Dyeing Properties of Natural Dyes Extracted from the Junipers Leaves (J. excelsa Bieb. and J. oxycedrus L.)

ABCTRACT

In this paper, two natural dyes were extracted from Junipers leaves (Juniperus oxycedrus L. and Juniperus excelsa Bieb.). Wool yarn (for carpet) was dyed with the extract using ferrous (II) sulfate, potassium dichromate and sodium sulfate as mordant. Then, CIELab (L*, a*, b*, c,* and h) values, color differences (ΔE) and color strength (K/S) values of dyed wool yarns were examined and the fastness properties of dyed wool against dry and wet rubbing were evaluated. According to the experimental results, the use of mordant increased the color strength of dye goods. All mordant increased the rub fastness of dyed samples such as similar scientific studies previously. Compared to two junipers, dyeing samples of J. excelsa are dyed darker than that of J. oxycedrus.

摘要

在本文所涉的研究中，从刺柏（大果刺柏和棕竹刺柏）叶子中提取两种天然染料。通过使用亚铁（Ⅱ）硫酸盐、重铬酸钾和硫酸钠作为媒染剂提取物对羊毛纱（地毯用）进行染色。然后，检测经过染色的羊毛纱的 CIELab（L *、 a *、b *、c *和 h）值、色差（ΔE）和颜色强度（K/S）值，并对染色羊毛的干摩擦和湿摩擦耐磨色牢度进行了评估。根据实验结果，媒染剂的使用提高了染料产品的色牢度。所有媒染剂都提高了染色样本的耐摩色牢度，这与以前的类似科学研究结果一致。具体到这两种刺柏，棕竹刺柏的样品染色深度高于大果刺柏。

KEYWORDS:

• Color properties
• junipers
• mordant
• natural dyeing
• quercetin
• rub fastness

关键词:

• 颜色性质
• 刺柏
• 媒染剂
• 天然染色
• 槲皮素
• 耐摩色牢度