An Investigation in the Use of Ozone Gas in the Bleaching of Cotton Fabrics

Perıncek, Seher; Duran, Kerim; Körlü, Ayşegül; Bahtiyari, M. İbrahim

doi:10.1080/01919510701509578

Cited by 68 publications

(62 citation statements)

References 10 publications

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“…A major loss, however, that ozonation results, is high loss of degree of polymerization (48%) and breaking strength (19%) which were both low with hydrogen peroxide [5]. Lemeune et al [7] measured 40% loss of degree of polymerization after ozonation on the basis of viscosity determined by cupri-ethylene di-amine at an ozone dose of 20 mol equiv per 100 gram of fiber (about 3% by weight) while no loss of DP was observed with as high as 50% by weight of chlorine dioxide.…”

Section: Introductionmentioning

confidence: 99%

“…Ozone has been proved to give high bleaching efficiency in all these contexts; not only for cotton [1][2][3] but for other types of natural fabric; such as Angora rabbit fiber [4], jute [5] wool, silk, nylon and even for paper pulp [6]. Ozone, rather, has long been in use for pulp bleaching; earlier, in Totally Chlorine Free (TCF) paper pulp production due to the benefits of improved selectivity, brightness, production economy and stability, and after reduction in market value of the TCF pulp, in Elemental Chlorine Free (ECF) sequences [6].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Various Additives in Cotton Bleaching Efficiency

Nazir¹,

Arooj²,

Kashif³

2017

J Environ Anal Chem

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Bleaching efficiency is evaluated by the degree of whiteness, absorbency, copper number, tendering factor, strength or strength loss, dye uptake, alkali solubility, degree of polymerization and chemical transformation. Recent lab-scale studies have proven ozone to bleach with efficiency comparable to the conventional bleaching agents and hydrogen peroxide at faster rates without requiring heating or any other supportive treatment with less energy and water. Ozone alone, however, showed poor efficiency in pilot-scale determinations, suggesting the use of certain additives to support it in performing its bleaching action. This research was conducted to compare the influence of methanol, isopropanol, oxalic acid and sodium borohydride on improvement in the bleaching performance of ozone in terms of whiteness, absorbency and burst strength. The additives brought an overall improvement in whiteness, absorbency and burst strength of cotton but had significant difference in their performance, as assessed from the pvalues yielded by one-way ANOVA applied on SPSS 20. Methanol outclassed other three in its performance bringing the highest increase in whiteness and burst strength and the highest reduction in fabric absorbency.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of Various Additives in Cotton Bleaching Efficiency

Nazir¹,

Arooj²,

Kashif³

2017

J Environ Anal Chem

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“…Estudos mostram que o melhor grau de branco obtido por ozonização em tecido de algodão por impregnação ocorre em pH 6,5-7,5, em pick-up de 60%, em temperatura ambiente com 5 minutos de exposição foi de 33,62 pela fórmula Stensby no espectrofotômetro Minolta modelo 3600d (Konica Minolta, Toquio, Japão) [21,22].…”

Section: Introductionunclassified

Pre-alvejamento de materiais têxteis com ozônio e avaliação de suas propriedades de superfície, físicas e tintoriais

2017

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A inovação dos processos de beneficiamento de materiais têxteis é cada vez mais importante para possibilitar a redução no consumo de água e nos tempos de processo na indústria têxtil. O consumo de fibras têxteis no Brasil em 2014 foi de 13,3 kg por habitante, e para beneficiar estes tecidos são utilizados em média 80 litros de água para cada quilograma de substrato tratado. Este estudo visou aprimorar o processo de pré-alvejamento para tecidos têxteis utilizando o ozônio com o objetivo de reduzir o consumo de água, de aditivos químicos, de tempo e bem como de energia. O potencial de redução do ozônio (2,07 V) é maior que o potencial de redução do peróxido de hidrogênio (1,77 V), o que faz com que o ozônio seja um excelente agente oxidante. A avaliação dos resultados de resistência física (estouro e tração), propriedades tintoriais (K/S, FC % e DE) e do grau de branco do tecido, indicam que o processo de pré-alvejamento com ozônio a frio é promissor na indústria têxtil, pois além de eliminar a utilização de peróxido de hidrogênio e hidróxido de sódio, reduz o tempo de processo em 60% e diminui o consumo de água em 50%.Palavras-chave: Materiais têxteis. Algodão. Poliéster. Pré-alvejamento. Ozônio. ABSTRACTThe innovation of the processes of the textile materials is becoming more and more important to reduce the amount of water and the use of machinery time in the textile industry. The consumption of textile fibers in Brazil in 2014 was 13,3 kilograms per capita and to produce these fabrics with 80 liters of water on average are used to each kilo of treated substract. This study aims to improve the pre-bleaching process for textile fabrics using the ozone with the objective to reduce the consumption of water, chemical products, time as well as energy. The potential for reducing ozone (2.07 V) is greater than the reduction potential of hydrogen peroxide (1.77 V), which makes the ozone is an excellent oxidising agent. The evaluation of results in resistance (strength and traction), dyeing properties (K/S, FC % and DE) and the whiteness degree of prebleached fabrics using cold ozone indicates that this is a promising process for the textile industry, since it not only eliminates the use of hydrogen peroxide and sodium hydroxide but also allows eliminating the process in at least 60% also reducing water consumption in 50%.

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“…Örneğin, Prabaharan ve Rao (2003) ozonu ham pamuklu dokumanın ağartılmasında kullanmış ve kumaşın nem miktarının ve pH düzeyinin çok önemli olduğunu bildirmiştir [5]. Başka bir çalışmada ise pamuklu kumaşların ağartılmasında ozon gazının yüksek oksitleme kapasitesinden yararlanarak ağartma çalışmaları yapılmış ve çok kısa bir sürede pamuklu kumaşların ağartılabileceği, aynı zamanda ozonlama etkisinin oda sıcaklıklarında daha etkili olabileceğini bildirilmiştir [6]. İnkaya vd.…”

Section: Introductionunclassified

Pamuklu Kumaşların Ozon-Hidrojen Peroksit Kombinasyonu ile Ağartılması ve Doğal Boyalar ile Renklendirilmesi

Benli¹,

Bahtiyari²

2016

Tekstil ve Mühendis

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An Investigation in the Use of Ozone Gas in the Bleaching of Cotton Fabrics

Cited by 68 publications

References 10 publications

Comparison of Various Additives in Cotton Bleaching Efficiency

Comparison of Various Additives in Cotton Bleaching Efficiency

Pre-alvejamento de materiais têxteis com ozônio e avaliação de suas propriedades de superfície, físicas e tintoriais

Pamuklu Kumaşların Ozon-Hidrojen Peroksit Kombinasyonu ile Ağartılması ve Doğal Boyalar ile Renklendirilmesi

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