Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran.
Int J Biol Macromol. 2013 Jul;58:343-8. doi: 10.1016/j.ijbiomac.2013.04.056. Epub 2013 Apr 24.
The use of non-wood fibers in the paper industry has been an economical and environmental necessity. The application of dry-strength agents has been a successful method to enhance the strength properties of paper. The experimental results evidencing the potential of chitosan and cationic starch utilization in bagasse paper subjected to hot water pre-extraction has been presented in this paper. The research analyzes the surface properties alterations due to these dry-strength agents. Inverse gas chromatography was used to evaluate the properties of surface chemistry of the papers namely the surface energy, active sites, surface area as well as the acidic/basic character. The results of the study revealed that the handsheets process causes surface arrangement and orientation of chemical groups, which induce a more hydrophobic and basic surface. The acid-base surface characteristics after the addition of dry-strength agents were the same as the bagasse handsheets with and without hot water pre-extraction. The results showed that the dry-strength agent acts as a protecting film or glaze on the surfaces of bagasse paper handsheets.
在造纸工业中使用非木材纤维是一种经济和环境的必然需求。使用干强剂是提高纸张强度性能的一种成功方法。本文介绍了壳聚糖和阳离子淀粉在经过热水预处理的蔗渣纸中的应用潜力的实验结果。该研究分析了由于这些干强剂而导致的表面性质变化。反气相色谱法用于评估纸张的表面化学性质，即表面能、活性位、表面积以及酸碱性。研究结果表明，手抄片过程导致了化学基团的表面排列和取向，从而使表面更加疏水和碱性。添加干强剂后的酸碱表面特性与经过和未经热水预处理的蔗渣手抄片相同。结果表明，干强剂在蔗渣纸手抄片表面起到了保护膜或釉层的作用。
