Level fast dyeing of wool with nucleophilic amino‐alkyl dyes and crosslinking agents‐Part 2: using bifunctional crosslinking agents

Lei, X P; Lewis, David M.; Wang, Y N

doi:10.1111/j.1478-4408.1995.tb01691.x

Cited by 12 publications

(11 citation statements)

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“…This indicates that the (1) number of bonds formed were not enough to withstand the mechanical stress during the hand wash, (2) reactivity of the acryloyl group of CiBA was relatively low under the conditions used, and/or (3) premature agglomeration of the AuNPs sterically hindered the reaction between CiBA and wool. [277,278] The colour change was consistent with the results obtained by SEM analysis (Figure 6.4) and visual examination. [280,281] However, visual examinations suggested that the colour change between the first and the second wash was minor.…”

Section: Resultssupporting

confidence: 89%

“…The colour fixation is estimated as approximately 50%, significantly less than the previously reported 80%. [277] This finding indicates that the reactivity of the acryloyl moiety of the CiBA was lower than expected and that fewer chemical Au CiBA -wool bonds formed as anticipated.…”

Section: Resultsmentioning

confidence: 63%

“…Previous work has documented the effectiveness of crosslinking agents in covalently binding dyes to wool. Lei et al, [277] for example, report that the bisacrylamide MBA links nucleophilic aminoalkyl dyes with the amino or thiol residues of wool. However, these studies have focused on colouring wool with conventional reactive dyes, creating a product that fades when exposed to light.…”

Section: Resultsmentioning

confidence: 99%

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Merino Becomes Noble: A study of nanogold, wool and nanogold–wool composites

Kolb¹

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<p>Our research group, led by Professor J. H. Johnston, has developed a novel approach for dyeing merino wool with nanogold [gold nanoparticles (AuNPs)] by coupling the chemistry of gold with that of wool fibres. This utilises the plasmonic properties of nanogold to create attractive fabric colours ranging from pink to purple to grey. The newly created fabric benefits from the synergistic effect of the unique properties of strong merino wool and valuable gold, i.e. the innovative product is intensely coloured, colour fast, naturally hydrophobic, anti-microbial, anti-static as well as having first-rate wearing comfort. This innovation has attracted substantial interest from industry resulting in the collaboration of our research group with leading fabric manufacturers and designers. However, the colour range of this unique high-value product is limited. It was desirable to enlarge the colour range by developing new strategies to create wash fast nanogold–wool composites with a broad colour spectrum. Thus my research aimed to identify and understand the fundamental principles that govern the formation of nanogold–wool composites. Based on the derived knowledge, it was aimed to develop a methodology to covalently link pre-synthesised AuNPs of various colours to the surface of New Zealand merino wool fibres in order to obtain wash fast nanogold–wool composites with a broad colour spectrum. This involved the synthesis, functionalisation and characterisation of colloidal AuNPs, and their application as colourants for wool. The methodology followed three general steps: (1) synthesis of colloidal gold, (2) preparation of the wool surface for the colouring processes, and (3) production of nanogold–wool composites. Each work stage was accompanied by thorough analysis and characterisation of the intermediate and final products. Studying colloidal gold systems and nanogold–wool composites which were previously reported provided the insights that were necessary to develop new methodologies to strongly link AuNPs to wool. For instance, nanogold stabilised by oleylamine produces especially bright pink nanogold–wool composites; however, the AuNP–wool bond is relatively weak. Hence, several AuNP–wool bond types were intensively studied, and as a result of combining the knowledge gained, two approaches were developed to provide a proof-of-concept for the creation of wash fast nanogold–wool composites. These approaches involved a specifically designed, in-house-synthesised capping agent for AuNPs as well as a crosslinker that binds functionalised AuNPs to the reactive sites of wool. In addition to achieving the project aims, my work produced three new systems of colloidal gold in aqueous medium which stand out due to their properties. Specifically, these properties were: (1) being stable without significant electrostatic or steric stabilisation, (2) having a unique surface functionalisation allowing for selective chemistry, and (3) having an intense blue colour as a result of controlling the AuNP shape during synthesis. All three systems show application potential for wool colouration, ligand exchange reactions, surface-enhanced Raman spectroscopy (SERS), and in the field of biomedicine.</p>

