Elastic Modulus of Single Cellulose Fibrils Evaluated by Atomic Force Microscopy
Introduction Cellulose fibers are attractive for replacing man-made fibers, such as glass fibers, as reinforcement or fillers to make environmental friendly products because they are renewable, biodegradable and the most abundant biopolymer in the world. Due to the potential higher mechanical properties than individual wood fibers, fibrils in micro and nano scales have been generated from cellulose fibers and used to reinforce polymers to make nanocomposites in the past two decades. The mechanical properties of the fibrils could helpful to evaluate the degradation of fibrils during the isolation process and the potential reinforcement of the fibrils for polymers. For smaller fibrils, it is very difficult to measure the mechanical properties directly due to the difficulty in isolating individual cellulose fibrils, measuring the very tiny forces and deformations involved. This study was focused on the effects of process and cellulose source on elastic modulus of single cellulose fibrils evaluated by AFM. Elastic moduli of individual cellulose fibrils isolated from regenerated cellulose fiber (Lyocell), pure cellulose flours (TC40), and pulp fiber by ultrasonic treatment were investigated.
Qingzheng Cheng Siqun Wang David P.Harper Jingxin Wang Yingtao Liu
Tennessee Forest Products Center, University of Tennessee, 2506 Jacob Dr., Knoxville, TN 37996, USA Tennessee Forest Products Center, University of Tennessee, 2506 Jacob Dr., Knoxville, TN 37996, USA Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV 26506, USA Material Science and Engineering College, Northeast Forestry University, Harbin, China, 150040
国际会议
International Symposium on Wood Science and Technology(IAWPS 2008)(国际木材产品学会联合会2008学术研讨会)
哈尔滨
英文
531-532
2008-09-27（万方平台首次上网日期，不代表论文的发表时间）