Enthalpy relaxation behavior of dry wood detected by temperature-modulated differential scanning calorimetry

被引：1

作者：

Miki, Tsunehisa ^{[1
]}

Sugimoto, Hiroyuki ^{[1
]}

Kojiro, Keisuke ^{[2
]}

Furuta, Yuzo ^{[3
]}

Kanayama, Kozo ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Moriyama Ku, Nagoya, Aichi 4638560, Japan

[2] Misawa Homes Inst Res & Dev Co Ltd MHIRD, Suginami Ku, Tokyo 1680071, Japan

[3] Kyoto Prefectural Univ, Grad Sch Life & Environm Sci, Sakyo Ku, Kyoto 6068522, Japan

来源：

JOURNAL OF WOOD SCIENCE | 2012年 / 58卷 / 05期

关键词：

Temperature-modulated differential scanning calorimetry; Enthalpy relaxation; Annealing; Physical aging; Drying; THERMAL-SOFTENING PROPERTIES; WATER-SWOLLEN WOOD; GLASS-TRANSITION; LIGNIN;

D O I：

10.1007/s10086-012-1264-8

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Enthalpy relaxation of dry wood has been investigated by temperature-modulated differential scanning calorimetry. The reversing and non-reversing heat flow changes revealed that enthalpy relaxation occurred in dry wood, which did not exhibit any clear glass transitions. This enthalpy relaxation behavior seemed to differ significantly from those of previously reported isolated lignins, which implies that the microstructure of dry wood possesses a rigid amorphous state derived from interactions among wood components. The observed enthalpy relaxation is considered to be related to other components besides lignin, and the time-dependent physical properties due to unstable states or physical aging of wood originate not only from lignin but also from other components, such as cellulose and hemicellulose and the interactions between them.

引用

页码：391 / 398

页数：8

共 50 条

[1] Enthalpy relaxation behavior of dry wood detected by temperature-modulated differential scanning calorimetry
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Hiroyuki Sugimoto
Keisuke Kojiro
Yuzo Furuta
Kozo Kanayama
[J]. Journal of Wood Science, 2012, 58 : 391 - 398
[2] Thermal behaviors and transitions of wood detected by temperature-modulated differential scanning calorimetry
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[J]. Journal of Wood Science, 2012, 58 : 300 - 308
[3] Thermal behaviors and transitions of wood detected by temperature-modulated differential scanning calorimetry
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