kim, Seung Geol Lee, Jong S. Park, Seung Soon Jang, Joonseok Koh, Coloration Technology, 2017

We investigated the most probable molecular structure, energy, and corresponding properties, including the solvation energy and binding free energy in solution, for non‐encapsulated azo dyes using quantum mechanical density functional theory (DFT). The structures of non‐encapsulated azo dyes ...

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Synthesis and application to cellulose of reactive dye precursor of anti‐bacterial N‐halamine

14.06.2017 | Zhiming Jiang, Wenjun Peng, Rong Li, Dan Huang, Xuehong Ren, Tung‐Shi Huang, Coloration Technology, 2017

To achieve textile dyeing and functional finishing in one process, a bleach‐resistant reactive dye precursor to anti‐bacterial N‐halamine was synthesised by reacting a type of dichlorotriazine reactive dye with 4‐amino‐2,2,6,6‐tetramethylpiperidine. The synthesised compound, which can be ...

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Mordant dye application on cotton: optimisation and combination with natural dyes

13.06.2017 | Yi Ding, Harold S. Freeman, Coloration Technology, 2017

It is well known that cotton fibres can be dyed through the formation of coordinate bonds involving cellulose chains, mordants such as alum, and natural dyes such as alizarin. Similarly, synthetic dyes known as mordant acid dyes can be used to dye wool fibres. Unlike mordant dyes on wool, the ...

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Spectroscopic and conductometric studies on the interactions of thionine with anionic and nonionic surfactants

15.05.2017 | Sinem Göktürk, Güneş Keskin, Remziye Yeşim Cantürk Talman, Neşe Çakır, Coloration Technology, 2017

In this study, the interaction of thionine, a cationic dye, with anionic [sodium dodecyl sulphate (SDS), lithium dodecyl sulphate (LiDS), and sodium dodecylbenzene sulphonate (SDBS)], nonionic (Tween 20 and Triton X‐100), and binary mixtures of anionic and nonionic surfactants was studied by ...

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Spectrophotometric colour matching algorithm for top‐dyed mélange yarn, based on an artificial neural network

15.05.2017 | Jiajia Shen, Xiang Zhou, Coloration Technology, 2017

Colour, the first element of quality control of textile products, is a complex subject relating to physical optics, psychology, and the human visual system. Colour matching remains one of the major problems in the textile industry. Mélange yarn is a class of textile product with a specific ...

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