橄榄竹化学成分、纤维形态及组织比量的分析

Chemical Composition and Fiber Morphology and Tissue Measurements of Indosasa gigantea

在福建省永安洪田镇采集了1至4年生的橄榄竹(Indosasa gigantea),进行竹材不同年龄、不同纵向部位的主要化学成分、纤维形态及组织比量的测定与分析。结果表明:橄榄竹纤维素含量为47.75%,木素含量25.58%,多戊糖18.77%,灰分2.30%,SiO2 0.88%,质量分数为1%NaOH抽提物22.76%,热水抽提物7.17%,冷水抽提物6.19%,苯醇抽提物5.10%,满足造纸质量要求;4年生竹材的平均纤维长度为2.387 mm,平均纤维宽度17.16 um,纤维长宽比139.1,属于长纤维,适宜制浆;竹杆中含有51.3%薄壁组织,38.7%纤维束和10.0%输导组织。综合分析,橄榄竹纤维素含量高,木素含量较低,纤维平均长度长,长宽比高,是一种较优良的竹纤维原料。

The chemical composition and fiber morphology and tissue measurements of Indosasa gigantea in Yongan City were studied. The results showed that the chemical composition Were： the cellulose content was 47.75% , Klason lingnin at 25.58% , pentosan 18.77% , ash 2.30% , SiO2 0.88% , 1% NaOH solvent extractive 22.76%, coldwater solvent extractive 6.19%, hotwater solvent extractive 7.17%, benzene - alcohol solvent extractive 5. 10%, complying with the quality requirements of papermaking. The fiber length and width of 4 - year - old culm were 2. 387 mm, 17.16 um, the length/width ratio was 139.1, so it belonged to long fiber materials for pulping. The proportions of parenchyma, fiber hundles and conducting tissue in bamboo steam were 51.38% ,38.7% and 10%. It is concluded that its cellulose content is high, Klason lignin is low, fiber length is large, therefore, Indosasa gigantea is a good bamboo fiber material.