Ultrasound aided KMnO4-acid systems for bleaching linen fabric

Hebeish, A.; Sharaf, S.; El‐Hady, M. M. Abd

doi:10.1016/j.carbpol.2010.09.052

Cited by 24 publications

(9 citation statements)

References 13 publications

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“…Moholkar and Warmoeskerken (2003), studying the mechanism of ultrasound-assisted mass transfer, affirmed that due to the cavitation, the permeability of the outer part of the yarn increases and the diameter of the so-called stagnant core of the yarn becomes smaller, resulting in a higher ratio of convection. The most frequently studied ultrasoundassisted textile technologies are bleaching (Hebeish et al 2011;Davulcu et al 2014) and dyeing (Benli and Bahtiyari 2015). The positive effect of ultrasound is generally assigned to the cavitation on the fibre surface, but the reduction of the particle size also has an important role in some dyeing (Lee and Kim 2001) and functional finishing technologies (Abramova et al 2013;Surina and Andrassy 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of mild alkali/ultrasound treatment on flax and hemp fibres: the different responses of the two substrates

et al. 2016

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Flax and hemp fibres were treated by various combinations of water/diluted alkaline solution and stirring/ultrasound, respectively. Changes in the microstructure (scanning electron microscopy) and porous structure (low-temperature nitrogen adsorption), removal of non-cellulosic materials (weight loss, FTIR), mean fibre diameter, and adhesion of the polypropylene matrix to the fibres (micro-bond test) were investigated. For both types of fibres, removal of (FTIR) was observed. The fibre diameter of hemp was decreased by several treatments, most of all by stirring in alkali and subsequent sonication in water, while the ultrasound applied in alkali solution did not change the fibre fineness. This can be attributed to the dual effect of ultra-sonication: the swelling effect of alkali combined with ultrasound energy probably served the sticking of inter-fibrillar material rather than their dissolution. Fibre diameter of flax did not change in any circumstances. The porosity of hemp in the mesopore range increased, while that of flax decreased by alkali treatment and subsequent sonication. The reason for this difference might be the dissimilar cell wall structures of the two bast fibres, the high arabinose content of the hemp, and/or the cottonisation of hemp. No treatments altered the fibre-matrix adhesion measured by pulling out the fibre from a micro-droplet of polypropylene.

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Section: Introductionmentioning

confidence: 99%

Effect of mild alkali/ultrasound treatment on flax and hemp fibres: the different responses of the two substrates

et al. 2016

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“…However, the value of tendering factor (S = 0.24) demonstrates that the fabric remains undamaged even at the maximum ozone dose (50 g/L), while achieving the whiteness comparable to the control (Topalovic et al 2007). The maximum ozone dose also improves the absorbency of fabric but it is still less than control because high temperature is required to completely remove the hydrophobic impurities (Hebeish et al 2011). …”

Section: Optimization Of Ozone Bleaching Process Using Surfactant As mentioning

confidence: 98%

A Pilot-Scale Application of Ozone to Bleach Raw Cotton Fabric Using Various Additives

Arooj

Ahmad

Chaudhry

2014

Ozone: Science & Engineering

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The influence of various additives on the efficiency of optimized ozone bleaching process at pilot scale has been discussed in this study. The results reveal that the best whiteness (63.79) and strength of bleached fabric is achieved with the addition of surfactant (2 g/L) at an ozone dose of 50 g/h, pH 5, and ozone treatment time of 45 min at room temperature. The dyeing quality of ozone-bleached and hydrogen peroxide-bleached fabric samples is almost identical. The analysis of variance of the experimental data validates that the process parameters have significantly affected the efficiency of ozone bleaching process.

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“…The high rate of mass transfer in textile processing steps has been studied as an alternative to conventional methods [59,60]. Yachmenev et al [61] have reported that a combined treatment of enzyme/sonication on cellulosic textiles offers significant advantages such as less consumption of expensive enzymes, shorter processing time, less fiber damage, and better uniformity of treatment.…”

Section: Ultrasound Colorationmentioning

confidence: 99%

Emerging Green Technologies and Environment Friendly Products for Sustainable Textiles

Islam

Mohammad

2014

Textile Science and Clothing Technology

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Textiles production processes such as sizing, scouring, bleaching, mercerizing, dyeing, printing, and finishing are characterized by a huge consumption of water, energy, and chemicals. The toxic effluent discharge generated in these processes mainly contains by-products, residual dyes, salts, acids and alkalis, auxiliary chemicals, and other solvents. Their discharge into neighboring water bodies is posing a serious threat to the flora and fauna. At present, however, development in the textile and clothing industry has focused on the use of some green technologies as alternatives to conventional wet processes to promote sustainable production and consumption of textiles and clothing. In recent years, emphasis has been put on developing cleaner, cost-effective, and value-added textile products for a variety of applications without compromising the issues related to health and the environment. This chapter is intended to provide a summary of recent developments in the coloration and finishing of textile fibers and to provide details of the ecofriendly strategies developed to reduce the waste generation in the textiles and clothing sector. Finally, their implications in the sustainability of clothing products are also outlined.

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Ultrasound aided KMnO4-acid systems for bleaching linen fabric

Cited by 24 publications

References 13 publications

Effect of mild alkali/ultrasound treatment on flax and hemp fibres: the different responses of the two substrates

Effect of mild alkali/ultrasound treatment on flax and hemp fibres: the different responses of the two substrates

A Pilot-Scale Application of Ozone to Bleach Raw Cotton Fabric Using Various Additives

Emerging Green Technologies and Environment Friendly Products for Sustainable Textiles

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