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Carbonization of poly (methyl methacrylate) by incorporating hydroxyapatite nanorods during thermal degradation / Yangyang Dong in Industrial & engineering chemistry research, Vol. 50 N° 19 (Octobre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 10903-10909 Titre : Carbonization of poly (methyl methacrylate) by incorporating hydroxyapatite nanorods during thermal degradation Type de document : texte imprimé Auteurs : Yangyang Dong, Auteur ; Zhou Gui, Auteur ; Saihua Jiang, Auteur Année de publication : 2011 Article en page(s) : pp. 10903-10909 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Thermal  degradation  Hydroxyapatite  Carbonization Résumé : Poly(methyl methacrylate)/hydroxyapatite nanorod (PMMA/HANR) composites were synthesized by in situ polymerization of methyl methacrylate (MMA) in a suspension of HANRs in ethanol. It was found that the thermal properties of the composites were improved effectively by increasing the inorganic HANRloading, especially when the amount of loaded HANRs was high enough (≥9.3 wt %). The experimental results showed that graphitized char was generated in the residue after thermal degradation of the composites in air at 550 °C for 0.5 h. The residues of the composites with higher inorganic loadings formed a compact and continuous network structure made up of inorganic fillers and carbonaceous char. This indicates that the carbonization behavior of HANRs in PMMA matrix leads to improvement of the thermal properties of the polymer. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573283 [article] Carbonization of poly (methyl methacrylate) by incorporating hydroxyapatite nanorods during thermal degradation [texte imprimé] / Yangyang Dong, Auteur ; Zhou Gui, Auteur ; Saihua Jiang, Auteur . - 2011 . - pp. 10903-10909. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 10903-10909 Mots-clés : Thermal  degradation  Hydroxyapatite  Carbonization Résumé : Poly(methyl methacrylate)/hydroxyapatite nanorod (PMMA/HANR) composites were synthesized by in situ polymerization of methyl methacrylate (MMA) in a suspension of HANRs in ethanol. It was found that the thermal properties of the composites were improved effectively by increasing the inorganic HANRloading, especially when the amount of loaded HANRs was high enough (≥9.3 wt %). The experimental results showed that graphitized char was generated in the residue after thermal degradation of the composites in air at 550 °C for 0.5 h. The residues of the composites with higher inorganic loadings formed a compact and continuous network structure made up of inorganic fillers and carbonaceous char. This indicates that the carbonization behavior of HANRs in PMMA matrix leads to improvement of the thermal properties of the polymer. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573283