紫花地丁植物染料对纯棉针织物的染色性能研究-《现代纺织技术》(2022年1期).docx

龙源版权所有 紫花地丁植物染料对纯棉针织物的染色性能研究作者：王霖安 张军 傅红平 余志成来源：《现代纺织技术》2022年第01期 摘 要：为了探讨紫花地丁提取物作为植物染料对改性纯棉针织物的染色性能，对染色方法和染色工艺参数（硫酸亚铁用量、染色pH值、温度和时间）进行优化，对染色牢度、抗紫外线性能和抗菌性能进行测试。结果表明，紫花地丁植物染料纯棉针织物染色以同浴媒染法为好，适宜的染色工艺为：天然染料紫花地丁20 g/L，硫酸亚铁用量2%（o.w.f），柠檬酸0.5 g/L，pH值为6，90℃染色50 min。染色织物耐皂洗和耐摩擦色牢度达到3级及以上，在棉织物上的日晒牢度优于大多数天然染料，可达到3级。经20次水洗后UPF值仍大于50。染色织物对大肠杆菌抗菌率77.03%，对金黄色葡萄球菌抗菌率73.88%。 关键词：紫花地丁;天然染料;染色;防紫外线;抗菌 中图分类号：TS193.6 文献标志码：A 文章编号：1009-265X（2022）01-0157-05 Abstract： In this study， the Chinese herb viola philippica extract was selected as a natural dye to treat the knitted cotton fabric. The dyeing properties of the modified knitted cotton fabric， the dyeing methods and dyeing process parameters （dosage of ferrous sulfate， pH value， dyeing temperature and dyeing time） were optimized. The color fastness， UV resistance and antibacterial property of the dyed fabric were evaluated. The results showed that the one-bath mordant dyeing method was the best for the dyeing of knitted cotton fabric by the natural dye viola philippica. The optimal dyeing process was determined as follows： viola philippica 20 g/L， ferrous sulfate 2%（o.w.f）， citric acid 0.5 g/L， a pH value of 6， 90℃ for 50 min. Under this condition， the color fastness to soap washing and friction of the dyed fabric reached level 3 or above. The color fastness to sunlight on cotton fabrics was better than most natural dyes and reached 3 level. The UPF value was still higher than 50 after 20 laundries. The antibacterial rates of the dyed fabric against Escherichia coli and Staphylococcus aureus were 77.03% and 73.88% respectively. Key words： Viola Philippica; natural dye; dyeing; UV resistance; antibacterial 隨着生活水平提高，健康纺织品越来越受到消费者的青睐。植物染料与环境相容性良好，具有较好的可降解性，色泽柔和，独具特色[1-2]。然而植物染料存在色谱不足、日晒牢度差等行业共性问题，因此亟待开发新的植物染料[3-5]。 紫花地丁（Viola philippic）为堇菜科（Violaceae）堇菜属植物，具有清热解毒、凉血消肿、清热利湿的作用，文献报道紫花地丁提取物具有抗炎、抗菌、抗HIV和免疫调节等作用，其主要成分包括香豆素类、黄酮类以及有机酸等[6-7]。紫花地丁提取物同时用于棉织物染色及抗菌、抗紫外线功能还未见研究报道。 大多数天然染料与棉织物直接性较低，因此先对棉织物进行阳离子改性，使之更容易与天然染料结合，其原理是赋予棉纤维正电性，