Impregnation and Exhaustion Bleaching of Cotton with Peracetic Acid
Impregnation and Exhaustion Bleaching of Cotton with Peracetic Acid
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DOI：
10.1177/0040517509104542
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发表时间：
2010-01-01
影响因子：
2.3
通讯作者：
Tavcer, Petra Forte
中科院分区：
文献类型：
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作者：
Tavcer, Petra Forte
用平衡过氧乙酸对棉织物进行了穷尽漂白、冷轧堆漂白、热轧堆漂白和轧蒸漂白。在60摄氏度和pH 7.5的条件下，用不同浓度的PASAN S15(由斯洛文尼亚Belinka生产的过氧乙酸)进行穷尽漂白40分钟。采用Pad-Batch工艺，在室温或60℃下存放不同时间。浸渍工艺采用15和60ml/L的两个漂白浴。还进行了压片-蒸汽漂白；样品在用漂白液压片后立即蒸煮或在冷热储存后蒸煮。测量了随着储存时间的延长而达到的白度。通过测试织物的聚合度和断裂强力，评价了不同漂白条件对棉织物损伤的影响。结果表明，所获得的白度值取决于漂白剂的浓度、温度和处理时间。棉织物过氧乙酸法脱色和低浓度漂液轧堆漂白是一种非常方便的漂白工艺。事实证明，垫-蒸汽工艺并不合适。但纤维的聚合度表明，高浓度的漂白剂会对织物造成损伤。
Cotton fabric was bleached with equilibrium peracetic acid in an exhaustion process and in cold pad-batch, hot pad-batch, and pad-steam bleaching processes. Exhaustion bleaching proceeded for 40 minutes at 60 degrees C and pH 7.5 with different concentrations of Persan S15 (peracetic acid produced by Belinka, Slovenia). Pad-batch processes were conducted with storage for different times at room temperature or at 60 degrees C. Two bleaching baths with 15 and 60 ml/l of Persan S15 were used for the impregnation processes. Pad-steam bleaching was also performed; the samples were steamed immediately after padding with bleaching solution or after cold/hot storage. The degree of whiteness achieved with elongation of storage time was measured. The influence of different bleaching conditions on damage to the cotton fabrics was evaluated by measurements of the degree of polymerization and the breaking strength of the fabrics. It was established that the achieved whiteness values depend on the concentration of the bleaching agent, temperature, and time of treatment. The exhaustion bleaching and both types of pad-batch bleaching with low concentration bleaching solution are very convenient processes for bleaching of cotton fabric with peracetic acid. The pad-steam process did not prove appropriate. The breaking strength of the fabric did not deteriorate remarkably with any of the processes, but the degree of polymerization of the fibers revealed that damage occurred at high concentrations of bleaching agent.