Softening characteristics of wet wood under quasi static loading
In order to examine the possible influences of temperature on the wood constituents, two groups of wood species namely softwood (needle leaf wood) and hardwood (broad leaf wood) were subjected to heat or steam treatment during large radial compression between 0°C and 200°C. Two well-defined softenin...
| Main Authors: | , , , |
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| Format: | Article |
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Walter de Gruyter GmbH
2000
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| Online Access: | http://psasir.upm.edu.my/id/eprint/112736/ |
| _version_ | 1848866022678855680 |
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| author | Hamdan, S. Dwianto, W. Morooka, T. Norimoto, M. |
| author_facet | Hamdan, S. Dwianto, W. Morooka, T. Norimoto, M. |
| author_sort | Hamdan, S. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | In order to examine the possible influences of temperature on the wood constituents, two groups of wood species namely softwood (needle leaf wood) and hardwood (broad leaf wood) were subjected to heat or steam treatment during large radial compression between 0°C and 200°C. Two well-defined softening regions are observed. Both species showed the glass transition Tg of lignin at ∼90°C and ∼60°C for softwood and hardwood respectively and a second transition region at ∼ 160°C. The softening behavior between the first and second transition in softwood is in contrast with the softening behavior of hardwood. This difference reflects the difference in the distribution of the relaxation process due to lignin, which suggests the difference in chemical structure of lignin between softwood and hardwood. |
| first_indexed | 2025-11-15T14:14:00Z |
| format | Article |
| id | upm-112736 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T14:14:00Z |
| publishDate | 2000 |
| publisher | Walter de Gruyter GmbH |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1127362025-01-13T23:30:09Z http://psasir.upm.edu.my/id/eprint/112736/ Softening characteristics of wet wood under quasi static loading Hamdan, S. Dwianto, W. Morooka, T. Norimoto, M. In order to examine the possible influences of temperature on the wood constituents, two groups of wood species namely softwood (needle leaf wood) and hardwood (broad leaf wood) were subjected to heat or steam treatment during large radial compression between 0°C and 200°C. Two well-defined softening regions are observed. Both species showed the glass transition Tg of lignin at ∼90°C and ∼60°C for softwood and hardwood respectively and a second transition region at ∼ 160°C. The softening behavior between the first and second transition in softwood is in contrast with the softening behavior of hardwood. This difference reflects the difference in the distribution of the relaxation process due to lignin, which suggests the difference in chemical structure of lignin between softwood and hardwood. Walter de Gruyter GmbH 2000 Article PeerReviewed Hamdan, S. and Dwianto, W. and Morooka, T. and Norimoto, M. (2000) Softening characteristics of wet wood under quasi static loading. Holzforschung, 54 (5). pp. 557-560. ISSN 0018-3830 https://www.degruyter.com/document/doi/10.1515/HF.2000.094/html 10.1515/hf.2000.094 |
| spellingShingle | Hamdan, S. Dwianto, W. Morooka, T. Norimoto, M. Softening characteristics of wet wood under quasi static loading |
| title | Softening characteristics of wet wood under quasi static loading |
| title_full | Softening characteristics of wet wood under quasi static loading |
| title_fullStr | Softening characteristics of wet wood under quasi static loading |
| title_full_unstemmed | Softening characteristics of wet wood under quasi static loading |
| title_short | Softening characteristics of wet wood under quasi static loading |
| title_sort | softening characteristics of wet wood under quasi static loading |
| url | http://psasir.upm.edu.my/id/eprint/112736/ http://psasir.upm.edu.my/id/eprint/112736/ http://psasir.upm.edu.my/id/eprint/112736/ |