阳离子淀粉在纤维素纳米纤维存在下对苏打蔗渣浆造纸的结构、光学和强度性能的影响。
Effects of cationic starch in the presence of cellulose nanofibrils on structural, optical and strength properties of paper from soda bagasse pulp.
机构信息
Department of Cellulose and Paper Technology, New Technologies Engineering Faculty, Shahid Beheshti University, Tehran, Iran.
Department of Cellulose and Paper Technology, New Technologies Engineering Faculty, Shahid Beheshti University, Tehran, Iran.
出版信息
Carbohydr Polym. 2018 Aug 15;194:1-8. doi: 10.1016/j.carbpol.2018.04.026. Epub 2018 Apr 7.
The effects of widely available bio-based additives, cellulose nanofibrils (CNFs) (0.1, 0.5, 1, and 2 wt%, based on dry weight of pulp) in combination with high degree of substitution cationic starch (CS) (0.2, 0.4, and 0.6 wt%, based on dry weight of pulp) on the structural, optical and strength properties of handsheet paper made from soda bagasse pulp were studied. Obtained results indicated that both the type and loading level of the additives had meaningful effects (99% confidence level) on the evaluated properties. Scanning electron microscope (SEM) images showed the retention and reinforcing effects of the additives on the paper network. Tensile and burst strengths increased continuously with increasing levels of the bio-additives up to 33% and 23% (0.6 CS/2% CNFs), respectively. However, the cellulose nanofibrils improved retention and drainage of the pulp at the lower levels (0.5 CS/0.1 CNFs), presumably due to complex interaction between CNFs and CS. Moreover, for the handsheet papers made of semi-bleached soda bagasse pulp, higher addition of CNFs improved the brightness of paper.
研究了在高取代度阳离子淀粉（CS）（基于纸浆干重，0.2%、0.4%和 0.6%）与纤维素纳米纤维（CNF）（基于纸浆干重，0.1%、0.5%、1%和 2%）的协同作用下，广泛可用的生物基添加剂对苏打浆手抄片的结构、光学和强度性能的影响。结果表明，添加剂的类型和用量对评价性能有显著影响（置信水平为 99%）。扫描电子显微镜（SEM）图像显示了添加剂对纸张网络的保留和增强作用。拉伸强度和耐破度随着生物添加剂用量的增加而持续增加，分别增加了 33%和 23%（0.6 CS/2% CNFs）。然而，在较低水平下（0.5 CS/0.1 CNFs），纤维素纳米纤维提高了纸浆的保留率和排水性能，这可能是由于 CNFs 和 CS 之间的复杂相互作用。此外，对于半漂苏打浆手抄片，较高的 CNF 添加量提高了纸张的亮度。
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