| 不同年龄构树皮的纤维、化学特性与制浆性能研究 |
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| 引用本文： | 廖声熙,李昆,杨振寅,张春华.不同年龄构树皮的纤维、化学特性与制浆性能研究[J].林业科学研究,2006,19(4):436-440. |
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| 作者姓名： | 廖声熙 李昆 杨振寅 张春华 |
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| 作者单位： | 中国林业科学研究院资源昆虫研究所,云南昆明,650224 |
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| 基金项目： | 国家林业局资助项目，云南省科技计划，国家林业局科技推广项目 |
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| 摘 要： | 对金沙江干热河谷不同年龄构树皮的化学、纤维特性与制浆性能进行研究.结果表明,构皮纤维长、木素含量低,纤维素含量高,纤维形态好,易于成浆.随着年龄的增大,低龄构皮化学组分稍有增大,但至6-7 a,灰分和木素含量增大,纤维素和硝酸-乙醇纤维素含量明显下降,不利于成浆;1%Na0H抽提物一直呈缓慢上升趋势,第6-7年达到最高;构皮纤维长度、长宽比及长纤维比例都随年龄的增长而增加,3-5 a增至最大,第6年后呈快速下降趋势.2-4年生构皮手抄片有较高的结合强度和耐折度,5-7 a后趋于稳定.因此,优质构皮纤维原料最佳收获期为2-5 a,综合经济效益考虑,纤维原料人工林培育最佳周期为2-3 a.
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| 关 键 词： | 金沙江 构树皮 树龄 化学组成 纤维形态 成浆性能 |
| 文章编号： | 1001-1498（2006）04-0436-05 |
| 收稿时间： | 2006-01-12 |
| 修稿时间： | 2006-01-12 |
Influence of Age on Chemical Components,Fiber Morphology and Pulping Properties of Broussonetia papyrifera Bark |
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| LIAO Sheng-xi,LI Kun,YANG Zhen-yin and ZHANG Chun-hua.Influence of Age on Chemical Components,Fiber Morphology and Pulping Properties of Broussonetia papyrifera Bark[J].Forest Research,2006,19(4):436-440. |
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| Authors: | LIAO Sheng-xi LI Kun YANG Zhen-yin and ZHANG Chun-hua |
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| Institution: | Research Institute of Resources Insects, CAF, Kunming 650224, Yanan, China |
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| Abstract: | Chemical compositions, fiber characteristics and pulping properties of Broussonetia papyrifera bark at different ages were researched in hot-valley of Jinsha River. The results showed that the paper mulberry bark has the characteristics of long-fiber, lower lignin content, higher holocellulose and well fiber shapes and is suitable for pulping. With the growing of trees, the chemical compositions of the lower aged bast increase slightly. But to 6-7 years trees, the pulping process are hampered for the glucose and lignin increased obviously while fiber and HNO3 - C2H5OH content decreased sharply. 1% NaOH extractives increased gradually and came up to the maximum when the tree was 6-7 years old. The fiber length, ratio of fiber length to width and fiber proportion increased with the growing of trees, coming up to the maximum when the tree was 3-5 years old, then declined obviously at the 6th year. 2-4 years old trees have better strength and folding endurance and became stable at 5^th-7^th years. As a result, the ideal material of the high-quality fiber comes from 2-5 years old trees. Based on economic efficiency, 2-3 years fiber material plantation rotation is proposed. |
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| Keywords: | Jinsha River tree age Broussonetia papyrifera bark chemical compositions fiber morphology pulping property |
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