In this work, a biologically active curcumin molecule is used as an antibacterial agent, and the insertion of this naturally occurring biomolecule into the backbone of water-dispersible polyurethane has been successfully achieved to synthesize bio-based antibacterial textile finishes. These curcumin-based water-dispersible polyurethane (CUR-WDPU) dispersions were prepared by utilizing isophorone diisocyanate (IPDI), polyethylene glycol (PEG), dimethylolpropionic acid (DMPA) and triethylamine (TEA) following the prepolymer mixing process by incorporating variable molar quantities of curcumin (CUR). Structure elucidation of synthesized CUR-WDPU dispersions was obtained through Fourier transformed infrared spectroscopy (FTIR) which confirmed the insertion of CUR into the WDPU backbone. Using the pad-dry-cure procedure, the varying varieties of plain weave polyester/cotton blended dyed and printed textile samples were treated with synthesized CUR-WDPU finishes. The antibacterial activities of these treated textiles have been assessed, and the outcomes revealed that the insertion of curcumin into the PU polymer chain has significantly boosted the antibacterial activities of PU dispersions. These newly prepared CUR-WDPUs dispersions are proved to be eco-friendly antimicrobial finishes because these are containing natural bioactive agents such as curcumin, showing potential antibacterial applications on polyester/cotton textiles. Predominantly, this research work is an attempt toward the greener approach of novel bio-based finishing materials preferably useful for textile diligences. Future investigations of these finishes will explore the other textile assets of poly-cotton textiles without adversely influencing their color fastness and mechanical properties.

在这项工作中，生物活性姜黄素分子被用作抗菌剂，并将这种天然存在的生物分子插入水分散性聚氨酯的骨架中，以合成生物基抗菌纺织品整理剂。这些基于姜黄素的水分散性聚氨酯 (CUR-WDPU) 分散体是通过使用异佛尔酮二异氰酸酯 (IPDI)、聚乙二醇 (PEG)、二羟甲基丙酸 (DMPA) 和三乙胺 (TEA) 在预聚物混合过程后通过加入可变摩尔量制备的姜黄素 (CUR)。通过傅里叶变换红外光谱 (FTIR) 获得合成的 CUR-WDPU 分散体的结构解析，这证实了 CUR 插入到 WDPU 主链中。使用垫干固化程序，用合成的 CUR-WDPU 整理剂处理各种平纹聚酯/棉混纺染色和印花纺织品样品。已经评估了这些处理过的纺织品的抗菌活性，结果表明姜黄素插入 PU 聚合物链显着提高了 PU 分散体的抗菌活性。这些新制备的 CUR-WDPUs 分散体被证明是环保的抗菌整理剂，因为它们含有天然生物活性剂，如姜黄素，在聚酯/棉纺织品上显示出潜在的抗菌应用。主要是，这项研究工作是对新型生物基整理材料的更环保方法的一种尝试，该方法尤其适用于纺织业。