Papers by Keyword: Cotton Fabric

Abstract: This research work was concerned with the stability of cacao dye and the application of this dye for cotton fabric dyeing by two techniques, namely direct dyeing and mordanting. The optimal conditions for cotton direct dyeing with cacao dye were carried out at 100°C for 60 min. It was observed that with an increase in the dye concentration, the ultraviolet protection factor values ranged good for cotton fabric. The results confirmed that natural dye have potential applications for fabric dyeing and producing UV protective cotton fabric.

Abstract: Multi-functional scouring agent (M.F.S.A.) successfully can replace caustic soda, soda ash, scouring agent and H₂O₂ –bleach stabilizer. It has strong properties of washing, dispersing, emulsifying and chelating, particularly applicable to bleach bath. In this experiment three processes like desizing, scouring and bleaching were done by single stage. Grey fabrics (woven) were treated by using various concentrations of M.F.S.A. and H₂O₂ at different temperature variation. The maximum value of whiteness of treated fabric were found at 80°C by using the concentration of M.F.S.A. and H₂O₂ (3.0 g/L and 3.0 g/L respectively). Also minimize required number of chemical used for bleaching process; here only two chemicals used for whole process. No additional chemicals used for water treatment and washing of treated fabric. After process only cold wash were done. Finally by using less concentration of both M.F.S.A. and H₂O₂ have got comparatively better result for whiteness and tensile strength.

Abstract: With recent development in the field of wearable devices for biomedical applications, various studies have been conducted on the fabrication of electrically conductive circuit on flexible substrate materials such as paper or textile. In this project, we propose the fabrication of electrically conductive circuit on cotton fabric using simple wax patterning method. Using this method, hydrophilic and hydrophobic regions were patterned on the fabric and graphene-poly (3,4-ethylenedioxythiophene): poly (styrenesulfonic acid) (graphene-PEDOT:PSS) ink was deposited on the hydrophilic region using pipetting method. Conductive lines with higher conductance were fabricated by multiple deposition of the conductive ink and electronic components were successfully attached on the fabric to develop a simple fully functional flexible circuit.

Abstract: in this paper ionic liquid 1-butyl-3-methylimizolium chloride was applied to modify the cotton fabric. The modified cotton fabric was characterized by FT-IR spectra, microscopy determination and the thermogravimetric analysis (DSC). The dyeing performances of the modified cotton fabric were determined. The results indicated that the dyeing performances of the modified cotton fabric were more than that of the unmodified cotton fabric.

Abstract: The cotton fabric was modified with polycarboxylic acid, silica sol and KH-550, and the modification effect was characterized by the capillary effect value, tension strength value, antistatic capability value and wetting contact angle. The results showed that the hydrophilic and tension strength of the modified fabrics were much better than those of non-modified ones. But the antistatic property of the modified cotton fabric was slightly lower.

Abstract: In the process of using dye turmeric, the behavior of conventional dyeing and ultrasonic dyeing were compared. The processing of conventional dyeing and ultrasonic dyeing, such as dyeing time, dyeing temperature, pH value, and the amount of salt on the effect of K/S value, were investigated. The results show that the dye-uptake was greatly improved by using ultrasound. Meanwhile, the ultrasound dyeing was demonstrated more dominant in energy saving.

Abstract: The surface modification process for cotton fabric which was oxidized first, and then crosslinked with collagen was studied. The optimum oxidation process was as follows: concentration of sodium periodate 0.6g/L, time 2.5h, temperature 40°C, ratio of water and cotton fabric was 100:1. The method for surface modification of cotton fabric was determined from comparative analysis, and the optimum process: collagen solution concentration 6%, glutaraldehyde concentration 5%, reaction 40min at 30°C, ratio of water and cotton fabric was 100:1. Compared with original cotton fabric,the breaking strength and elongation of collagen modified cotton fabric decreased, while the dyeing percentage with acid dyes was increased and this means the surface of modified cotton fabric was covered with a large component of collagen.

Abstract: This study focused on the development of antibacterial cotton fabric using natural bioactive agent as the extracts from mango (Mangifera indica L) seed. The cotton fabrics have been treated with the extracts from mango seed. Moreover, the tamarind gum from Tamarind indica seed was used as an alternative natural mordant and compared with general chemical mordants (alum and ferrous sulfate) in order to search for eco-friendly process. Treated fabrics were tested for antimicrobial activities against Gram-positive cocci and Gram-negative rods. We have found that in terms of antibacterial activity, the treated fabrics combined with natural mordant were more effective against both tested bacteria. From the results, the tamarind gum could provide the synergic antibacterial activity when applied with the extracts from mango seed and obviously used as substitutes for toxic textile chemicals.

Abstract: Textile-based electrodes are a potential choice for wearable and continuous monitoring of electrocardiogram measurements. In this paper, we present a novel composite textile electrode for ECG measurement. We chosen cotton jersey knit fabric as the substrate. Based on the substrate, polypyrrole (PPy) was coated chemically only and plated chemically electrochemically successively, respectively, to form PPy/cotton fabric composite electrode. The obtained results suggest that, first, both the composite electrodes can measure the ECG signals including P-waves, QRS complex and T-waves clearly, second, both the composite electrodes are poorer frequency dependence than Ag/AgCl electrode, and the one deposited chemically only is the poorest, whats more, the composite electrode deposited chemically only obtains the highest signal to noise ratio (SNR).

Abstract: Cotton fabrics pretreated with cationic polyacrylamide with quaternary ammonium group were dyed with three reactive dyes in the absence of salt by cold pad-batch dyeing method. The influences of various conditions in the dyeing process, including urea dosage, selection of alkali agent and its dosage, batching time and batching temperature on colour yield, were analyzed. Fastness properties of the dyed cotton and the dye penetration were investigated between the pretreated and untreated cotton. The results showed that the dyes K/S values of the pretreated cotton were improved compared with those of the untreated one, in addition, the penetration and fastness properties of the dyed cationic cotton were satisfied for application.