Fortună Maria E, Ungureanu Elena, Jitareanu Carmen D
Institute of Macromolecular Chemistry "Petru Poni", 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania.
Exact Sciences Department, Faculty of Horticulture, "Ion Ionescu de la Brad" University of Life Sciences Iasi, 3 Mihail Sadoveanu Alley, 700490 Iasi, Romania.
Materials (Basel). 2021 Jun 16;14(12):3336. doi: 10.3390/ma14123336.
In the present work, precipitated calcium carbonate (PCC) and carboxymethyl chitosan (CMC) were prepared to obtain new hybrid materials used in papermaking. In the first step, occurred the precipitation of CaCO in solution containing CMC at different levels (0.5%, 1%, and 1.5%). In the second step, PCC-CMC hybrid material (25%) was added to pulp suspension, and the sheets were made. The effect of PCC-CMC on paper properties (mechanical and optical) was systematically investigated. Breaking length, the brightness and opacity of the sheets obtained with the PCC-CMC material were better than the sheets fabricated with the unmodified PCC at similar levels of content.
在本研究中，制备了沉淀碳酸钙（PCC）和羧甲基壳聚糖（CMC）以获得用于造纸的新型杂化材料。第一步，在含有不同含量（0.5%、1%和1.5%）CMC的溶液中发生碳酸钙沉淀。第二步，将25%的PCC-CMC杂化材料添加到纸浆悬浮液中并制成纸张。系统研究了PCC-CMC对纸张性能（机械性能和光学性能）的影响。在相似含量水平下，用PCC-CMC材料制得的纸张的抗张强度、亮度和不透明度均优于用未改性PCC制得的纸张。
