Studies of monomer impregnation and polymerised in situ in wood using dynamic mechanical thermal analyser.
Ten tropical hardwoods are impregnated with methyl methacrylate and polymerised in‐situ by use of catalysts and heat techniques. Treatability of the wood, as determined from the fractional volumetric retentions of monomers that are a fraction of voids filled by the impregnant, showed that the mean r...
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| Format: | Article |
| Language: | English English |
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Maney Publishing
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/24845/ http://psasir.upm.edu.my/id/eprint/24845/1/Studies%20of%20monomer%20impregnation%20and%20polymerised%20in%20situ%20in%20wood%20using%20dynamic%20mechanical%20thermal%20analyser.pdf |
| _version_ | 1848845147294400512 |
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| author | Hamdan, S. Liew, Y. L. Hasan, M. Talib, Zainal Abidin |
| author_facet | Hamdan, S. Liew, Y. L. Hasan, M. Talib, Zainal Abidin |
| author_sort | Hamdan, S. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Ten tropical hardwoods are impregnated with methyl methacrylate and polymerised in‐situ by use of catalysts and heat techniques. Treatability of the wood, as determined from the fractional volumetric retentions of monomers that are a fraction of voids filled by the impregnant, showed that the mean retention range from 15·03% (Acacia Mangium) to 56·59% (Cratoxylum Arborescens). The penetration of the monomer evaluated using ultrasonic waves showed that the treated wood had higher velocities which indicated significant increase in density. The present paper deals with the viscoelastic relaxation of polymerised treated wood. The efficiency of the monomer as a plasticiser is studied through the temperature dependence of the storage modulus (E′) and loss tangent (tan δ) of treated and untreated wood by dynamic mechanical thermal analysis (DMTA) over a temperature in the range from −100 to 200°C. The storage modulus E′ decreased with temperature and as the maximum mechanical damping developed, the glass transition temperature (T g) of the plasticised wood decreased with the plasticiser content. |
| first_indexed | 2025-11-15T08:42:11Z |
| format | Article |
| id | upm-24845 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T08:42:11Z |
| publishDate | 2011 |
| publisher | Maney Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-248452015-09-14T01:25:56Z http://psasir.upm.edu.my/id/eprint/24845/ Studies of monomer impregnation and polymerised in situ in wood using dynamic mechanical thermal analyser. Hamdan, S. Liew, Y. L. Hasan, M. Talib, Zainal Abidin Ten tropical hardwoods are impregnated with methyl methacrylate and polymerised in‐situ by use of catalysts and heat techniques. Treatability of the wood, as determined from the fractional volumetric retentions of monomers that are a fraction of voids filled by the impregnant, showed that the mean retention range from 15·03% (Acacia Mangium) to 56·59% (Cratoxylum Arborescens). The penetration of the monomer evaluated using ultrasonic waves showed that the treated wood had higher velocities which indicated significant increase in density. The present paper deals with the viscoelastic relaxation of polymerised treated wood. The efficiency of the monomer as a plasticiser is studied through the temperature dependence of the storage modulus (E′) and loss tangent (tan δ) of treated and untreated wood by dynamic mechanical thermal analysis (DMTA) over a temperature in the range from −100 to 200°C. The storage modulus E′ decreased with temperature and as the maximum mechanical damping developed, the glass transition temperature (T g) of the plasticised wood decreased with the plasticiser content. Maney Publishing 2011-01 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/24845/1/Studies%20of%20monomer%20impregnation%20and%20polymerised%20in%20situ%20in%20wood%20using%20dynamic%20mechanical%20thermal%20analyser.pdf Hamdan, S. and Liew, Y. L. and Hasan, M. and Talib, Zainal Abidin (2011) Studies of monomer impregnation and polymerised in situ in wood using dynamic mechanical thermal analyser. Materials Science and Technology, 27 (1). pp. 40-43. ISSN 0267-0836 http://maneypublishing.com/ 10.1179/174328409X407542 English |
| spellingShingle | Hamdan, S. Liew, Y. L. Hasan, M. Talib, Zainal Abidin Studies of monomer impregnation and polymerised in situ in wood using dynamic mechanical thermal analyser. |
| title | Studies of monomer impregnation and polymerised in situ in wood using dynamic mechanical thermal analyser. |
| title_full | Studies of monomer impregnation and polymerised in situ in wood using dynamic mechanical thermal analyser. |
| title_fullStr | Studies of monomer impregnation and polymerised in situ in wood using dynamic mechanical thermal analyser. |
| title_full_unstemmed | Studies of monomer impregnation and polymerised in situ in wood using dynamic mechanical thermal analyser. |
| title_short | Studies of monomer impregnation and polymerised in situ in wood using dynamic mechanical thermal analyser. |
| title_sort | studies of monomer impregnation and polymerised in situ in wood using dynamic mechanical thermal analyser. |
| url | http://psasir.upm.edu.my/id/eprint/24845/ http://psasir.upm.edu.my/id/eprint/24845/ http://psasir.upm.edu.my/id/eprint/24845/ http://psasir.upm.edu.my/id/eprint/24845/1/Studies%20of%20monomer%20impregnation%20and%20polymerised%20in%20situ%20in%20wood%20using%20dynamic%20mechanical%20thermal%20analyser.pdf |