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首页> 外文期刊>Ultrasonics sonochemistry >Ecofriendly laccaseChydrogen peroxide/ultrasound-assisted bleaching of linen fabrics and its influence on dyeing efficiency
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Ecofriendly laccaseChydrogen peroxide/ultrasound-assisted bleaching of linen fabrics and its influence on dyeing efficiency

机译：亚麻织物的生态友好型漆酶过氧化氢/超声波辅助漂白及其对染色效率的影响

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摘要

This study evaluates the bleaching efficiency of enzymatically scoured linen fabrics using a combined laccaseC hydrogen peroxide bleaching process with and without ultrasonic energy, with the goal of obtaining fabrics with high whiteness levels, well preserved tensile strength and higher dye uptake. The effect of the laccase enzyme and the combined laccaseChydrogen peroxide bleaching process with and without ultrasound has been investigated with regard to whiteness value, tensile strength, dyeing efficiency and dyeing kinetics using both reactive and cationic dyes. The bleached linen fabrics were characterized using X-ray diffraction and by measuring tensile strength and lightness. The dyeing efficiency and kinetics were characterized by measuring dye uptake and colour fastness. The results indicated that ultrasound was an effective technique in the combined laccaseChydrogen peroxide bleaching process of linen fabrics. The whiteness values expressed as lightness of linen fabrics is enhanced by using ultrasonic energy. The measured colour strength values were found to be slightly better for combined laccaseC hydrogen peroxide/ultrasound-assisted bleached fabrics than for combined laccaseChydrogen peroxide for both reactive and cationic dyes. The fastness properties of the fabrics dyed with reactive dye were better than those obtained when using cationic dye. The time/dye uptake isotherms were also enhanced when using combined laccaseChydrogen peroxide/ultrasound-assisted bleached fabric, which confirms the efficiency of ultrasound in the combined oxidative bleaching process. The dyeing rate constant, half-time of dyeing and dyeing efficiency have been calculated and discussed.
机译：这项研究评估了使用酶和不使用超声能量的联合laccaseC过氧化氢漂白工艺对酶促洗涤亚麻织物的漂白效率，目的是获得具有高白度，良好保存的拉伸强度和较高染料吸收率的织物。研究了使用和不使用超声波的漆酶和联合使用的漆酶/过氧化氢的过氧化氢漂白工艺对使用活性和阳离子染料的白度值，拉伸强度，染色效率和染色动力学的影响。使用X射线衍射并通过测量拉伸强度和亮度来表征漂白的亚麻织物。通过测量染料吸收率和色牢度来表征染色效率和动力学。结果表明，超声波是亚麻织物过氧化酶/过氧化氢联合漂白工艺中的有效技术。通过使用超声波能量可以提高表示为亚麻织物的亮度的白度值。发现对于活性染料和阳离子染料，结合的漆酶C过氧化氢/超声辅助的漂白织物测得的色强度值稍好于结合的漆酶C过氧化氢的织物。用活性染料染色的织物的牢度性能优于使用阳离子染料时所获得的织物。当使用漆酶/过氧化氢/超声辅助漂白织物的组合时，时间/染料吸收等温线也得到了增强，这证实了超声在组合氧化漂白过程中的效率。计算并讨论了染色速率常数，染色半衰期和染色效率。

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