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 63%

Section: Resultsmentioning

confidence: 99%

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Merino Becomes Noble: A study of nanogold, wool and nanogold–wool composites

Kolb¹

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“…However, hue change occurred when those dyes were used as the crosslinkable imino and amide groups were connected with dye chromophores, and then their exact applications were restrained. 16,17 Lewis et al 17 have even studied the dyeing properties of wool with nuclephic aminoalkyl dyes and crosslinking agents, such as aminoethyl C.I. Reactive Red 3, aminoalkyl C.I.…”

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confidence: 99%

Synthesis and crosslinking dyeing on cotton fabrics of a novel hemicyanine fluorescent dye

Zhang

Qin

et al. 2014

Textile Research Journal

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A novel hemicyanine fluorescent dye, namely trans-4-[ p-( N,N-Diethyl)-amino-styryl]- N-aminoethyl pyridinium chloride (DEASPCl-N(AE)), was synthesized and characterized by using infrared, proton nuclear magnetic resonance, electrospray ionization-mass spectrometry, elementary analysis, ultraviolet-visible and single-photon fluorescence spectra. DEASPCl-N(AE) has been employed in dyeing cotton fabrics following crosslinking dyeing procedures. The fixation rate test, dimethylformamide bleeding experiment, and color fastness test certified that DEASPCl-N(AE) was linked to the cotton fiber through covalent bonds. Cotton fabrics dyed with DEASPCl-N(AE) exhibited excellent fluorescent properties and could be used as fluorescent reddish orange clothing.

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“…Indosol and Bazasol crosslinking dyes were reported to fix on fibers with crosslinker and exhibited excellent fixation. However, since the crosslinkable imino and amide groups were connected on dye chromophore, hue change occurred when the dyes were used and their application was, thus, restrained [5,6]. Lewis et al [6] developed alkylamine crosslinking dyes of aminoethyl CI Reactive Red 3, aminoalkyl CI Reactive Red 120, aminoethyl CI Reactive Red 58, etc.…”

mentioning

confidence: 99%

Synthesis and Application of Crosslinking Blue Anthraquinone Polyamine Dye with High Fixation

Tang

Zhang

et al. 2007

Textile Research Journal

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A polyamine crosslinking dye has been synthesized and applied to silk and cotton using crosslinking agents 2-chloro-4,6-di(amino-benzene-4'-β-sulfatoethylsulfone)-1,3,5- s-triazine and 2,4-dichloro-6-(aminobenzene-4'-β-sulfatoethylsulone)-1,3,5- s-triazine, respectively. The effect of pH, temperature and concentration of crosslinker on fixation of the dye has been discussed in detail. The fixation of this polyamine dye reached near 100 % and the dyeings were fast to dimethylformamide at the boil. This indicated that the dye fixation was achieved by covalent bonding with the crosslinking agent, which acted as a bridge between the fiber and the dye molecules. The dyed samples showed excellent fastness to washing and rubbing.

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Level fast dyeing of wool with nucleophilic amino‐alkyl dyes and crosslinking agents‐Part 2: using bifunctional crosslinking agents

Cited by 12 publications

References 1 publication

Merino Becomes Noble: A study of nanogold, wool and nanogold–wool composites

Merino Becomes Noble: A study of nanogold, wool and nanogold–wool composites

Synthesis and crosslinking dyeing on cotton fabrics of a novel hemicyanine fluorescent dye

Synthesis and Application of Crosslinking Blue Anthraquinone Polyamine Dye with High Fixation

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