Sorption and thermodynamic properties of buried juvenile Pinus sylvestris L. wood aged 1,170 ±A 40 BP

被引：30

作者：

Garcia Esteban, Luis ^{[1
]}

de Palacios, Paloma ^{[1
]}

Garcia Fernandez, Francisco ^{[1
]}

Antonio Martin, Juan ^{[2
]}

Genova, Mar ^{[3
]}

Ignacio Fernandez-Golfin, Juan ^{[4
]}

机构：

[1] Univ Politecn Madrid, Dept Ingn Forestal, Escuela Tecn Super Ingenieros Montes, Catedra Tecnol Madera, E-28040 Madrid, Spain

[2] Univ Politecn Madrid, Dept Silvopascicultura, Escuela Tecn Super Ingenieros Montes, Catedra Anat Fisiol & Genet Forestal, E-28040 Madrid, Spain

[3] Univ Politecn Madrid, Dept Prod Vegetal, Catedra Bot & Protecc Vegetal, Escuela Univ Ingn Tecn Forestal, E-28040 Madrid, Spain

[4] CIFOR INIA, Dept Prod Forestales, Madrid 28040, Spain

来源：

WOOD SCIENCE AND TECHNOLOGY | 2009年 / 43卷 / 7-8期

关键词：

CALIBRATION;

D O I：

10.1007/s00226-009-0261-6

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

The hygroscopicity and thermodynamic properties of buried juvenile Pinus sylvestris L. wood with an age of 1,170 +/- A 40 BP were compared with the corresponding values of juvenile wood of the same species from recently cut trees. The 35 and 50A degrees C isotherms were plotted following the saturated salts method and subsequently fitted in accordance with the GAB model. The isotherms were then compared by means of the hysteresis coefficients. X-ray diffractograms were used to analyse the crystal structure of the cellulose. The effect of time on the buried wood caused hemicelluloses degradation and a decrease in the crystallinity index and the crystallite length, resulting in an increase in the proportion of amorphous zones. Because of this, the equilibrium moisture contents of the buried wood are higher than of the recent wood, both in adsorption and desorption. In terms of the thermodynamic properties, the heat involved is greater in the buried wood than in the recent wood.

引用

页码：679 / 690

页数：12

共 20 条

[11] Physico-chemical characteristics of waterlogged archaeological wood [J].