文献类型：期刊文献

英文题名：Quasi-static and dynamic nanoindentation to determine the influence of thermal treatment on the mechanical properties of bamboo cell walls

作者：Li, Yanjun[2,3] Yin, Liping[2,3] Huang, Chengjian[2,3] Meng, Yujie[1] Fu, Feng[4] Wang, Siqun[1] Wu, Qiang[2,3]

第一作者：Li, Yanjun

通信作者：Wang, SQ[1]

机构：[1]Univ Tennessee, Ctr Renewable Carbons, Knoxville, TN 37996 USA;[2]Zhejiang Agr & Forestry Univ, Sch Engn, Linan, Zhejiang, Peoples R China;[3]Key Lab Wood Sci & Technol, Linan, Zhejiang, Peoples R China;[4]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China

年份：2015

卷号：69

期号：7

起止页码：909-914

外文期刊名：HOLZFORSCHUNG

收录：;EI(收录号：20153701260883);Scopus(收录号：2-s2.0-84937784345);WOS:【SCI-EXPANDED(收录号:WOS:000360628700009)】；

基金：The authors are grateful for the support of the Foundation of Zhejiang Provincial Natural Science Foundation of China (No. LZ13C160003), the Foundation of Zhejiang Key Level 1 Discipline of Forestry Engineering, the Project of Science and Technology Department of Zhejiang Province (No. 2012R10023-05), and the Project of Graduate Student Research Innovation of Zhejiang Agriculture and Forestry University (No. 3122013240253).

语种：英文

外文关键词：bamboo; dynamic nanoindentation; heat treatment; quasi-static nanoindentation

摘要：Bamboo was thermally treated at 180 degrees C and 200 degrees C, and the micromechanical properties of its cell walls were investigated by means of quasi-static and dynamic nanoindentation experiments. With increasing treatment temperatures, the average dry density and mass of the bamboo decreased, whereas the already reduced elastic modulus at 180 degrees C of the fiber cell walls did not change, but the hardness showed increasing tendencies. Dynamic nanoindentation revealed reduced storage modulus (E-r') and loss modulus (Er '') for the thermotreated bamboo cell walls compared with the untreated bamboo fibers in all frequency regions. Moreover, E-r', E-r '', and loss tangent (tan delta) of treated bamboo decreased with increasing treatment temperature.