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Dimensional stability and dynamic young's modulus of tropical light hardwood chemically treated with methyl methacrylate in combination with hexamethylene diisocyanate cross - linker / Md. Saiful Islam in Industrial & engineering chemistry research, Vol. 50 N° 7 (Avril 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 3900-3906 [ Titre : Dimensional stability and dynamic young's modulus of tropical light hardwood chemically treated with methyl methacrylate in combination with hexamethylene diisocyanate cross - linker Type de document : texte imprimé Auteurs : Md. Saiful Islam, Auteur ; Sinin Hamdan, Auteur ; Ismail Jusoh, Auteur Année de publication : 2011 Article en page(s) : pp. 3900-3906 [ Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Hardwood  Tropical  zone  Stability Résumé : Chemical treatment is often used to improve the physical and mechanical properties of wood materials. In this study, wood polymer composites (WPC) were prepared from five types of tropical wood species by impregnating the woods with methyl methacrylate (MMA) combined with a cross-linker hexamethylene diisocyanate (HMD[C). Their dimensional stability and mechanical properties were then investigated. The impregnation of wood with monomer systems and polymerization was accomplished through vacuum-pressure and catalyst heat treatment method, respectively. The manufacturing of WPC was confirmed through FT-IR spectroscopy and X-ray diffraction (XRD) analyses. The dimensional stability of manufactured WPC in terms of volumetric swelling (S) and antishrink efficiency (ASE) was measured and found to be improved on treatment. In addition, the modified WPC had lower moisture absorption and higher water repellent efficiency compared to raw wood. The mechanical property of treated samples in terms of dynamics Young's modulus (Ed) was also shown to improve. These improvements in properties were observed as more effective with MMA―HMDIC combination. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24027635 [article] Dimensional stability and dynamic young's modulus of tropical light hardwood chemically treated with methyl methacrylate in combination with hexamethylene diisocyanate cross - linker [texte imprimé] / Md. Saiful Islam, Auteur ; Sinin Hamdan, Auteur ; Ismail Jusoh, Auteur . - 2011 . - pp. 3900-3906 [. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 3900-3906 [ Mots-clés : Hardwood  Tropical  zone  Stability Résumé : Chemical treatment is often used to improve the physical and mechanical properties of wood materials. In this study, wood polymer composites (WPC) were prepared from five types of tropical wood species by impregnating the woods with methyl methacrylate (MMA) combined with a cross-linker hexamethylene diisocyanate (HMD[C). Their dimensional stability and mechanical properties were then investigated. The impregnation of wood with monomer systems and polymerization was accomplished through vacuum-pressure and catalyst heat treatment method, respectively. The manufacturing of WPC was confirmed through FT-IR spectroscopy and X-ray diffraction (XRD) analyses. The dimensional stability of manufactured WPC in terms of volumetric swelling (S) and antishrink efficiency (ASE) was measured and found to be improved on treatment. In addition, the modified WPC had lower moisture absorption and higher water repellent efficiency compared to raw wood. The mechanical property of treated samples in terms of dynamics Young's modulus (Ed) was also shown to improve. These improvements in properties were observed as more effective with MMA―HMDIC combination. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24027635