Evaluation of the effects of compression combined with heat treatment by nanoindentation (NI) of poplar cell walls
A combination of compression and heat treatment is a modification method that has great potential for improving the mechanical properties and dimensional stability of wood materials in industrial application. The objective of this project was to track changes in the microstructure, chemical composit...
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| Veröffentlicht in: | Holzforschung 2014-02, Vol.68 (2), p.167-173 |
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| creator | Wang, Xinzhou Deng, Yuhe Wang, Siqun Min, Chen Meng, Yujie Pham, Tuonglam Ying, Yang |
| description | A combination of compression and heat treatment is a modification method that has great potential for improving the mechanical properties and dimensional stability of wood materials in industrial application. The objective of this project was to track changes in the microstructure, chemical composition, cellulose crystallinity, and mechanical properties of the treated poplar cell wall to investigate the mechanism of modification. Poplar boards were compressed at 100°C and subsequently treated in the hot press at 200°C. The results indicated that the treatment contributed to a reduction in porosity without obvious mechanical compression and damage to the cell wall. Hemicellulose degraded, however, and the relative lignin content and cellulose crystallinity increased during the process. The observed increase in relative lignin content and crystallinity may contribute to the improvement of mechanical properties. The longitudinal elastic modulus and hardness of poplar cell walls increased significantly from 12.5 and 0.39 GPa for the control to a maximum of 15.7 and 0.51 GPa for compressed wood with HT, respectively. |
| doi_str_mv | 10.1515/hf-2013-0084 |
| format | Article |
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The objective of this project was to track changes in the microstructure, chemical composition, cellulose crystallinity, and mechanical properties of the treated poplar cell wall to investigate the mechanism of modification. Poplar boards were compressed at 100°C and subsequently treated in the hot press at 200°C. The results indicated that the treatment contributed to a reduction in porosity without obvious mechanical compression and damage to the cell wall. Hemicellulose degraded, however, and the relative lignin content and cellulose crystallinity increased during the process. The observed increase in relative lignin content and crystallinity may contribute to the improvement of mechanical properties. The longitudinal elastic modulus and hardness of poplar cell walls increased significantly from 12.5 and 0.39 GPa for the control to a maximum of 15.7 and 0.51 GPa for compressed wood with HT, respectively.</description><identifier>ISSN: 0018-3830</identifier><identifier>EISSN: 1437-434X</identifier><identifier>DOI: 10.1515/hf-2013-0084</identifier><language>eng</language><publisher>Berlin: De Gruyter</publisher><subject>cell wall ; compressed wood ; crystallinity ; heat treatment ; mechanical properties ; nanoindentation ; poplar wood</subject><ispartof>Holzforschung, 2014-02, Vol.68 (2), p.167-173</ispartof><rights>Copyright Walter de Gruyter GmbH Feb 2014</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c314t-ce7734ca8c875d86c19d4a98831430211d36774b9d6e660899c040f04e93a15d3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.degruyter.com/document/doi/10.1515/hf-2013-0084/pdf$$EPDF$$P50$$Gwalterdegruyter$$H</linktopdf><linktohtml>$$Uhttps://www.degruyter.com/document/doi/10.1515/hf-2013-0084/html$$EHTML$$P50$$Gwalterdegruyter$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,66497,68281</link.rule.ids></links><search><creatorcontrib>Wang, Xinzhou</creatorcontrib><creatorcontrib>Deng, Yuhe</creatorcontrib><creatorcontrib>Wang, Siqun</creatorcontrib><creatorcontrib>Min, Chen</creatorcontrib><creatorcontrib>Meng, Yujie</creatorcontrib><creatorcontrib>Pham, Tuonglam</creatorcontrib><creatorcontrib>Ying, Yang</creatorcontrib><title>Evaluation of the effects of compression combined with heat treatment by nanoindentation (NI) of poplar cell walls</title><title>Holzforschung</title><description>A combination of compression and heat treatment is a modification method that has great potential for improving the mechanical properties and dimensional stability of wood materials in industrial application. The objective of this project was to track changes in the microstructure, chemical composition, cellulose crystallinity, and mechanical properties of the treated poplar cell wall to investigate the mechanism of modification. Poplar boards were compressed at 100°C and subsequently treated in the hot press at 200°C. The results indicated that the treatment contributed to a reduction in porosity without obvious mechanical compression and damage to the cell wall. Hemicellulose degraded, however, and the relative lignin content and cellulose crystallinity increased during the process. The observed increase in relative lignin content and crystallinity may contribute to the improvement of mechanical properties. The longitudinal elastic modulus and hardness of poplar cell walls increased significantly from 12.5 and 0.39 GPa for the control to a maximum of 15.7 and 0.51 GPa for compressed wood with HT, respectively.