Dyeing of Cationized Cotton with Natural Colorant from Purple Corncob

ABSTRACT

In this investigation, dyeing of cotton fabric with natural dye extracted from purple corncob was attempted by means of pretreatment with a cationic agent, 3-chloro-2-hydroxypropyltrimenthylammonium chloride (CHTAC). Maximum color yield results were achieved when the fabric was pretreated with CHTAC at a concentration of 125 g/L, followed by dyeing at 100°C for 30 min in a dye bath adjusted to pH 9. The influence of meta- and post-mordanting with AlK(SO₄)₂, CuSO₄, FeSO₄, and gallnut was subsequently explored. Compared with the unmordanted sample, post-mordanting enhanced K/S values and slightly improved light fastness, but both meta- and post-mordanting caused a reduction in wash fastness from an excellent to a fair level, with the exception of CuSO₄. Meanwhile, mordanting with gallnut increased the acid and alkaline perspiration fastness from a poor and fair to a good level.

摘要

在本次调查中，天然染料对棉织物的染色紫玉米芯中提取尝试通过预处理与阳离子化剂，氯化3-chloro-2-hydroxypropyltrimenthylammonium（CHTAC）。最大颜色效果达到时，织物在浓度125 g/L,CHTAC预处理后染色，在100°C30分钟在染浴的pH9值调整到。影响元和后媒染与AlK(SO₄)₂，CuSO₄,FeSO₄，和随后探讨五倍子。与未经媒染的样品相比，增强后媒染K/S值略有提高日晒牢度，但元和后媒染使耐洗牢度还原一个良好的公平的水平，与CuSO₄的例外。同时，增加物五倍子酸、碱汗渍牢度从穷人和良好水平公平。

KEYWORDS:

• Cationic agent
• cotton
• dyeing
• mordant
• natural dye
• purple corncob

关键词:

• 阳离子化剂
• 棉
• 染色
• 媒染剂
• 天然染料
• 紫玉米芯