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首页> 外文期刊>The Journal of Supercritical Fluids >Predicting diffusion behavior of disperse dyes in polyester fibers by a method based on extraction
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Predicting diffusion behavior of disperse dyes in polyester fibers by a method based on extraction

机译：基于提取方法预测分散染料分散染料的扩散行为

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摘要

The diffusive behavior of dye molecules in a polymer were typically observed during the impregnation of the dye in a polymer, and this method combines phenomena that occurs in both the fluid and polymer phases. However, the dissolution of the dye in a fluid can cause inadequate resistance in the overall mass transfer, leading to errors in observing the diffusion behavior. Thus, in this study, we proposed an extraction-based diffusion coefficient measurement method that fundamentally minimizes errors in the dissolution process. The new methodology based on extraction can be utilized more easily without the consideration of the dissolution step. Moreover, the diffusion coefficients of dyes in polyester fibers were consistent with those determined by the WLF model over a range of temperatures and pressures. The extraction-based methodology can be easily utilized to measure the solute diffusion behavior in a glassy polymer or systems with slow dissolution rates. (C) 2019 Elsevier B.V. All rights reserved.
机译：通常在聚合物中浸渍染料期间观察聚合物中染料分子的衍射行为，并且该方法结合了在流体和聚合物相中发生的现象。然而，染料在流体中的溶解会导致整体传质抗性不足，导致观察扩散行为的误差。因此，在本研究中，我们提出了一种基于提取的弥散系数测量方法，从而最大限度地最小化了溶解过程中的误差。可以更容易地利用基于萃取的新方法而不考虑溶解步骤。此外，聚酯纤维中的染料的扩散系数与通过WLF模型在一系列温度和压力中测定的那些。可以容易地利用基于提取的方法来测量具有缓慢溶解率的玻璃状聚合物或系统中的溶质扩散行为。 （c）2019年Elsevier B.V.保留所有权利。

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