摘要
从紫甘蓝中提取天然染料紫甘蓝色素对棉织物进行染色,制备pH值响应型织物。通过正交试验探究阳离子改性棉织物最优工艺参数,测定紫甘蓝色素的上染率和染色棉织物的色牢度。并针对提取的紫甘蓝色素及染色棉织物,开展不同pH值条件下的变色性能研究,同时探究pH响应型织物的变色耐久性。结果表明:阳离子改性棉织物的最优工艺参数为改性剂质量分数20%、改性处理温度40℃、改性处理时间60 min、改性液pH值10。改性后染色棉织物相较于直接染色棉织物,上染率提升了3.77倍及以上,耐洗色牢度和耐晒色牢度能达到3级,耐摩擦色牢度提升了1~3级。提取的紫甘蓝色素在pH值为1~14的宽范围内依次呈现粉红色到黄绿色的变化,显色反应灵敏。且最优工艺改性后染色棉织物在酸性条件下呈粉红色、在碱性条件下呈黄色,经7次酸碱处理后织物颜色趋于稳定,pH值响应耐久性较好。
The natural dye,purple cabbage blue pigment,extracted from purple cabbage was used to dye cotton fabrics,thereby preparing pH-responsive fabrics.The optimal process parameters for cation modified cotton fabric were explored through orthogonal experiments,and the dyeing rate of purple cabbage blue pigment and the color fastness of dyed cotton fabrics were determined.In addition,for the extracted purple cabbage blue pigment and the dyed cotton fabrics,the color-changing performance under different pH conditions was investigated,and the color durability of pH-responsive fabrics was also explored.The results showed that the optimal process parameters for cation modified cotton fabrics were the mass fraction of the cation modification agent at 20%,the modification treatment temperature at 40℃,the modification treatment time at 60 min,and the pH value of the modification solution at 10.After being modified by the optimal process,the dyed cotton fabric had The dyeing rate of the modified dyed cotton fabric was 3.77 times or more than that of the directly dyed cotton fabric.The color fastness to wash and to light could reach grade 3,and the color fastness to rubbing increased by 1~3 grades.The extracted purple cabbage blue pigment exhibited a color change from pink to yellow-green within a pH range of 1 to 14,demonstrating sensitive color reaction.After optimal process modification,the dyed cotton fabric appeared pink under acidic conditions and yellow under alkaline conditions.After 7 cycles of acid or alkali treatments,the color of the fabric became stable,and the pH value response durability was good.
作者
朱文斌
姜文哲
马泽敏
王志新
许福军
俞建勇
Zhu Wenbin;Jiang Wenzhe;Ma Zemin;Wang Zhixin;Xu Fujun;Yu Jianyong(College of Textiles,Donghua University,Shanghai 201620,China;Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China)
出处
《产业用纺织品》
2025年第7期30-38,共9页
Technical Textiles
关键词
天然染料
紫甘蓝色素
阳离子改性
棉织物
染色
pH值响应性
耐久性
natural dye
purple cabbage blue pigment
cation modification
cotton fabric
dye
pH value responsiveness
durability
