Advanced Materials Research Vols. 821-822

Abstract: The structure and dyeing properties of the untreated, oxidized, chitosan treated cotton fabric were studied. Due to the deposition of chitosan particles, the cotton surface appeare to be uneven in comparison with that of untreated one as seen from the scanning electron microscopy (SEM); the FT-IR indicate the physical attachment of chitosan to the cotton fabric; high dye exhaustion and color yields (K/S) could be achieved on the chitosan treated cotton than that on the untreated one; with higher molecular-weight of the chitosan, the dyeability mentioned above are superior to that with lower molecular-weight.

Abstract: The nonionic reverse micelles used for dyeing cotton fiber were prepared with a non-ionic surfactant Triton X-100 (TX-100) by injecting small amount of reactive dye aqueous solution. The percentage of dye bath exhaustion in TX-100 reverse micelles and in bulk water was carried out and compared, respectively. The effect of inorganic salt was also discussed. The results indicated that the dyeing properties of the reactive dyes on cotton fabric increased with decreasing NaCl concentration and increasing initial dye concentration in TX-100 reverse micelle. The percentage of dye bath exhaustion obtained in reverse micelles was higher than that in bulk water.

Abstract: Natural dye sorghum red pigment is a kind of natural product from sorghum shell. In this paper, the sorghum red pigment was extracted from a black sorghum shell produced. The spectrum property of and photostability were analysized. The results showed that the maximum absorption wavelength of the sorghum red pigment changed with pH values. The light stability changed with pH values under light and no light conditions. Then rayon fabrics were dyed with direct dyeing method by orthogonal experiments. The result indicated that the sorghum red pigment has good property for rayon fabric dyeing, the rubbing and washing color fastness of rayon fabric samples are reach to the requirement of textile dyeing.

Abstract: Two reactive antibacterials were applied to finish for polyester/cotton (T/C) blend fabrics (20/80) and (35/65) and the optimal finishing process was obtained by orthogonal experiments. The finished fabrics were undergone the evaluation of antibacterial performance. For both of the two antibacterials and two T/C fabrics, the lowest inhibition rates for Staphyloccocus aureus were 85.97% and 79.19% after 50 washing cycles. The results indicated that the treated fabric had good antibacterial performance and washing durability.

Abstract: Tamarind gums from different areas in Thailand (Uthaithani, Ang Thong, and Nakhon Sawan) as a thickening agent were used for printing on polyester fabric with disperse dye in comparison to the commercial tamarind gum from India as presently used in textile printing. All tamarind gum samples presented high polysaccharide and protein contents. The obtained results indicated that the properties as colour values, colour strength (K/S), overall fastness properties, handling, and sharpness of printed polyester fabric were good to very good levels. Only slight differences were observed between our tamarind gum samples and commercial one.

Abstract: Schizandra is a mature fruit of Fructus Schisandrae Chinensis. The wool fabric was dyed with a natural schizandra dye. The adsorption kinetics and thermodynamics of using mordant and direct dyeing technology were studied. The influence of dyeing time and temperature on wool fabric were explored. The research result shows that the adsorption kinetics of schizandra dye on wool fabric meet the pseudo second-order kinetic model and the rate constant k₂ indicated a faster adsorption rate of mordant dyeing than for direct dyeing. The negative value of ΔG validated the feasibility of the sorption process, and the sorption of schizandra dye on wool fabric is spontaneity, whichever the dyeing method is direct dyeing or mordant dyeing.

Abstract: To increase the utilization of X-reactive dyes, reduce dyeing waste water, protect the environment and promote wider use of eco-dyeing technique, cycle technique was used to improve the reactive dyeing on cotton fabric. The results of experiment showed that hydrolysis X-reactive dye for one-bath-two-step dyeing can be effectively activated by activator in the residue and remains the original dye activity. The obtained results also indicated the cycle dyeing can be implemented 6 times by adding quantitative X-reactive dye, and dye used in cycle dyeing was less than that of the normal dyeing process. The K/S values, washing color fastness, rubbing fastness and breaking strength of the cycle dyeing sample changed a little in comparison with those of the conventional dyeing technology.

Abstract: Foaming finishing was a kind of dyeing and finishing technology with obvious energy saving effect. In this paper performance of foaming stock solution, compatibility of foam system, foaming finishing of cotton fabrics was investigated. The initial solution time, half life and foaming ratio of lauryl sodium sulfate as anionic foaming agent were determined. The obtained results indicated that advantages of foaming finishing of cotton fabrics included obvious low up-take and less pollution in crease resistant and water repellent finishing. The finishing performances of cotton fabrics with foaming finishing were the same level with that of the conventional padding finishing process

Abstract: This paper takes 31 leading textile and apparel trade countries or regions in the world as the research object. It constructs the adjacency matrix for the trade relations. Using social network analysis method, it measures the network structure of the global textile and apparel trade respectively from the perspectives of trade network diagram, network density, centrality. According to this result, it explores Chinas position on the global textile and apparel trade and interprets it.

Abstract: Combustion characters such as afterflame, color fading, thermal shrinkage, carbonization, smoke production provide a comprehensive reflection of the garment performance as a whole. Based on the flame manikin testing system, six kinds of garments which can be divided into two groups (PSA clothing and aramid clothing) were used for combustion experiments, and the combustion characters were analyzed under the same exposure conditions. Results show that the after flame time of PSA clothing was longer than that of aramid clothing, showing poorer flame resistant performance. Large areas of color fading happened to most of the test samples. The average thermal shrinkage of the PSA clothing is greater than the aramid clothing with similar weight and weaving structure. Clothing with larger fabric gram weight and thickness tends to have smaller shrinkage degree. The carbonization degree of PSA clothing was more serious than that of aramid clothing. Smoke amount may relate to the dying and finfish of fabric.