压缩炭化杨木的微观结构与化学成分

陈琛; 邓玉和; 徐了; 周宇; 陈旻; 吴晶; 王向歌; 杨莹

doi:10.11833/j.issn.2095-0756.2012.05.006

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压缩炭化杨木的微观结构与化学成分

陈琛 , 邓玉和 , 徐了 , 周宇 , 陈旻 , 吴晶 , 王向歌 , 杨莹

文章导航 > 浙江农林大学学报 > 2012 > 29(5): 671-679

陈琛, 邓玉和, 徐了, 周宇, 陈旻, 吴晶, 王向歌, 杨莹. 压缩炭化杨木的微观结构与化学成分[J]. 浙江农林大学学报, 2012, 29(5): 671-679. doi: 10.11833/j.issn.2095-0756.2012.05.006

引用本文:

CHEN Chen, DENG Yu-he, XU Liao, ZHOU Yu, CHEN Min, WU Jing, WANG Xiang-ge, YANG Ying. Microstructure and chemical composition of compressed and carbonized poplar[J]. Journal of Zhejiang A&F University, 2012, 29(5): 671-679. doi: 10.11833/j.issn.2095-0756.2012.05.006

Citation:

CHEN Chen, DENG Yu-he, XU Liao, ZHOU Yu, CHEN Min, WU Jing, WANG Xiang-ge, YANG Ying. Microstructure and chemical composition of compressed and carbonized poplar[J]. Journal of Zhejiang A&F University, 2012, 29(5): 671-679. doi: 10.11833/j.issn.2095-0756.2012.05.006

压缩炭化杨木的微观结构与化学成分

doi: 10.11833/j.issn.2095-0756.2012.05.006

陈琛¹,
邓玉和^1, ,,
徐了²,
周宇³,
陈旻¹,
吴晶¹,
王向歌¹,
杨莹¹

1.
南京林业大学木材工业学院，江苏南京 210037;
2.
浙江升华云峰新材股份有限公司，浙江湖州 313200;
3.
南京林业大学信息学院，江苏南京 210037

详细信息

通信作者: 邓玉和

Microstructure and chemical composition of compressed and carbonized poplar

1.
College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China;
2.
Zhejiang Sublimation Yunfeng New Material Co. Ltd.，Huzhou 313200，Zhejiang，China;
3.
College of Information，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

More Information

Corresponding author: DENG Yu-he

摘要: 研究压缩、炭化过程中木材结构与化学成分的变化对压缩炭化木的应用有重要意义。利用扫描电镜、扫描电镜X射线能谱和红外光谱分析研究了杨木经压缩、炭化的微观结构和木材的化学成分变化。研究发现：意杨Populus euramericana经过压缩、炭化后，细胞腔变小，胞壁距离减小，胞壁距离最大分别缩小56.94%和53.34%，但细胞壁本身仍然保持了其完整性；心边材各元素的变化趋势一致，炭元素上升，氧元素下降，以边材为例，素材O/C 为1.76，压缩、炭化处理后分别为1.65，1.45；杨木在热压和高温炭化过程中，纤维素的降解，使CH伸缩振动吸收峰强度下降，并发生了一定的位移，半纤维素降解使C=O伸缩振动吸收峰强度降低，木质素苯环和酚醚键COC的伸缩振动吸收峰的变化说明木质素也发生了化学反应，炭化后的心材在波数2 853 cm-1附近出现了明显的振动，说明木材内部复杂的化学反应产生了新的化学基团。图9表1参15
- 木材学 /
- 压缩炭化 /
- 杨木 /
- 微观结构 /
- 化学成分
Abstract: The study of microstructure and chemical composition of carbonized wood has an important meaning for its application. Changes in microstructure and chemical composition of compressed and carbonized poplar（Populus euramevicana） were studied using a scanning electron microscope （SEM），Energy-dispersive X-ray spectrum （EDS） Analysis，and Fourier Transform Infrared （FTIR） Spectroscopy. Results showed that after Poplar was compressed and carbonized，to maintain cell wall integrity the cell cavity and the distance between the cell walls，which reduced 56.94%，53.34% at maximum，noticeably diminished. Element content in the sapwood and the heartwood varied similarly after hot-pressing and after carbonization with carbon content increasing and oxygen content decreasing. For example，the C-over-O ration of untreated wood was 1.76，after compressed and carbonized，the ration reduced to 1.65 and 1.45. Cellulose and hemicellulose degradation led to a reduction in peak absorption intensity for CH and C=O during hot-pressing and carbonization with some displacement also taking place. In addition，the change in peak absorption intensity for a benzene ring and phenolic-ether bond illustrated a chemical change in lignin. Thus，after carbonization in the heartwood，the new absorption peak located near the wave number at 2 853 cm-1 indicated that during this treatment a complicated chemical reaction had generated new chemical groups.［Ch，9 fig. 1 tab. 15 ref.］
- wood science /
- compressed and carbonized /
- poplar /
- microstructure /
- chemical composition

