|
|
|
|
|
|
| Effects of Vacuum Heat Treatment on Morphology and Structure of Larch Wood Cellulose |
| SUN Bai-ling, WANG Xiao-qing, CHAI Yu-bo* |
Research Institute of Wood Industry，Chinese Academy of Forestry, Beijing 100091, China
|
|
|
|
|
Abstract In this study, larch wood, the main timber species in Northeast China, was improved by vacuum heat treatment to explore its cellulose morphology and structural thermal response mechanism. The wet chemical method was used to extract the cellulose of untreated and heat-treated larch wood under different vacuum heat treatment conditions (180~220 ℃, 6 hours). The cellulose morphology was observed by scanning electron microscope, and its chemical structure and crystallinity were analyzed by X-ray photoelectron spectroscopy and X-ray diffraction. The results showed that the cellulose extracted from untreated wood was rod-shaped and had an ordered parallel and rigid structure. After heat treatment, the wood cellulose curved, and its surface twisted. With the increase inheat treatment temperature, the surface distortion of cellulose became more significant. The X-ray photoelectron spectroscopy analysis showed that the increase in heat treatment intensity decreased the cellulose O/C ratio from 65.5% to 59.5%. The C1 content increased, and C2 and C3 decreased, respectively, indicating that the cellulose carbon chain extracted from heat-treated wood was shortened. Hemicellulose and lignin-carbohydrate formed by the condensation reaction of lignin and carbohydrate during heat treatment might remain on its surface. In addition, with the increase inheat treatment temperature, wood cellulose's crystallinity increased, the proportion of cellulose Ⅱ increased, and cellulose Ⅰ decreased. Furthermore, the morphology of cellulose extracted from wood before and after heat treatment presented different structures due to the differences in the cell structure and molecular group conformation between cellulose Ⅰ and Ⅱ. This research will help to deeply understand the thermal response characteristics of wood chemical composition and provide a theoretical basis for the optimization of wood vacuum heat treatment technology.
|
|
Received: 2023-02-10
Accepted: 2023-09-21
|
|
|
|
Corresponding Authors:
CHAI Yu-bo
E-mail: chaiyubo@caf.ac.cn
|
|
[1] Esteves B, Perreira H, Viana H, et al. Forests, 2021, 12(8): 1114.
[2] Li T, Cheng DL, Avramidis S, et al. Construction and Building Materials, 2017, 30: 671.
[3] Wang X H, Wu Z H, Fang L, et al. Forest Products Journal, 2015, 65: 7.
[4] Sun B L, Zhang Y M, Su Y Y, et al. Forests, 2023, 14(1): 43.
[5] Wang Z, Sun B L, Liu J L. Bioresources, 2016, 11(1): 2349.
[6] French A D. Cellulose, 2014, 21: 885.
[7] Park S, Baker J O, Himmel M E, et al. Biotechnology for Biofuels, 2010, 3: 10.
[8] Chen H, Yu Y, Zhong T, et al. Cellulose, 2017, 24(1): 333.
[9] Kamdem D P, Riedl B, Adnot A, et al. Journal of Applied Polymer Science, 1991, 43: 901.
[10] Wei X, Wang Y, Li J, et al. Carbohydrate Polymers, 2018, 201: 387.
