Experimental Investigation of Dynamic Viscoelasticity of Bamboo with Different Ages

Abstract:

The dynamic viscoelasticity of the outer and inner part of bamboo with different ages was investigated using Dynamic Mechanical Thermal Analyzer (DMA). The results showed that,storage modulus (E’) and loss modulus (E’’) of both outer and inner part of bamboo were increased at temperature between 25-250°Cas the bamboo ages increasing. In addition, E’ and E’’ of the outer part of bamboo were higher of the inner part with the same bamboo age. Also a significant loss peak in E’’~T curves between 190-210°C was found. The peak values of E’’~ T curves of the outer part only shown slight variation with bamboo age increasing. However, significantly different of peak values was found in the inner part. This was caused by the difference of the chemical composition in outer and inner part of bamboo with different ages. The width of E’’ peak varied slightly in outer bamboo of different ages, but in the inner part , it was increased as the age increasing. This revealed that in the outer part of different ages, the chemical composition of the molecular values was closer, In the inner bamboo, it was increased as the age increasing..

• Periodical: Applied Mechanics and Materials (Volumes 651-653)
• Pages: 236-240
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.651-653.236
• Online since: September 2014
• Authors: Wei Gang Zhang, Zhe Wang, Chun De Jin*
• Keywords: Bamboo, Dynamic Viscoelasticity, Loss Modulus(E’’), Storage Modulus(E’)

References

[1] Chengrui Xiang, Qisheng Zhang. Glass Transition Temperature of Bamboo after Softening Treatment at High Temperature. Scientia silvae sinicae. Forum Vol. 42-7 (1992), p.87.

[2] Mingjie Guan, Qisheng Zhang. Hygrothermal Effects of Bamboo by Dynamic Mechanical Analysis. Journal of Nanjing Forestry University. Forum Vol. 30-1 (2006), p.65.

[3] Xiaodong Huang, Zehui Jiang, Haitao Cheng. Study on Dynamic Mechaulcal Thermal Analysis for Green Covering of Bamboo. China Forestry Science AndTechnology. Forum Vol. 22-5 (2008), p.45.

[4] Xiaodong Huang, Minfang Hui, Yanliu. Effect of bamboo at different of ages on the biomass composite material performance of the wind turbine blades. Journal of Fuzhou University( Natural Science Edition). Forum Vol. 39-1 (2011), p.90.

[5] Xiaodong Huang. Evaluation and Manufacture of Grading Bamboo and Chinese fir Laminated Lumber of Wind Turbine Blades Materials. Chinese Academy of Forestry. (2008).

[6] . Irvine G. M. The glass transition of lignin and hemicelluloses and their measurement by differential thermal analysis. Tappi Journal, Forum Vol. (1984), p.118.

[7] Kelly S. S., T. G. Rial and W. G. Glasser. Relaxation behavior of the amorphous components of wood. Journal of Material Science, Forum Vol. 22 (1987), p.617.

[8] Garcia R., M. C. Triboulot, A. Merlin, X. Deglise. Variation of the viscoelastic properties of wood as a surface finishes substrate. Wood Science and Technology, Forum Vol. 34-2 (2000), p.99.

DOI: 10.1007/s002260000035

[9] Xiaozhen Li, Haiqing Ren, Xiaoqing Wang. Analysis on Dynamic Mechanical Properties of Phyllostachys pubescens Material. Journal of Southwest Forestry University. Forum Vol. 34-4 (2011), p.80.