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压缩炭化杨木的微观结构与化学成分

doi: 10.11833/j.issn.2095-0756.2012.05.006

1. 南京林业大学木材工业学院，江苏南京 210037;

2. 浙江升华云峰新材股份有限公司，浙江湖州 313200;

3. 南京林业大学信息学院，江苏南京 210037

通信作者: 邓玉和

收稿日期: 2011-11-10
修回日期: 2012-03-09
刊出日期: 2012-10-20

关键词:

摘要: 研究压缩、炭化过程中木材结构与化学成分的变化对压缩炭化木的应用有重要意义。利用扫描电镜、扫描电镜X射线能谱和红外光谱分析研究了杨木经压缩、炭化的微观结构和木材的化学成分变化。研究发现：意杨Populus euramericana经过压缩、炭化后，细胞腔变小，胞壁距离减小，胞壁距离最大分别缩小56.94%和53.34%，但细胞壁本身仍然保持了其完整性；心边材各元素的变化趋势一致，炭元素上升，氧元素下降，以边材为例，素材O/C 为1.76，压缩、炭化处理后分别为1.65，1.45；杨木在热压和高温炭化过程中，纤维素的降解，使CH伸缩振动吸收峰强度下降，并发生了一定的位移，半纤维素降解使C=O伸缩振动吸收峰强度降低，木质素苯环和酚醚键COC的伸缩振动吸收峰的变化说明木质素也发生了化学反应，炭化后的心材在波数2 853 cm-1附近出现了明显的振动，说明木材内部复杂的化学反应产生了新的化学基团。图9表1参15

English Abstract

Microstructure and chemical composition of compressed and carbonized poplar

1. College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China;

2. Zhejiang Sublimation Yunfeng New Material Co. Ltd.，Huzhou 313200，Zhejiang，China;

3. College of Information，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

Corresponding author: DENG Yu-he

Received Date: 2011-11-10
Rev Recd Date: 2012-03-09
Publish Date: 2012-10-20

Keywords:

Abstract: The study of microstructure and chemical composition of carbonized wood has an important meaning for its application. Changes in microstructure and chemical composition of compressed and carbonized poplar（Populus euramevicana） were studied using a scanning electron microscope （SEM），Energy-dispersive X-ray spectrum （EDS） Analysis，and Fourier Transform Infrared （FTIR） Spectroscopy. Results showed that after Poplar was compressed and carbonized，to maintain cell wall integrity the cell cavity and the distance between the cell walls，which reduced 56.94%，53.34% at maximum，noticeably diminished. Element content in the sapwood and the heartwood varied similarly after hot-pressing and after carbonization with carbon content increasing and oxygen content decreasing. For example，the C-over-O ration of untreated wood was 1.76，after compressed and carbonized，the ration reduced to 1.65 and 1.45. Cellulose and hemicellulose degradation led to a reduction in peak absorption intensity for CH and C=O during hot-pressing and carbonization with some displacement also taking place. In addition，the change in peak absorption intensity for a benzene ring and phenolic-ether bond illustrated a chemical change in lignin. Thus，after carbonization in the heartwood，the new absorption peak located near the wave number at 2 853 cm-1 indicated that during this treatment a complicated chemical reaction had generated new chemical groups.［Ch，9 fig. 1 tab. 15 ref.］

引用本文: