Eco-Printing on Cotton Fabric with Natural Indigo Dye Using Wild Taro Corms as a New Thickening Agent

ABSTRACT

To solve ecological and toxicological issues related to some synthetic dyestuffs, the potential application of a new thickening agent from wild taro corms and natural indigo dye in the screen printing process of woven cotton and knitted fabrics was investigated in this study. For this purpose, effects of the dye, thickening agent, thiourea dioxide, and sodium hydroxide concentrations were varied and investigated with respect to the color yield, fastness, and physical properties. Results revealed that the printing paste comprising the thickening agent prepared from the modified starch of wild taro corms can be applied for the printing of cotton fabric using natural indigo dye. The colorfastness to washing, water, and perspiration of the printed samples was found to be good to very good, whereas the colorfastness to light and rubbing was mostly at good and fair, respectively. The printed fabric also had increased tensile strength, tear strength, bursting strength, and stiffness compared to the original fabric.

摘要

为解决某些合成染料的生态毒理问题, 研究了以野生芋头和天然靛蓝染料为原料的新型增稠剂在棉织物和针织物丝网印花工艺中的应用前景. 为此, 对染料, 增稠剂, 二氧化硫脲和氢氧化钠浓度的影响进行了改变, 并考察了它们对成色率, 牢度和物理性能的影响. 结果表明, 以野生芋头球茎变性淀粉为原料制备的增稠剂印花浆料, 可用于天然靛蓝染料印花棉织物. 印刷品的耐洗色牢度, 耐水色牢度和耐汗渍色牢度从好到非常好, 而耐光色牢度和耐摩擦色牢度分别为好和一般. 与原织物相比, 印花织物的拉伸强度, 撕裂强度, 爆裂强度和刚度均有所提高.

KEYWORDS:

• Printing
• natural indigo dye
• cotton
• thickening agent
• wild taro corms
• fabric

Keywords:

• 关键词
• 印刷
• 天然靛蓝染料
• 棉花
• 增稠剂
• 野生芋头球茎
• 织物

Acknowledgments

We would like to take this opportunity to thank Mr. Photsathon Ruenma, Mr. Nuttapong Boonkerd, and Miss Nutthamon Sangaphat for their help with collecting information and data to aid with the results and positive feedback received in the completed experiments. The authors gratefully acknowledge the help of Rajamangala University of Technology Phra Nakhon (RMUTP), Thailand, for supporting this research.