The Influence of Hydrophobicity Factor on Wool Fibre Dyeing With Anionic Dye

Abstract

In this study two alkylphenolethoxylates with different ethoxylation degree c.a. EO 9 (Lanasan LT<em> </em>as NPE-1) and EO 40 (Disponil AA P43<em> </em>as NPE-2<em>) </em>were selected with the purpose to evaluate the influence of hydrophobicity of nonionic surfactants on wool dyeing efficiency. Anionic C.I. Acid Orange 7<em> </em>dye was used to carry out an experiment in dyeing of wool fibre at 30_&nbsp;&deg;C or 60_&nbsp;&deg;C temperature using wool fabric which was prepared for dyeing by extraction of the lipid materials soluble in chloroform and methanol mixture. The surfactant with a shorter hydrophilic chain (NPE-1) intensified the adsorption of the dye. This fact allowed to presume that the dye diffusion into wool fibre might be influenced by hydrophobic interaction between the surfactant and hydrophobic sites of wool fibre. The results of surfactants adsorption showed that the interaction of NPE-2 with the fibre was weak as compared to that of NPE-1<em>.</em> The results of the investigation suggest that the ethoxylated nonylphenol of a lower hydrophility index might interact with the active sites of wool fibre more intensively than that of a higher index of hydrophility.<p><a href="http://dx.doi.org/10.5755/j01.ms.17.3.596">http://dx.doi.org/10.5755/j01.ms.17.3.596</a></p

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

“…[15][16][17][18][19] Because the clay used is hydrophilic in nature due to its surface hydroxyl groups, it is capable of forming hydrogen bonds with water molecules, thereby clay treated wool samples are more accessible for water molecules penetration with increasing the whole fiber inter-chain hydrogen bonds. This could be an advantage of clay treatment to improve the breathability of wool fibers.…”

“…[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.…”

Study of age-related changes in the physicochemical properties of Cocamidopropyl betaine (CAPB): A Case Study of the Production of Cocamidopropyl Betaine on an Industrial Scale

“…The incomplete quaternization process as shown in Figure 1 (step 2) stands as the main factor behind the rise in free amidoamine content exceeding 0.5% in the nal CAPB betaine. The presence of unreacted free amines is considered the most signi cant impurity in cocamidopropyl betaine formulations [14]. The effect of aging period on the unreacted free amine content was studied and is illustrated in Figure 5.…”

Analysis of Different Breed of Protein Fibres and their Influence on Mechanical Properties of Woollen Blend Yarns

“…The wool is affected by the same bacterial, viral, fungal diseases. Treigienė obtained that the treatment of the wool fibre at relatively low temperature changed the color of the wool fibre [14]. Dry and especially wet wool fibers changed their colors more intensively reacting to prolonged heating time.…”