|
| [1] |
LI Yu-heng1, 2, 3, YANG Lu1, 2, 3*, GE Ruo-chen1, 2, 3. Study on the Interaction and Stability of Mixed Proteinaceous Binders in Polychrome Relics[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(07): 1946-1951. |
| [2] |
WAN Zhen-zhen1, WU Jia1, SHI Ning1*, WANG Yong-qing1*, LIU Shao-feng1, SHEN Yi-xuan2, WANG Hai-yun1. Design and Research of Glow Discharge Excitation Source With Large
Aperture Auxiliary Anode[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(06): 1640-1647. |
| [3] |
YU Man*, XIE Guo-xin, ZHAO Xiao-juan, LI Zhao*. Study on the Effect of Nano Zinc Oxide on the Intrinsic and Spectral Properties of Perovskite Films[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(05): 1482-1486. |
| [4] |
ZHANG Xiao-kai1, JIANG Rui-feng2, FU Xiao-xue2, LIU Zhong-min3*. Preparation, Characterization and Catalytic Properties of
ZnO/ZnSe Composites[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(04): 1005-1010. |
| [5] |
WANG Jia-zheng, LIU Jia, SUN Wei-xin, ZHOU Jian-zhang, WU De-yin*, TIAN Zhong-qun. Simulative Study of Multiband Perfect Absorption and Sensing Properties of Plasmonic Silver Film Coupled Si3N4 Nanocavities in Visible-NIR
Region[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(03): 663-669. |
| [6] |
LI Jia-xuan, FU Zi-zhen, CAO Xi-qing, HU Zhi-guo, FU Xing-hu*, FU Guang-wei, JIN Wa, BI Wei-hong. Surface-Enhanced Raman Scattering Performance of Macroporous
Grapefruit-Type Microstructured Fiber Optic Probes[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(02): 527-533. |
| [7] |
WANG Cai-ling1，ZHANG Jing1，WANG Hong-wei2*, SONG Xiao-nan1, JI Tong3. A Hyperspectral Image Classification Model Based on Band Clustering and Multi-Scale Structure Feature Fusion[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 258-265. |
| [8] |
WANG Xin-qiang1, 3, CHU Pei-zhu1, 3, XIONG Wei2, 4, YE Song1, 3, GAN Yong-ying1, 3, ZHANG Wen-tao1, 3, LI Shu1, 3, WANG Fang-yuan1, 3*. Study on Monomer Simulation of Cellulose Raman Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 164-168. |
| [9] |
GUO Wei1, CHANG Hao2*, XU Can3, ZHOU Wei-jing2, YU Cheng-hao1, JI Gang2. Effect of Continuous Laser Irradiation on Scattering Spectrum
Characteristics of GaAs Cells[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3674-3681. |
| [10] |
TIAN Fu-chao1, CHEN Lei2*, PEI Huan2, BAI Jie-qi1, ZENG Wen2. Study of Factors Influencing the Length of Argon Plasma Jets at
Atmospheric Pressure With Needle Ring Electrodes[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3682-3689. |
| [11] |
WANG Ling-juan, OU Quan-hong, YAN Hao, TANG Jun-qi*. Preparation and Catalytic Properties of Gold Nanoflowers[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3747-3752. |
| [12] |
ZHENG Ni-na1, 2*, XIE Pin-hua1, QIN Min1, DUAN Jun1. Research on the Influence of Lamp Structure of the Combined LED Broadband Light Source on Differential Optical Absorption Spectrum
Retrieval and Its Removing Method[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(11): 3339-3346. |
| [13] |
WAN Huang-xu1, 2, LIU Ji-qiang1*, HAN Xi-qiu1, 2, LIANG Jin-long2, ZHOU Ya-dong1, FAN Wei-jia1, WANG Ye-jian1, QIU Zhong-yan1, MENG Fan-wei3. Ultrastructure and Mineral Composition of Bathymodiolus Shell From Wocan-1 Hydrothermal Vent, Northwest Indian Ocean[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(11): 3497-3503. |
| [14] |
GUO Jing-fang, LIU Li-li*, CHENG Wei-wei, XU Bao-cheng, ZHANG Xiao-dan, YU Ying. Effect of Interaction Between Catechin and Glycosylated Porcine
Hemoglobin on Its Structural and Functional Properties[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(11): 3615-3621. |
| [15] |
CHENG Hong1, YAN Ding-ce1*, WU Li-qing2, XU Jun3. Spectral Magnitude Uncertainty in Measurement of Protein Circular
Dichroism Spectra—An Empirical Study on Cytochrome C[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(10): 3105-3110. |
|
|
|
|
