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壳聚糖/棉混纺纱前处理及染色性能

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壳聚糖/棉混纺纱具有优异的抗菌性,但在染色过程中壳聚糖会大量损失,影响其服用性能.采用正交试验法讨论了氢氧化钠用量、温度、时间、过氧化氢用量对壳聚糖/棉混纺纱壳聚糖含量、纱线断裂强力、白度、毛细效应的影响,探究了直接染料、活性染料对壳聚糖/棉混纺纱壳聚糖含量、色牢度的影响.最佳前处理方案为:处理温度80℃,保温时间50 min,氢氧化钠质量浓度1.5 g/L,过氧化氢质量浓度4 g/L.此时混纺纱线中壳聚糖含量为17.36%,纱线断裂强力为218.83 cN,白度为64.9%,毛细效应为16.2 cm.活性染料适合染浅色织物,染中深色(>0.5%omf)织物时壳聚糖含量降低明显.直接染料适合染中深色织物,染色时壳聚糖含量符合要求,固色后色牢度符合染色要求.
Pretreatment and dyeing properties of chitosan/cotton blended fiber
Chitosan/cotton blended yarn is an excellent environmentally friendly antibacterial material,but there is a significant loss of chitosan during the dyeing process,affecting its wearability.The effects of sodium hydroxide dosage,temperature,time and hydrogen peroxide dosage on the chitosan content,yam breaking strength,whiteness and capillary effect of chitosan/cotton blended yarn are discussed by orthogonal experimental method,as well as the effect of chitosan/cotton blended yarn dyeing with direct and reactive dyes on the chitosan content and color fastness.The optimum pre-treatment process is determined as pretreating at 80 ℃ for 50 min with 1.5 g/L sodium hydroxide and 4 g/L hydrogen peroxide.After pretreatment,the chitosan content in the blended yarn is 17.36%,the yarn breaking strength is 218.83 cN,the whiteness is 64.9%,and the capillary effect is 16.2 cm.Reactive dyes are suitable for dyeing in light color,when dyeing in medium to dark colors(>0.5 omf),chitosan content decreases significantly.Direct dyes are suitable for dyeing in medium to dark color,and chitosan content and color fastness after fixation meet the quality requirements.

chitosanblended yarnpretreatmentcottondyeing propertycolor fastness

张子超、张京彬、薛孟芳、刘淑云、王翊、武飞、宁慧

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国家先进印染技术创新中心,山东泰安 271000

山东中康国创先进印染技术研究院有限公司,山东泰安 271000

壳聚糖 混纺纱 前处理 染色性能 色牢度

山东省重点研发计划资助

2022ZDPT02

2024

上海纺织科技
上海市纺织科学研究院

上海纺织科技

CSTPCD
影响因子:0.476
ISSN:1001-2044
年,卷(期):2024.52(6)