摘要
以天然次生林23年生黄枝润楠Machilus Versicolora木材为研究对象,以密粘褶菌(褐腐菌)Gloeophyllum trabeum和彩绒革盖菌(白腐菌)Coriolus versicolor为侵染细菌,应用木材天然耐腐性试验方法测定分析了其天然耐腐性,采用扫描电镜(SEM)、傅立叶红外光谱(FTIR)、X射线衍射仪(XRD)、热重差热综合热分析法(TG-DS)C等仪器和方法表征分析了腐朽前后黄枝润楠木材微观结构和化学成分的变化情况。结果表明,黄枝润楠木材耐白腐菌达到Ⅰ级强耐腐,耐褐腐菌达到Ⅲ级稍耐腐;白腐菌侵蚀后木材相对结晶度增大,而褐腐菌侵蚀后则减小;在TG-DSC热重分析的热解第三阶段,褐腐菌侵蚀后的黄枝润楠木材质量减少大于未腐朽木材和白腐菌侵蚀后的木材;与腐朽前相比,腐朽后黄枝润楠木材的最大放、吸热反应温度均向高温方向偏移。
23-year Machilus versicolora was felled for wood specimen from secondary forest in Nanjing,Fujian province.They were treated by Gloeophyllum trabeum and Coriolus versicolor for testing the natural durability method of wood natural decay resistance in this paper.Microstructure and chemical compositions of specimen before and after degraded were characterized by SEM,FTIR,XRD and TG-DSC.The result showed that the natural durability M.versicolora specimen to C.versicolor reached grade I(strong resistance)while only gradeⅢ(slight resistance)to G.trabeum.The relative crystallinity of M.versicolora specimen increased after treatment of C.versicolor,but it decreased after treatment of G.trabeum.During the third stage of pyrolysis,mass loss rate of specimen treated by G.trabeum was larger than that before test and treated by C.versicolor.Compared with before test,the maximum exothermic and endothermic reaction temperature for specimen shifted to higher temperature.
作者
吴小莲
李清芸
陈孝丑
刘偲
齐文玉
林金国
WU Xiao-lian;LI Qing-yun;CHEN Xiao-chou;LIU Cai;QI Wen-yu;LIN Jin-guo(College of Material Engineering,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Fujian Forestry Science and Technology Test Center,Nanjing 363600,China)
出处
《浙江林业科技》
2022年第3期49-54,共6页
Journal of Zhejiang Forestry Science and Technology
基金
福建省科技厅重点项目“黄枝润楠优异种质资源保存及繁育技术研究”(闽科计﹝2013﹞30号、闽财指﹝2013﹞525号)
福建农林大学科技创新专项基金项目(编号:KF2015008,CXZX2016007)。
关键词
黄枝润楠木材
天然耐腐性
密粘褶菌
彩绒革盖菌
表征分析
Machilus versicolora wood
natural durability
Gloeophyllum trabeum
Coriolus versicolor
characterization analysis
作者简介
吴小莲,硕士研究生,从事木材科学研究,E-mail:1083178976@qq.com;通信作者:林金国,教授,博士生导师,从事木材科学研究,E-mail:linjinguo67@163.com。
