SOME PHYSICAL AND MECHANICAL PROPERTIES OF COCONUT PALM (COCOS NUCIFERA) STEM IN HAINAN ISLAND, CHINA

IF 0.9 4区农林科学 Q3 MATERIALS SCIENCE, PAPER & WOOD

Wood Research Pub Date : 2024-03-08 DOI:10.37763/wr.1336-4561/69.1.2336

Quanji Lu, Huichuan Jiang, Jianing Li, Min Li, Guanjun Li

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Abstract

The physical and mechanical properties of 40-year-old coconut stem were investigated in different radial directions and height positions. The results showed that in the radial direction, the properties of the number of vascular bundles (NVB), density, shrinkage, compressive strength parallel to the grain (CS), modulus of rupture (MOR), and modulus of elasticity (MOE) decreased continuously from the outer area to the inner area, except for the water absorption (WA) value which increased from the outer area to the inner area. The density and MOE decreased from the bottom to the top in the height direction while NVB and WA increased. The shrinkage, CS, and MOE first increased and then decreased from the bottom to the top. NVB in coconut stem affects the density and determines the main mechanical properties of CS, MOR, and MOE. The analysis of variance (two-way ANOVA) showed a significant difference in density, NVB, WA, CS, MOR, and MOE in radial direction and height position. These findings can be useful for the development of new applications for coconut stems, such as in construction, landscaping, or furniture manufacturing, as well as for improving our understanding of their structural characteristics.

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中国海南岛椰子树（cocos nucifera）茎干的一些物理和机械特性

研究了 40 年树龄椰子茎在不同径向方向和高度位置上的物理和机械特性。结果表明，在径向，维管束数（NVB）、密度、收缩率、平行于纹理的抗压强度（CS）、断裂模数（MOR）和弹性模量（MOE）从外侧区域到内侧区域持续下降，只有吸水率（WA）值从外侧区域到内侧区域上升。在高度方向上，密度和 MOE 从底部到顶部逐渐减小，而 NVB 和 WA 则逐渐增大。收缩率、CS 和 MOE 从底部到顶部先增加后减少。椰干中的 NVB 会影响密度，并决定 CS、MOR 和 MOE 的主要机械特性。方差分析（双向方差分析）表明，密度、NVB、WA、CS、MOR 和 MOE 在径向和高度位置上存在显著差异。这些发现有助于开发椰子茎的新应用，如建筑、园林绿化或家具制造，也有助于提高我们对其结构特征的认识。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Wood Research 工程技术-材料科学：纸与木材

CiteScore

2.40

自引率

15.40%

发文量

审稿时长

5.4 months

期刊介绍： Wood Research publishes original papers aimed at recent advances in all branches of wood science (biology, chemistry, wood physics and mechanics, mechanical and chemical processing etc.). Submission of the manuscript implies that it has not been published before and it is not under consideration for publication elsewhere.