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The photochemical decolorization of two dyes, namely Acid Yellow 54 and Basic Blue 9, was studied using the UV/H2O2 and UV/Fenton processes. The effects of the amount of H2O2 and FeSO4 as well as the initial pH solution on decolorization kinetics of both the dyes were investigated. The pseudo-first order kinetic model was applied to predict the decolorization of the selected dyes at the different operational conditions and results showed that this model fitted very well with the experimental data. The obtained results also showed the efficiency of UV/Fenton process to quickly degrade aqueous effluents polluted by Acid Yellow 54 and Basic Blue 9 compared to the UV/H2O2 process.

Ballistic clothing is a crucial safety element that helps to save lives of its wearers. According to the protection level, the ballistic vest is reinforced by one or two armor panels designed to resist to attacks destinated to upper parts of the body. The resistance behavior of ballistic body armor depends on several factors. The most important factors are related to the ballistic fabric properties such as the type of fabric, its thickness, its structure, its strength and strain, and the type of the employed resin. In this review paper, the factors influencing the ballistic performances of soft armor panel and hard armor panel are presented. They are investigated based on an in-depth review of previous research studies and experimental test results. This paper also reports the various methods developed by the researchers to improve the performance of ballistic materials. Thus, ballistic material manufactures and researchers could find some guidelines on promising materials and structures that can be used to build efficient body armors. [ABSTRACT FROM AUTHOR]

This paper presents an experimental study of impact of water drop on a surface in a spreading regime with no splashing. Three surfaces were studied: virgin glass, coating film and woven cotton fabric at different construction parameters. All experiments were carried out using water drop with the same free fall high. Digidrop with high-resolution camera is used to measure the different parameters characterising this phenomenon. Results show an important effect of the height of the free fall on the drop profile and the spreading behaviour. An important drop deformation at the surface impact was observed. Then, fabric construction as the weft count deeply affects the drop impact. For plain weave, an increase of weft count causes a decrease in penetration and increase in the spreading rate. The same result was obtained for coated fabric. Therefore, the impact energy was modified and the drop shape was affected, which directly influenced the spreading rate.

Neroline-loaded microcapsules based on β-cyclodextrin polyurethane material were fixed on cotton fabric using an impregnation technique. The process parameters were optimized so as to achieve a maximum microcapsules deposition and binding. Simultaneous evaluation and optimization of the effects of interdependent parameters was achieved using an experimental design based on response surface methodology. The selection of the mathematical model and its use for statistical analysis were done by the least squares method using the Minitab 19 software. The optimal impregnation conditions yielding a fabric mass gain of 8.56% are as follow: 21 g·L−1 for the microcapsules concentration, 31 g·L−1 for the polyurethane cross-linker concentration and 0.72 g·L−1 for the cationic surfactant concentration. The morphological and mechanical characterization, and air permeability evaluations of the resulting cosmetotextile fabric show the suitability of the process in terms of applicability and end-use properties. [ABSTRACT FROM AUTHOR]

As the long-chain fluorochemical molecules used to obtain water and stain repellent textiles persist in the environment, chemical suppliers are trying to develop new products in order to find ecological alternatives. The current most developed substituents are based on molecules with shorter fluorine-carbon chains. In the current work, a long-chain fluoropolymer and its short-chain homologue were applied on cotton fabrics at different finishing conditions. Textile properties such as wettability, air permeability, mechanical properties and handle properties, for untreated and treated cotton samples were investigated. Laundering test was also performed to predict the durability of the finishing. The obtained results demonstrated that cotton samples treated with short-chain fluoropolymer show good water repellency and good washing durability. The use of short-chain fluoropolymers, as nontoxic and eco-friendly finishing chemicals, has allowed obtaining comparable performances to those produced with long chain fluoropolymer. [ABSTRACT FROM AUTHOR]

The photochemical decolorization of two dyes, namely Acid Yellow 54 and Basic Blue 9, was studied using the UV/ H2O2 and UV/Fenton processes. The effects of the amount of H2O2 and FeSO4 as well as the initial pH solution on decolorization kinetics of both the dyes were investigated. The pseudo-first order kinetic model was applied to predict the decolorization of the selected dyes at the different operational conditions and results showed that this model fitted very well with the experimental data. The obtained results also showed the efficiency of UV/Fenton process to quickly degrade aqueous effluents polluted by Acid Yellow 54 and Basic Blue 9 compared to the UV/H2O2 process. [ABSTRACT FROM AUTHOR]

Copyright of Industria Textila is the property of Institutul National de Cercetare-Dezvoltare pentru Textile si Pielarie and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industria Textila is the property of Institutul National de Cercetare-Dezvoltare pentru Textile si Pielarie and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Attempts have been made to replace the mostly used reducing agent (sodium sulphide), and the most effective reducing agent (sodium dithionite), with an environment- friendly reducing sugar (glucose). This comparison is based on the redox potential and pH used under different concentrations of reducing agent, caustic soda and sodium carbonate. The dyeing performance resulting from the reduction of the CI Leuco Sulphur dye Black 1 by each one of the studied reducing agents is appreciated by measuring the colour yield and by evaluating dyeing fastness. The obtained results show that glucose can offer an environmentally safe alternative to sodium dithionite and sodium sulphide as a reducing agent in sulphur dyeing processes. [ABSTRACT FROM AUTHOR]