利用槟榔叶开发增强纸和缓解原料供应的挑战

Kishan Jaishwal, Izhar Alam, C. Sharma
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摘要

造纸业正面临原材料危机,正在寻找可能有助于缓解这一问题的替代原材料。许多工业使用农业废物作为原料,尽管它具有低漂白性和较差的机械强度。槟榔叶(ANL)是一种非木基材料,可以作为一种替代原料来源,它含有61.5%的纤维素和13.6%的木质素,与其他农业废弃物和硬木纸浆相当。活性碱为氧化钠(Na2O)的20%、磺化度为25%、蒽醌含量为0.05%的硫酸盐蒽醌制浆可制得15 kappa的纸浆,制浆率约为38.5%。采用D0(EOP)D1漂白顺序,ANL浆的漂白性能良好,ISO亮度可达83.5%。ANL纤维的拉伸性能比硬木纤维高33.8%,撕裂性能比硬木纤维高54.5%,破裂指数比硬木纤维高15.2%。与麦秸相比,ANL的拉伸性能提高了60.4%,撕裂性能提高了56.5%,破裂指数提高了21.7%。因此,研究表明槟榔叶可以作为一种替代造纸原料,并通过与劣质纸浆混合来改善纸制品的物理性能。
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Development of reinforced paper and mitigation of the challenges of raw material availability by utilizing Areca nut leaf
Paper industries are facing a raw material crisis and searching for alternate raw materials that may be able to help mitigate the issue. Many industries use agro-waste as a raw material, irrespective of it having low bleachability and poor mechanical strength. Areca nut leaf (ANL) is a nonwood-based material that may be acceptable as an alternate source of raw material that contains 61.5% holocellulose and 13.6% lignin, which is comparable to other agro-wastes and hardwood pulps. Kraft anthraquinone pulping with 20% active alkali as sodium oxide (Na2O), 25% sulfidity, and 0.05% anthraquinone produced 15 kappa pulps with about 38.5% pulping yield. The bleachability of ANL pulp was good, and 83.5% ISO brightness could be achieved using the D0(EOP)D1 bleaching sequence. The ANL fiber has 33.8% better tensile, 54.5% better tear, and 15.2% better burst index than hardwood fiber. Similarly, 60.4% better tensile, 56.5% better tear, and 21.7% better burst index were observed in ANL than in wheat straw. Thus, the study revealed that Areca nut leaf can be used as an alternative raw material for papermaking, as well as to improve the physical property of paper products by blending it with inferior quality pulp.
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