Chemical and Anatomical Properties of Dendrocalamus giganteus Sheaths as Pulp Fiber
2017
Zhan, Hui | Niu, Zhao-Hui | Li, Mao-biao | Wang, Chang-ming | Wang, Shu-guang
Bamboo sheaths are typical, lignocellulosic, forest and agricultural residues in bamboo stands. This study investigated the potential for use of Dendrocalamus giganteus sheaths as the raw material for paper making, based on their morphological and chemical properties at various growth stages. Undifferentiated and differentiated vascular bundles of sheaths were studied, and phloem sheaths were found to have more fiber than protoxylem sheaths. The parenchymal cells adjoining the differentiated vascular bundles showed decomposition and formed air cavities. D. giganteus sheaths contained medium-sized fibers, and both the slenderness ratio and the Runkel ratio showed high suitability as pulp fiber. The chemical composition demonstrated moderate differences at various growth stages. Overall, D. giganteus sheaths had a low ash content and lignin and holocellulose contents that were comparable to those of traditional pulp fibers. Therefore, D. giganteus sheaths have a promising potential as pulp fiber.
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