2种农作物秸秆纤维细胞壁的纳米力学性能

doi:10.11707/j.1001-7488.20100923

Scientia Silvae Sinicae ›› 2010, Vol. 46 ›› Issue (9): 140-143.doi: 10.11707/j.1001-7488.20100923

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Nano-Mechanical Properties of the Cell Wall of Two Crop Straws

Wu Yan^1,2;Zhou Dingguo¹;Wang Siqun^1,2;Xing Cheng²;Zhang Yang¹

1.College of Wood Science and Technology, Nanjing Forestry University Nanjing 210037; 2.Forest Products Center，University of Tennessee TN USA 37996

Received:2008-12-19 Revised:2009-04-03 Online:2010-09-25 Published:2010-09-25

Abstract

Abstract:

The nano-mechanical properties of the cell wall of two crop straws were investigated by nanoindentation. The results showed: the longitudinal elastic modulus of wheat (Triticum aestivuma) straw was higher than one of rice (Oryza sativa) straw, which was 20.8 and 19.4 GPa, respectively. The values of hardness were 0.65 and 0.50 GPa, respectively. At the nano-scale, the longitudinal elastic modulus in crop straws were lower than that in most of the hardwood species, but higher than that in some softwoods and lyocell fiber. The mean value of hardness of cell walls of crop straws was higher than that of wood and lyocell fiber.

Key words: nanoindentation, crop straw, cell wall, longitudinal elastic modulus, hardness

Wu Yan;Zhou Dingguo;Wang Siqun;Xing Cheng;Zhang Yang. Nano-Mechanical Properties of the Cell Wall of Two Crop Straws[J]. Scientia Silvae Sinicae, 2010, 46(9): 140-143.

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Nano-Mechanical Properties of the Cell Wall of Two Crop Straws

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