Effects of heat treatment on the chemical compositions and thermal decomposition kinetics of Japanese cedar and beech wood

被引：60

作者：

Chien, Yi-Chi ^{[1
]}

Yang, Teng-Chun ^{[1
]}

Hung, Ke-Chang ^{[1
]}

Li, Cheng-Chun ^{[1
]}

Xu, Jin-Wei ^{[1
]}

Wu, Jyh-Horng ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Dept Forestry, Taichung 402, Taiwan

来源：

POLYMER DEGRADATION AND STABILITY | 2018年 / 158卷

关键词：

Chemical composition; Heat treatment; Principal component analysis; Thermal decomposition kinetics; Wood; SCOTS PINE SAPWOOD; INFRARED-SPECTROSCOPY; PRINCIPAL COMPONENT; FT-IR; TECHNOLOGICAL PROPERTIES; MECHANICAL-PROPERTIES; MAGNETIC-RESONANCE; COLOR CHANGES; TREATED WOOD; DEGRADATION;

D O I：

10.1016/j.polymdegradstab.2018.11.003

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This study investigated variations in the chemical compositions and thermal decomposition kinetics of Japanese cedar and beech wood during heat treatment. Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectra revealed that various reactions, such as hemicellulose deacetylation, condensation reactions causing lignin cross-linking, and reductions in cellulose amorphous regions, were carried out during the heat treatment process. In addition, combinations of FTIR spectra and principal component analysis (PCA) succeeded in discriminating the major changes in functional groups of wood at various heat treatment temperatures. On the other hand, the decrease in the storage modulus of wood was more rapid in the presence of oxygen than in an oxygen-free atmosphere during heat treatment. Accordingly, the activation energies of thermal decomposition using Arrhenius model for Japanese cedar and beech were 120.6 and 141.3 kJ/mol under air, respectively, while these values were 124.8 and 150.0 kJ/mol under nitrogen, respectively. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：220 / 227

页数：8

共 64 条

[21] THERMAL-DEGRADATION PRODUCTS OF WOOD - GAS-CHROMATOGRAPHIC SEPARATION AND MASS-SPECTROMETRIC CHARACTERIZATION OF MONOMERIC LIGNIN DERIVED PRODUCTS [J].

FAIX, O ;

MEIER, D ;

FORTMANN, I .

HOLZ ALS ROH-UND WERKSTOFF, 1990, 48 (7-8) :281-285

[22] STUDIES ON THE LIGNIN OF THE BAMBOO SPECIES PHYLLOSTACHYS-MAKINOI HAY [J].

FENGEL, D ;

SHAO, X .

WOOD SCIENCE AND TECHNOLOGY, 1985, 19 (02) :131-137

[23] Thermal degradation of wood treated with flame retardants [J].

Gao, M. ;

Sun, C. Y. ;

Wang, C. X. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2006, 85 (03) :765-769

[24] The effects of heat treatment on physical and technological properties and surface roughness of Camiyani Black Pine (Pinus nigra Arn. subsp pallasiana var. pallasiana) wood [J].

Gunduz, Gokhan ;

Korkut, Suleyman ;

Korkut, Derya Sevim .

BIORESOURCE TECHNOLOGY, 2008, 99 (07) :2275-2280

[25] Investigation of wood wettability changes during heat treatment on the basis of chemical analysis [J].

Hakkou, M ;

Pétrissans, M ;

Zoulalian, A ;

Gérardin, P .

POLYMER DEGRADATION AND STABILITY, 2005, 89 (01) :1-5

[26] C-13 NUCLEAR MAGNETIC-RESONANCE STUDY OF THE RAPID STEAM HYDROLYSIS OF RED OAK [J].

HAW, JF ;

MACIEL, GE ;

BIERMANN, CJ .

HOLZFORSCHUNG, 1984, 38 (06) :327-331

[27] A COMPARISON OF SOLUTION AND SOLID-STATE C-13 NMR-SPECTRA OF LIGNINS AND LIGNIN MODEL COMPOUNDS [J].

HAWKES, GE ;

SMITH, CZ ;

UTLEY, JHP ;

VARGAS, RR ;

VIERTLER, H .

HOLZFORSCHUNG, 1993, 47 (04) :302-312

[28]

Hill C.A., 2007, Wood modification: Chemical, thermal and other processes

[29]

Hoadley RB., 2000, UNDERSTANDING WOOD C, V2nd

[30] A combined FT-IR microscopy and principal component analysis on softwood cell walls [J].

Hori, R ;

Sugiyama, J .

CARBOHYDRATE POLYMERS, 2003, 52 (04) :449-453

← 1 2 3 4 5 6 7 →