Extraction of Natural Dye from Walnut Bark and its Dyeing Properties on Wool Yarn

Abstract

The present study was undertaken to extract natural colorant from walnut bark and to explore its dyeing potential on wool fiber. The effect of potassium aluminum sulfate mordant concentration on dyeability, color characteristics, and fastness properties has been studied using CIEL*a*b* system. Twenty-seven shades were developed for their color characterizations and fastness properties using pre-mordanting technique. The results from the dyeing showed that potassium aluminum sulfate mordanted as well as unmordanted dyed samples exhibit satisfactory color and fastness properties.

摘要

本研究的目的是从核桃树皮提取天然色素并考察其对羊毛纤维的染色潜力。硫酸铝钾媒染剂浓度对染色性、颜色特性和色牢度的效果使用 CIEL*a*b* 系统进行评估。在研究中，使用预媒染技术针对颜色特性和色牢度性能设置了二十七个色调。染色结果表明，硫酸铝钾媒染以及未媒染的试样表现出令人满意的颜色和色牢度性能。

KEYWORDS:

• Natural dyes
• walnut bark
• mordant
• color characteristics
• fastness properties

关键词:

• 天然染料
• 核桃树皮
• 媒染剂
• 颜色特性
• 色牢性能