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首页> 外文期刊>Research journal of forestry >Evaluation of Paper Pulp and Paper Making Characteristics Produced from Different African Woody Trees Grown in Egypt
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Evaluation of Paper Pulp and Paper Making Characteristics Produced from Different African Woody Trees Grown in Egypt

机译：埃及种植的非洲不同木本植物的纸浆和造纸特性评估

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Background: There is a global need to search for new types of fibers’s wood to assess its suitability for the paper production as a result of the population increase in the world. Objective: Therefore, this trial was conducted to evaluate paper pulp produced and determination of the papermaking characteristics from woods of Populus alba, Eucalyptus camaldulensis, Acacia nilotica as hardwoods and Cupressus sempervirens as a softwood. Materials and Methods: for producing fibrous raw materials which can be converted into paper. Pulp production of different wood samples, pulp yield, bleaching process and beating process were measured. In addition, physical methods (fiber length and crystallinity index) and properties (tensile index, breaking length, bursting index, tear index and brightness) of the paper sheet were determined. The data were then analyzed using using Duncan Multiple Range Test (DMRT) at 5%. Results: The results indicated that Acacia nilotica wood produced the significant superior value in net pulp yield. Also, pulp produced from Eucalyptus camaldulensis pronounced more changes in lignin which greatly decreased, in addition, alfa cellulose raised up to the maximum value during pulping processing followed by Populus alba. Chrystallinity index tended to the maximum value in Populus alba. In addition, bleached pulp of Populus alba was significantly in alfa cellulose and the maximum value in pentosan. Regarding fiber length, the results demonstrated that Cupressus sempervirens recorded the longest fiber length. Also, the study declared that Populus alba recorded the highest increases values in breaking length. In this respect papers produced from wood of Populus alba had the highest quality in burst index conversely. As regards tear index of papers, it is clear that paper induced from soft wood species Cupressus sempervirens was better and over grade than all the other species. Conclusion: In this regard brightness of papers manufactured from both Populus alba and Eucalyptus camaldulensis were much better in quality. Therefore, it is possible to use Populus alba for producing papers high quality instead of importation from the abroad.
机译：背景：由于世界人口的增长，全球范围内需要寻找新型纤维木材以评估其对造纸的适用性。目的：因此，该试验旨在评估白杨，桉树，阿拉伯金合欢作为阔叶树和轻生柏树的木材生产的纸浆，并确定其造纸特性。材料和方法：用于生产可转化为纸的纤维原料。测量了不同木材样品的纸浆产量，纸浆产量，漂白过程和打浆过程。另外，确定了纸张的物理方法（纤维长度和结晶度指数）和性质（拉伸指数，断裂长度，破裂指数，撕裂指数和亮度）。然后使用5％的邓肯多范围测试（DMRT）分析数据。结果：结果表明，相思木在净纸浆产量方面具有明显的优越价值。而且，由卡姆桉属桉树生产的纸浆在木质素中的变化更大，这大大降低了，此外，制浆过程中阿尔法纤维素提高到最大值，随后是白杨。白杨的结晶度指数趋于最大值。此外，白杨的漂白浆在α纤维素中含量显着，在戊聚糖中含量最高。关于纤维长度，结果表明，柏（Cupressus sempervirens）记录了最长的纤维长度。此外，该研究还宣布，白杨（Populus alba）记录了断裂长度的最高增加值。在这方面，相反，用白杨木制成的纸的破裂指数最高。关于纸张的撕裂指数，很明显，由软木柏树（Cupressus sempervirens）诱导的纸张比其他所有树种都更好，且等级更高。结论：就此而言，由白杨和桉树制得的纸张的亮度质量要好得多。因此，有可能使用白杨来生产高质量的纸张，而不是从国外进口。

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