Treatment of Wool with Metal Salts and their Effects on its Properties

Bendak, A.; Raslan, W. M.; Salama, M. A.

doi:10.1080/15440470801983629

Cited by 15 publications

(18 citation statements)

References 15 publications

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“…Wool is a reactive material because of its main functional groups, including peptide bonds, side chains of amino acid residues, and disulfide cross-links [9]. Wool is known to bind a wide range of metal ions, such as mercury, copper, aluminum, nickel, zinc, cobalt, chromium, silver, and gold [10][11][12]. There have been many reports where native wool fibers [13,14] and chemically modified wool fibers [15][16][17][18] have been used to remove metal ions from industrial effluent and/or recover precious metal ions from solutions.…”

Section: Introductionmentioning

confidence: 99%

Wool micro powder as a metal ion exchanger for the removal of copper and zinc

El‐Sayed

Salama

Kantouch

2014

Desalination and Water Treatment

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A B S T R A C TWaste wool fibers (WF) were oxidized and ball milled to enhance the exchanging ability toward some metal ions, namely copper and zinc. Wool fibers were oxidized with hydrogen peroxide and tetra acetyl ethylene diamine, followed by grinding process. Optimization of the exchanging medium with regard to the metal ion concentration, pH, and exchanging time was performed. It was observed that the ability of the wool powder (WP) and oxidized wool powder (OWP) to exchange greater amount of metal ions than the ordinary waste wool fibers. Mostly, current results verify a significant ability of the OWP to exchange copper and zinc ions from their aqueous medium. Nevertheless, the ability of all wool substrates used to exchange copper is more than their ability to exchange zinc, and as the pH of the exchanging medium increases, the uptake % of both copper and zinc ions by WF or WP increases to reach its maximum at pH 6. The efficiency of WF, WP, or OWP to adsorb copper and zinc ions after a number of adsorption/desorption tests was also studied.

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Section: Introductionmentioning

confidence: 99%

Wool micro powder as a metal ion exchanger for the removal of copper and zinc

El‐Sayed

Salama

Kantouch

2014

Desalination and Water Treatment

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“…[1,2] Researchers utilized various methods for modifying the surface of wool and other textile fibers using various chemical and physical modification methods including, treatment with various enzymes and reagents, [3][4][5][6][7][8][9][10][11] grafting of different monomers, [12] application of supercritical carbon dioxide in scouring and dyeing, [13] microencapsulation techniques, [14] corona discharge, [15] gamma and ultraviolet irradiations, [16,17] ultrasound vibration, [18,19] and plasma functionalization, [20][21][22] However, some of these methods often damage other excellent mechanical and bulk properties of natural and synthetic fibers while they are time and energy consuming methods which in turn increase the manufacturing costs. [23] Some others have difficulties in the textile industry as development of scale-up strategies from laboratory to the industrial scale.…”

Section: Introductionmentioning

confidence: 99%

Effect of Colloidal Dispersion of Clay on Some Properties of Wool Fiber

Gashti

2013

Journal of Dispersion Science and Technology

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This work was carried out to characterize the changes induced on wool fiber by clay treatment. Technical measurements were studied including Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal degradation analysis (TGA), scanning electron microscopy (SEM), moisture regain measurement (MRM), and tensile strength test (TST). The intensity of major peaks in FTIR spectra of the clay treated sample is in favor of chemical changes of the polypeptide functional groups. DSC results indicated that clay treatment of wool enhances heat and thermal barrier properties of fiber. TGA results stated lower thermal degradation of clay treated wool compared with untreated one. One of the main advantages of clay application on wool could be its positive effect on the moisture absorption of wool.

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“…The starting pH value of 3% copper salt solution is 5.5 that gives maximum metal uptake as reported elsewhere [19,20]. This pH value was slightly increased during the treatments to about 6.0 that may be due to partial formation of metal hydroxides [19,20]. Both copper and nickel uptake/100 g fiber were estimated for untreated and plasma-treated polyamide 6 fabric.…”

Section: Metal Uptakementioning

confidence: 73%

Low Temperature Plasma/Metal Salts Treatments for Improving Some Properties of Polyamide 6 Fibers

Raslan

El-Khatib

El-Halwagy

et al. 2010

Journal of Industrial Textiles

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The effect of plasma treatments with oxygen and argon gases on some properties of polyamide 6 fibers is thoroughly investigated. The treated fabric with oxygen plasma is further treated with some metal salts solutions such as copper sulfate, nickel sulfate, and silver nitrate to study their effect on the antibacterial properties of polyamide fibers. The changes induced in roughness, wettability, and dyeability of polyamide 6 fabric are given. The surface morphology of treated fabric is characterized by using scanning electron microscopy. Density and crystallinity of the treated fabric are also evaluated. The antibacterial activity of treated polyamide 6 fabrics with oxygen plasma/metal salts solutions is improved. The dyeability and fastness properties are also enhanced.

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Treatment of Wool with Metal Salts and their Effects on its Properties

Cited by 15 publications

References 15 publications

Wool micro powder as a metal ion exchanger for the removal of copper and zinc

Wool micro powder as a metal ion exchanger for the removal of copper and zinc

Effect of Colloidal Dispersion of Clay on Some Properties of Wool Fiber

Low Temperature Plasma/Metal Salts Treatments for Improving Some Properties of Polyamide 6 Fibers

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