Hosseinnezhad Mozhgan, Gharanjig Kamaladin, Razani Narjes, Jafari Razieh, Saeb Mohammad Reza
Department of Organic Colorants, Institute for Color Science and Technology, P.O. Box 16656118481, Tehran, Iran.
Center of Excellence for Color Science and Technology, Institute for Color Science and Technology, P.O. Box 16656118481, Tehran, Iran.
Environ Sci Pollut Res Int. 2022 Jul;29(33):50608-50616. doi: 10.1007/s11356-022-19389-3. Epub 2022 Mar 2.
To reduce environmental pollution, it is essential to use green processes in dyeing and meet its requirements. Most natural dyes have a low affinity to be used in the dyeing process. To refine this limitation, the mordanting flow is necessary for many dyeing cases. Pumpkin extract as a natural, metal-rich source can be used as a bio-mordant in green dyeing of natural yarns such as wool. Two natural dyes native to Iran, Reseda luteola and madder, were employed in this study. The effectiveness of bio-mordant presence on yarns was evaluated by FTIR-ATR test from mordanted and mordanted-dyed wool samples. The study of K/S (color strength) content of dyed samples showed that increasing the dye concentration increases the amount of K/S. Fastness performance of wool dyed with pumpkin alternated from good to excellent depending on natural dye type and concentration, due to the formation of complex structures.
为减少环境污染，在染色过程中使用绿色工艺并满足其要求至关重要。大多数天然染料在染色过程中的亲和力较低。为改善这一局限性，许多染色情况都需要媒染流程。南瓜提取物作为一种天然的、富含金属的来源，可作为天然纱线（如羊毛）绿色染色中的生物媒染剂。本研究采用了伊朗本土的两种天然染料，即淡黄木犀草和茜草。通过对媒染和媒染染色羊毛样品进行傅里叶变换红外光谱衰减全反射（FTIR-ATR）测试，评估了生物媒染剂在纱线上的效果。对染色样品的K/S（色强度）含量研究表明，增加染料浓度会增加K/S的量。由于形成了复杂结构，用南瓜媒染的羊毛的色牢度性能根据天然染料类型和浓度的不同，从良好到优异不等。
