核桃青皮醇提物对棉织物染色性能的研究

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、pH值及核桃青皮色素染液的质量浓度等因素，比较了单金属盐的不同媒染方法和双金属盐复配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90oC、质量浓度71.40 g/L、染浴pH=4.0、时间140 min。核桃青皮提取液染色棉织物色谱的范围广，耐摩擦牢度好；耐皂洗牢度上单金属盐媒染是后媒＞前媒＞同浴＞直接染色，双金属盐复配及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-射线衍射分析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+等双金属盐媒染后的棉织物紫外线防护能力增强。

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

To solve the single color problem on cotton fabric by Green Walnut Husk pigment extract, the dyeing process on index of color features and color fastness were optimized combining with single factor design and orthogonal experiment, and four selected factors were mass concentration, pH, dyeing time and temperature. Further more, the influence of the dyeing performance of cotton fabric were compared by the mordant dyeing methods of single metal salt and the double metal salts complex pair. The results showed that the optimal extraction conditions as follows: dyeing temperature 90oC, pH value 4.0, mass concentration 71.40 g/L, dyeing time 140 min. For dyed cotton fabric, a wide spectrum range and excellent friction fastness was observed. As for soaping fastness, single metal salt mordant dyeing of cotton fabric was post-mordanting  pre-mordanting  meta-mordanting  direct dyeing. And the color fastness of double metal-complex salt and single metal salt mordant of Fe3+, Fe2+, Cu2+, Al3+, Cr6+ reached more than level 3. X-ray diffraction analysis showed that the internal structure of cotton fiber was not affected, In addition, the findings indicated that the anti-ultraviolet property of dyed cotton fabric enhenced distinctly by single metal salt mordant of Fe3+, Fe2+, Cr6+, Sr2+, Na+, K+ and double metal-complex salt mordant of Fe2+/Cu2+, Fe2+/Ti4+, Cu2+/Ti4+, Cu2+/Sn2+, Al3+/Cr6+, Cr6+/Ti4+ and Cr6+/Sn2+.