水溶液沉淀后纸张的加速变黄

IF 4.3 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

ACS Omega Pub Date : 2025-09-17 DOI:10.1021/acsomega.5c01378

Sajjad Karimnejad, , , Nicolae Tomozeiu, , and , Anton A. Darhuber*,

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引用次数: 0

摘要

水性喷墨油墨通常含有5 - 50%的所谓共溶剂，这是一种非挥发性极性化合物，如甘油或乙二醇低聚物（ego）。我们发现，EGOs水溶液沉积后，印刷纸在阳光下变黄的速度明显加快。利用加速老化和荧光光谱的结合，我们确定了根本原因是在大气氧气和ego存在的情况下，紫外线诱导的增白剂降解率增加。这种荧光增白剂是办公用纸的标准添加剂。

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Accelerated Yellowing of Paper after Deposition of Aqueous Cosolvent Solutions

Water-based inkjet inks typically contain 5–50 wt % of so-called cosolvents, which are nonvolatile, polar compounds such as glycerol or ethylene glycol oligomers (EGOs). We found that the yellowing of printing paper in sunlight is notably accelerated after the deposition of aqueous solutions of EGOs. Using a combination of accelerated aging and fluorescence spectroscopy, we identified the root cause to be the increased rate of UV-induced degradation of whitening agents in the presence of atmospheric oxygen and EGOs. Such fluorescent brighteners are standard additives in office paper.

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来源期刊

ACS Omega Chemical Engineering-General Chemical Engineering

CiteScore

6.60

自引率

4.90%

发文量

3945

审稿时长

2.4 months

期刊介绍： ACS Omega is an open-access global publication for scientific articles that describe new findings in chemistry and interfacing areas of science, without any perceived evaluation of immediate impact.