核桃青皮醇提取物对棉织物染色性能的研究

Study on Dyeing Properties of Ethanol Extract of Green Walnut Husk on Cotton Fabric

为解决天然染料核桃青皮染色色调单一的问题,以颜色特征值和染色牢度为指标,通过单因素和正交实验优化了影响染色效果的温度、时间、p H值及核桃青皮色素染液的质量浓度等条件,比较了单金属盐的不同媒染方法、复合金属盐复配的不同配方对纯棉织物染色性能的影响。结果表明:核桃青皮色素染色的优化条件为温度90℃、质量浓度71.40 g/L、染浴p H=4.0、时间140 min。核桃青皮提取液染色棉织物色谱范围广,染色深度(k/s值)分布范围从2.55到16.09,耐摩擦牢度均在4级以上;单金属盐媒染的耐皂洗牢度后媒>预媒>同浴>直接染色,复合金属盐复配及Fe3+、Fe2+、Cu2+、Al3+、Cr6+等单金属盐媒染的耐皂洗色牢度均能达到3级以上。X-射线衍射及紫外透过率测试结果表明:棉织物内部结构未受影响,Fe3+、Fe2+、Cr6+、Sr2+、Na+和K+等单金属盐和Fe2+/Cu2+、Fe2+/Ti4+、Cu2+/Ti4+、Cu2+/Sn2+、Al3+/Cr6+、Cr6+/Ti4+和Cr6+/Sn2+等复合金属盐媒染后的棉织物紫外线防护能力增强。

To solve the single color problem on cotton fabric by green walnut husk pigment extract,the influences of dyeing temperature,dyeing time,p H value of dye solution and dye mass concentration on dyeing process of cotton fabric were optimized on the basis of color characterization value and color fastness as total index by single factor design and orthogonal experiments. Furthermore,the mordant dyeing methods of single metal salt and metal- complex salt were carried out to investigate their influence on the dyeing performance of cotton fabric. The results showed that the optimal extraction conditions as follows： dyeing temperature 90 ℃,p H value of dye solution 4. 0,dye mass concentration71. 40 g / L,and dyeing time 140 min. Dyed cotton fabric showed a wide spectrum range with k / s was from 2. 55 to 16. 09 and rubbing fastness reached more than level 4. Washing fastness of cotton fabric by single metal salt mordant dyeing demonstrated a downtrend in the order of after mordant dyeing,premordant dyeing,meta-mordant dyeing and direct dyeing. Washing fastness and color fastness of cotton fabric reached more than level 3 by metal-complex salt and single metal salt mordant such as Fe3 ＋,Fe2 ＋,Cu2 ＋,Al3 ＋,Cr6 ＋,etc. X-ray diffraction analysis showed that the internal structure of cotton fiber was not affected,In addition,the findings also indicated that the anti-ultraviolet property of dyed cotton fabric was enhanced distinctly by single metal salt mordant such as Fe3 ＋,Fe2 ＋,Cr6 ＋,Sr2 ＋,Na＋,K＋,etc and metal-complex salt mordant of Fe2 ＋/ Cu2 ＋,Fe2 ＋/ Ti4 ＋,Cu2 ＋/ Ti4 ＋,Cu2 ＋/ Sn2 ＋,Al3 ＋/ Cr6 ＋,Cr6 ＋/ Ti4 ＋and Cr6 ＋/ Sn2 ＋and so on.