Abstract

In textile printing, hydrotropic components are usually added to print paste formulations promoting the hydration of textile fabrics by disrupting the hydrogen bonding network between water molecules. For this purpose, urea is commonly used but nevertheless, its presence causes water eutrophication and their reduction or replacement by more environmentally-friendly products is required. In the present work, we have studied an alternative hydrotropic product (polyethylene glycol, PEG) to replace urea. A factorial design of experiments has been carried out to identify the factors that optimize several variables of interest such as viscosity of the printing paste and fabric colour strength. The results showed that a reduction of 70 wt% of urea was achieved by using PEG 400, while preserving the performance of printing formulation. The viscosity of these eco-friendly printing paste formulations was similar to that of the original urea-based formulations and, more interestingly, fabrics showed similar colour strength and fastness to those of fabrics printed by the conventional method.

摘要

在纺织品印花中，水溶性组分通常被添加到印花浆配方中，通过破坏水分子之间的氢键网络来促进纺织品的水合作用。为此，通常使用尿素，但尽管如此，它的存在会导致水体富营养化，因此需要用更环保的产品减少或替代尿素。在目前的工作中，我们研究了替代尿素的替代水溶助长产品（聚乙二醇，PEG）。已经进行了试验的因子设计，以确定优化几个感兴趣的变量的因素，例如印花浆的粘度和织物颜色强度。结果表明，减少了 70 通过使用 PEG 400 实现了尿素的重量百分比，同时保持了印刷配方的性能。这些环保印花浆配方的粘度与原始尿素基配方的粘度相似，更有趣的是，织物显示出与通过常规方法印花的织物相似的色强度和牢度。