Small-angle x-ray scattering study on nanostructural changes with water content in red pine, american pine, and white ash
文献类型：期刊论文
| 作者 | Cheng, Weidong1,2; Xing, Xueqing1,2; Wang, Dehong1,2; Zhang, Kunhao1,2; Cai, Quan1; Mo, Guang1; Chen, Zhongjun1; Wu, Zhonghua1 |
| 刊名 | Journal of wood science
 |
| 出版日期 | 2011-12-01 |
| 卷号 | 57期号:6页码:470-478 |
| 关键词 | Small-angle x-ray scattering Nanostructure Water content Wood |
| ISSN号 | 1435-0211 |
| DOI | 10.1007/s10086-011-1202-1 |
| 通讯作者 | Wu, zhonghua(wuzh@ihep.ac.cn) |
| 英文摘要 | Wood is a highly sophisticated and multihierarchical material. the nanoscale structures in natural cell walls of red pine, american pine, and white ash specimens were investigated using the small-angle x-ray scattering (saxs) technique. a tangent-by-tangent method was used to analyze the saxs data. the results demonstrate that the multihierarchical scatterers in the three specimens can be divided into two dominant components, i.e., a sharp component and a wide component. the sharp component mainly corresponds to the contribution of cellulose microfibrils, and its size is almost unaffected by the water content. however, the wide component includes voids or microcracks and cellulose microfibril aggregates; its size changes, reflecting swelling and water accumulation in the voids or microcracks. because of the different morphological features of the cell walls, softwood (red pine and american pine) displays different tendencies from hardwood (white ash) in terms of changes in the wide component with water content: the average scatterer size of the wide component has an incremental tendency with the water content in softwood, but it has a descending tendency in hardwood. fractal analysis further revealed that in white ash the surface of scatterers is coarser and the scatterers form more compact nanostructures than in the two pine woods. all this nanostructural information can be used to explain well the difference of swelling behaviors between the two pines and the white ash. |
| WOS关键词 | ELEMENTARY CELLULOSE FIBRILS ; PICEA-ABIES ; MECHANICAL-PROPERTIES ; CELL-WALLS ; IN-SITU ; WOOD ; SORPTION ; ADSORPTION ; MICROSCOPY ; SOFTWOOD |
| WOS研究方向 | Forestry ; Materials Science |
| WOS类目 | Forestry ; Materials Science, Paper & Wood |
| 语种 | 英语 |
| WOS记录号 | WOS:000296517500002 |
| 出版者 | SPRINGER TOKYO |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176112 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Wu, Zhonghua |
| 作者单位 | 1.Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Weidong,Xing, Xueqing,Wang, Dehong,et al. Small-angle x-ray scattering study on nanostructural changes with water content in red pine, american pine, and white ash[J]. Journal of wood science,2011,57(6):470-478. |
| APA | Cheng, Weidong.,Xing, Xueqing.,Wang, Dehong.,Zhang, Kunhao.,Cai, Quan.,...&Wu, Zhonghua.(2011).Small-angle x-ray scattering study on nanostructural changes with water content in red pine, american pine, and white ash.Journal of wood science,57(6),470-478. |
| MLA | Cheng, Weidong,et al."Small-angle x-ray scattering study on nanostructural changes with water content in red pine, american pine, and white ash".Journal of wood science 57.6(2011):470-478. |
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