构树皮化学成分、纤维形态与制浆性能分析  

Analyses on Chemical Composition Fiber Morphology and Pulping Properties of Broussonetia papyrifera Bark Produced in Dry-hot Valley of the Jinshajiang River

作　　者：姜磊[1] 廖声熙[2] 李昆[2] 杨振寅[2] 赵一鹤[2] 张春华[2] 李立[2] 

机构地区：[1]西南林学院教育改革发展研究中心,云南昆明650224 [2]中国林业科学研究院资源昆虫研究所,云南昆明650224

出　　处：《西南林学院学报》2007年第3期71-75,共5页Journal of Southwest Forestry College

基　　金：国家林业局退耕还林科技示范点关键技术研究项目;云南省"十五"科技攻关项目(2001NG55);国家林业局重点科技推广项目(2003-049-L49)资助

摘　　要：对金沙江千热河谷区构树韧皮纤维的化学组成、纤维形态和成浆物理性能进行了分析，结果表明：构树韧皮的木素含量低，纤维素含量较高，达43．06％，具有较大的纤维利用率；构树皮纤维长度平均值为9．37mm，分布范围3．3～19．6mm，纤维长宽比高达509，属于一种优良的长纤维原料；在实验室条件下，构树皮纸浆得率42．47％，硬度6．70（Kappa值），耐破指数为2．23kPa·m^2／g，撕裂指数34、53mN·m^2／g，耐折度192次，抗张指数27．67N·m／g，具有较优的制浆性能．The chemical compositions, fiber morphology and physical pulping characteristics of Broussonetia papyrifera bark produced in dry - hot valley of the Jinshajiang River were analyzed. The results are as follows ： The lignin content was low and the holocellulose content was high in the bast part of the bark. The fiber of the bark was of great utilization value for its cellulose content reached 43.06%. The fiber length ranged from 3. 3 mm to 16. 94 mm with the average length 9.37 mm, and the ratio of fiber length to width was 509, indicating the bark fiber should be an excellent raw material for long -fiber making. According to the laboratory measurements, the pulp yield was 42. 47% ,the hardness （the Kappa value） was 6. 70, the burst resistance index was 2. 23 kPa ·m^2/g, the tearing index was 34. 53 m N ·m^2/g, the folding endurance value was 192, and the tension resistance value was 27.67 N ·m^2/g. These indexes showed that the bark of Broussonetia papyrifera produced in dry - hot valley of the Jinshajiang River was well suitable for pulp making.

关 键 词：构树 树皮 化学组成 纤维形态 成浆性能 金沙江 

分 类 号：TS711[轻工技术与工程—制浆造纸工程]