毛竹纤维细胞壁静态纵向纳米力学性能研究  

Longitudinal Mechanical Properties of Bamboo Cell Wall Determined by Nanoindentation Technique

作　　者：秦韶山[1,2] 殷丽萍 李延军[2,3] QIN Shaoshan1,2）, YIN Liping3）,LI Yanjun2,3）(1 Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan 571737; 2 College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037; 3 School of Engineering, Zhejiang Agriculture Forestry University, Lin＇ an, Zhejiang 31130)

机构地区：[1]中国热带农业科学院橡胶研究所,海南儋州571737 [2]南京林业大学材料科学与工程学院,江苏南京210037 [3]浙江农林大学工程学院,浙江临安311300

出　　处：《热带农业工程》2017年第5期57-61,共5页Tropical Agricultural Engineering

基　　金：海南省自然科学基金(No.317280);浙江省自然科学基金(No.LY16C160009)

摘　　要：以毛竹材为研究对象,采用纳米压痕技术对毛竹材细胞壁的纵向弹性模量和硬度进行原位测定,分析不同竹龄、竹竿高度、竹壁部位对细胞壁力学性能的影响。结果表明:随着竹龄的增加、竹竿高度的上升,弹性模量和硬度均无明显变化;随着竹壁部位由外向内,弹性模量和硬度逐渐下降,降幅分别为13.70%和18.52%。Nanoindentation technique was used to determine the longitudinal MOE and hardness of moso bamboo cell wall. The effects of different age, stick height and wall part of bamboo on the mechanical properties of cell wall were analyzed. Results showed that the MOE and hardness of bamboo cell wall were not changed obviously with the increase of bamboo age, while the same tendency also can be seen with the rise of stick height. Moreover, the MOE and hardness of bamboo cell wall lowered gradually from outside to inside in bamboo wall part, The decreasing amplitude was 13.70 % and 18.52 % respectively.

关 键 词：毛竹 细胞壁 弹性模量 硬度 纳米压痕 

分 类 号：S152.7[农业科学—土壤学]