Response of hygroscopicity to heat treatment and its relation to durability of thermally modified wood

被引：95

作者：

Li, Tao ^{[1
,2
]}

Cheng, Da-li ^{[1
]}

Avramidis, Stavros ^{[2
]}

Walinder, Magnus E. P. ^{[3
]}

Zhou, Ding-guo ^{[1
]}

机构：

[1] Nanjing Forestry Univ, Coll Mat Sci & Engn, Nanjing 210037, Jiangsu, Peoples R China

[2] Univ British Columbia, Dept Wood Sci, Vancouver, BC V6T 1Z4, Canada

[3] KTH Royal Inst Technol, Dept Civil & Architectural Engn, Div Bldg Mat, SE-10044 Stockholm, Sweden

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 144卷

基金：

瑞典研究理事会;

关键词：

Poplar wood; Heat treatment process; Hygroscopicity; Durability; Hailwood-Horrobin model; VAPOR SORPTION BEHAVIOR; WATER-VAPOR; MECHANICAL-PROPERTIES; MOISTURE-CONTENT; HYDROXYL-GROUPS; TREATED WOOD; MOSO BAMBOO; SPECTROSCOPY; PERFORMANCE; RESISTANCE;

D O I：

10.1016/j.conbuildmat.2017.03.218

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In an attempt to study the effect of heat treatment on hygroscopicity and durability of wood, Poplar (Populus spp.) wood was thermally modified using five different temperatures between 170 degrees C and 210 degrees C, for a fixed duration of 3 h. Moisture adsorption behavior and the resistance to soft rot fungi were investigated thereafter. Based on the Hailwood-Horrobin sorption model, the amount of available sorption sites within specimens for the different groups of Poplar wood were calculated from the model's m(0) parameter. Chemical analysis of the changes in wood components induced by heat treatment allows for a comparison between the easily obtained m(0) and the results of time-consuming wood decay tests. The proposed m(0)-based method for highly efficient evaluation and prediction of durability of thermally modified wood could optimize future research on the mechanisms of heat treatment processes. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：671 / 676

页数：6

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