Abstract

The primary aim of this study is to determine the effectiveness of separating ink particles which are adherent to cellulose fibers from cellulose fibers after recycling. In addition, after recycling, physical and optical changes in cellulose fibers are observed and inkjet and laserjet printing properties are investigated in some parameters. Initially, the reference papers are recycled according to the 11p standard. After this stage, the pulps are subjected to double stage bleaching (0.4% FAS + H₂O₂). Then, color scales are printed with inkjet and laserjet printers, and color measurements are made with X-Rite Exact spectrophotometer. These papers are again recycled according to the INGEDE 11p standard. As a result of the calculations, it is observed that there is an accurate ratio between the number of recyclings and the detachability of ink particles from cellulose fibers. In addition, it is determined that the resistance properties of the papers subjected to the second recycling stage are weakened and the porosity increased according to the obtained data. After the second recycling stage, it is determined that the cellulose peak values obtained in the FTIR spectrum became more pronounced and the results overlapped when compared with the ERIC values. In the SEM images, it can be said that after the second recycling stage, the fringing of the fibers increases with hornification and the fiber surface area began to expand.

摘要

本研究的主要目的是确定在回收后将粘附在纤维素纤维上的油墨颗粒与纤维素纤维分离的有效性。此外，在回收后，观察纤维素纤维的物理和光学变化，并在某些参数上研究喷墨和激光打印性能。最初，参考论文根据 11p 标准进行回收。在此阶段之后，纸浆经过双阶段漂白（0.4% FAS + H ₂ O ₂）。然后，使用喷墨和激光打印机打印色标，并使用 X-Rite Exact 分光光度计进行颜色测量。这些纸张再次按照 INGEDE 11p 标准进行回收。作为计算的结果，观察到回收次数与油墨颗粒从纤维素纤维的可分离性之间存在准确的比率。此外，根据获得的数据确定，经过第二次回收阶段的纸的电阻性能减弱，孔隙率增加。在第二个回收阶段之后，确定在 FTIR 光谱中获得的纤维素峰值变得更加明显，并且与 ERIC 值相比，结果重叠。在 SEM 图像中，可以说在第二次回收阶段之后，