</description><subject>cell wall</subject><subject>compressed wood</subject><subject>crystallinity</subject><subject>heat treatment</subject><subject>mechanical properties</subject><subject>nanoindentation</subject><subject>poplar wood</subject><issn>0018-3830</issn><issn>1437-434X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNptkE9LxDAQxYMouK7e_AABLwpWk02apt5kWf_AohcFbyWbTGyXblOTrMt-e1PqwYOXyTzmN2_IQ-ickhua0_y2ttmMUJYRIvkBmlDOiowz_nGIJoRQmTHJyDE6CWGdZE4YnSC_-FbtVsXGddhZHGvAYC3oGAap3ab3EMIwTf2q6cDgXRNrXIOKOPpUN9BFvNrjTnWu6UxSo9vly_PV4NG7vlUea2hbvFNtG07RkVVtgLPfd4reHxZv86ds-fr4PL9fZppRHjMNRcG4VlLLIjdSaFoarkop05SRGaWGiaLgq9IIEILIstSEE0s4lEzR3LApuhh9e---thBitXZb36WTVUqLlaLgjCbqeqS0dyF4sFXvm43y-4qSgcur2lZDqtWQasLvRjx9JYI38Om3-9T88f5nTcgZFQX7AQTNfQY</recordid><startdate>20140201</startdate><enddate>20140201</enddate><creator>Wang, Xinzhou</creator><creator>Deng, Yuhe</creator><creator>Wang, Siqun</creator><creator>Min, Chen</creator><creator>Meng, Yujie</creator><creator>Pham, Tuonglam</creator><creator>Ying, Yang</creator><general>De Gruyter</general><general>Walter de Gruyter GmbH</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope><scope>RC3</scope></search><sort><creationdate>20140201</creationdate><title>Evaluation of the effects of compression combined with heat treatment by nanoindentation (NI) of poplar cell walls</title><author>Wang, Xinzhou ; Deng, Yuhe ; Wang, Siqun ; Min, Chen ; Meng, Yujie ; Pham, Tuonglam ; Ying, Yang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c314t-ce7734ca8c875d86c19d4a98831430211d36774b9d6e660899c040f04e93a15d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>cell wall</topic><topic>compressed wood</topic><topic>crystallinity</topic><topic>heat treatment</topic><topic>mechanical properties</topic><topic>nanoindentation</topic><topic>poplar wood</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Xinzhou</creatorcontrib><creatorcontrib>Deng, Yuhe</creatorcontrib><creatorcontrib>Wang, Siqun</creatorcontrib><creatorcontrib>Min, Chen</creatorcontrib><creatorcontrib>Meng, Yujie</creatorcontrib><creatorcontrib>Pham, Tuonglam</creatorcontrib><creatorcontrib>Ying, Yang</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Biotechnology Research Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><jtitle>Holzforschung</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Xinzhou</au><au>Deng, Yuhe</au><au>Wang, Siqun</au><au>Min, Chen</au><au>Meng, Yujie</au><au>Pham, Tuonglam</au><au>Ying, Yang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evaluation of the effects of compression combined with heat treatment by nanoindentation (NI) of poplar cell walls</atitle><jtitle>Holzforschung</jtitle><date>2014-02-01</date><risdate>2014</risdate><volume>68</volume><issue>2</issue><spage>167</spage><epage>173</epage><pages>167-173</pages><issn>0018-3830</issn><eissn>1437-434X</eissn><abstract>A combination of compression and heat treatment is a modification method that has great potential for improving the mechanical properties and dimensional stability of wood materials in industrial application. The objective of this project was to track changes in the microstructure, chemical composition, cellulose crystallinity, and mechanical properties of the treated poplar cell wall to investigate the mechanism of modification. Poplar boards were compressed at 100°C and subsequently treated in the hot press at 200°C. The results indicated that the treatment contributed to a reduction in porosity without obvious mechanical compression and damage to the cell wall. Hemicellulose degraded, however, and the relative lignin content and cellulose crystallinity increased during the process. The observed increase in relative lignin content and crystallinity may contribute to the improvement of mechanical properties. The longitudinal elastic modulus and hardness of poplar cell walls increased significantly from 12.5 and 0.39 GPa for the control to a maximum of 15.7 and 0.51 GPa for compressed wood with HT, respectively.</abstract><cop>Berlin</cop><pub>De Gruyter</pub><doi>10.1515/hf-2013-0084</doi><tpages>7</tpages></addata></record> |
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| language | eng |
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| subjects | cell wall compressed wood crystallinity heat treatment mechanical properties nanoindentation poplar wood |
| title | Evaluation of the effects of compression combined with heat treatment by nanoindentation (NI) of poplar cell walls |
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