Morphological and chemical components of Ulmus glabrar, Ulmus compestris, Zelkova carpinifolia, Celtis australis

Safdari, Vahid

doi:10.22092/ijwpr.2010.117312

Document Type : Research Paper

Author

Vahid Safdari

Ph.D., Dept. of Wood and Paper Science & Technology, Islamic Azad University- Kraj branch – Iran

https://doi.org/10.22092/ijwpr.2010.117312

Abstract

The suitability of wood and noon-wood species for using in pulp and paper industry can be predicted by their morphological and chemical characteristics. In these research morphological and chemical properties of four spices of Ulmacea family, Ulmus glabrar, Ulmus compestris, Zelkova carpinifolia and Celtis australis have been compared. From each species three cross section, 5 cm thickness has been selected. Wood slivers of tree zones: near to pith, middle part and near to bark wood have been macerated in mixture of acetic acid and hydrogen peroxide at 60°C for 48 hours. Biometric coefficients of fibers in three zone and four species have been measured and analyzed by factorial, complete randomized block design. Result showed that, Zelkova carpinifolia has least lignin, ash and extractives and highest cellulose. The fibers of, Zelkova carpinifoliahas has highest Slenderness ratio, Runkel ratio and hence in Ulmacea family is most suitable species for paper industry. Fiber length, wall thickness in near to bark zone in comparison to near to pith was higher significantly. Therefore it is predicted that the mechanical properties of pulp of this three zones are different

Keywords

Main Subjects

Physics and anatomy

References

Celtis australis

Zelkova carpinifolia

Ulmus glabra

Ulmus compestris

Ulmus glabra

شکل7: در سلولهای اشعه چوبی داغداغان بلور (کریستال) فراوان مشاهده میشود. خط مقیاس معرف 50 میکرومتر است.

Zelkova carpinifolia

Ulmus compestris

Ulmus glabra

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Iranian Journal of Wood and Paper Science Research

Morphological and chemical components of Ulmus glabrar, Ulmus compestris, Zelkova carpinifolia, Celtis australis

References

References

Volume 25, Issue 2 - Serial Number 33
September 2018
Pages 248-259

Morphological and chemical components of Ulmus glabrar, Ulmus compestris, Zelkova carpinifolia, Celtis australis

References

References

Volume 25, Issue 2 - Serial Number 33September 2018Pages 248-259

Volume 25, Issue 2 - Serial Number 33
September 2018
Pages 248-259