Laccase-mediated system pretreatment to enhance the effect of hydrogen peroxide bleaching of cotton fabric

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• 作者：Liqiang Tian^a ; ^b ; C. Branford-White^c ; Wen Wang^a ; Huali Nie^a ; ^d ; ^{niehuali@dhu.edu.cn} ; Limin Zhu^a ; ^{lzhu@dhu.edu.cn}
• 关键词：Laccase-mediated system ; Cotton fabric ; Bleaching ; Whiteness ; XRD
• 刊名：International Journal of Biological Macromolecules
• 出版年：2012
• 期刊代码：62_01418130
• 类别：abs
• 出版时间：1 April, 2012
• 卷：50
• 期：3
• 页码：782-787
• 文件大小：537 K

摘要

This study evaluates the bleaching efficiency of the hydrogen peroxide bleaching process combined with laccase-mediated system pretreatment (LMS-HPBP) in the treatment of scoured cotton fabric. By changing the factors of laccase-mediated system pretreatment and the hydrogen peroxide bleaching process and examining the subsequent whiteness value and retained tensile strength of the samples, we find three LMS-HPBP processes that are more environment friendly than the conventional hydrogen peroxide bleaching process (CHPBP): (i) bleaching with lower dosage of hydrogen peroxide; (ii) bleaching at reduced temperature; (iii) bleaching for shortened duration. Whiteness, retained tensile strength and K/S values of cotton fabric samples treated by i-iii processes were similar to or higher than those by CHPBP. X-ray diffraction (XRD) analysis also demonstrated that the three processes rendered fabric of both lower crystallinity and bigger crystallite size than those by CHPBP. In addition, the 鈥済reen鈥?short-flow process was developed to treat cotton fabric and the results obtained shows this method is feasible as a new energy-saving process.