我们的网站为什么显示成这样?

可能因为您的浏览器不支持样式,您可以更新您的浏览器到最新版本,以获取对此功能的支持,访问下面的网站,获取关于浏览器的信息:

|Table of Contents|

毛竹及其组成单元的水分吸着特性(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2012年02期
Page:
11-14
Column:
研究论文
publishdate:
2012-04-10

Article Info:/Info

Title:
Hygroscopic behavior of bamboo and its blocking units
Author(s):
JIANG Zehui WANG Hankun YU Yan* TIAN Genlin LIU Xing’e
International Center for Bamboo and Rattan, Beijing 100102, China
Keywords:
bamboo fiber parenchyma cells hygroscopic fiber saturation point
Classification number :
S795
DOI:
10.3969/j.jssn.1000-2006.2012.02.003
Document Code:
A
Abstract:
In this paper, the moisture sorption isotherms of bamboo power, bamboo blocks, chemically macerated bamboo fibers and parenchymal cells were respectively established by measuring their corresponding adsorption equilibrium moisture content(EMC)at different relative humidity(RH)levels. The results indicate that all the established moisture sorption isotherms of bamboo are characterized with anti-S shaped curves, which is normally found in wood and wood composites. The moisture sorption isotherm of bamboo powder is as a whole located above that of bamboo blocks with a maxim value of 1.5% at 46% RH, however the difference at fiber saturation point(FSP)is only about 0.37%. The moisture content at FSP of bamboo fibers and parenchyma cells is 34.07% and 44.24% respectively, significantly higher than that of bamboo blocks and bamboo powders. It was explained that the chemical maceration facilitated the formation of multi-layer water adsorption and condensed water in the bamboo cell wall.

References

[1] Skaar C. Wood-Water Relations[M]. Berlin Heidelberg:Spring-Verlag, 1988.
[2] 刘一星,赵广杰.木质资源材料学[M].北京:中国林业出版社,2004.
[3] Almeida G, Hernandez R E. Changes in physical properties of tropical and temperate hardwoods below and above the fiber saturation point[J]. Wood Sci Technol,2006, 40(7):599-613.
[4] Green D W, Link C L, DeBonis A L, et al. Predicting the effect of moisture content on the flexural properties of southern pine dimension lumber[J]. Wood Fiber Sci, 1986, 18(1): 134-156.
[5] Wang S Y, Wang H L. Effects of moisture content and specific gravity on static bending properties and hardness of six wood species[J]. Wood Sci, 1999, 45(2):127-133.
[6] Kojima Y, Yamamoto H. Properties of the cell wall constituents in relationto the longitudinal elasticity of wood[J]. Wood Sci Technol, 2004, 37(5): 427-434.
[7] Kretschmann D E, Green D W. Modeling moisture content-mechanical property relationships for clear southern pine[J]. Wood Fiber Sci, 1996, 28(3): 320-337.
[8] Green D W, Evans J W, Barrett J D, et al. Predicting the effect of moisture content on the flexural properties of douglas-fir dimension lumber[J]. Wood Fiber Sci, 2007,20(1): 107-131.
[9] 王汉坤,余雁,喻云水,等.气干和饱水状态下毛竹4种力学性质的比较[J].林业科学,2010,46(10):119-123.
[10] 王汉坤,喻云水,余雁,等.毛竹纤维饱和点随竹龄的变化规律[J].中南林业科技大学学报:自然科学版,2010,30(2):112-115.
[11] 王汉坤,余雁,喻云水,等.不同竹龄毛竹材纤维饱和点的测定[J].南京林业大学学报:自然科学版,2010,34(6):91-94.
[12] 杨晓东,顾安忠.活性炭吸附的理论研究进展[J].炭素,2000(4):11-15.
[13] Benard P, Chaine R. Modeling of high-pressure adsorption isotherms above the critical temperature on micrpporous adsorbents: application to methane[J]. Langmuir,1997,13(4):808-813.
[14] Dent R W. Amultiayer theory for gas sorption I.sorption of a single gas[J].Text Res J, 1977,40:145-152.
[15] 赵广杰.木材细胞壁中吸着水的介电弛豫[M].北京:中国林业出版社,2002.
[16] Skaar C.Wood-Water Relations[M].New York:Spring-Verlag,1988.
[17] Brunaver S, Emmeff P H, Teller E. Adsorption of gases in multimolecular layers[J]. J Am Chem Soc,1938,60(2):309-319.
[18] Liese W. The Anatomy of Bamboo Culms[R]. Beijing:Inter Network for Bamboo and Rattan, 1998.

Last Update: 2012-04-10