Novel flame - retardant and antidripping branched polyesters prepared via phosphorus - containing ionic monomer as end - capping agent / Jun-Sheng Wang in Industrial & engineering chemistry research, Vol. 49 N° 9 (Mai 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 9 (Mai 2010) . - pp. 4190–4196 Titre : Novel flame - retardant and antidripping branched polyesters prepared via phosphorus - containing ionic monomer as end - capping agent Type de document : texte imprimé Auteurs : Jun-Sheng Wang, Auteur ; Hai-Bo Zhao, Auteur ; Xin-Guo Ge, Auteur Année de publication : 2010 Article en page(s) : pp. 4190–4196 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Ionic Monomer Résumé : A series of novel branched polyester-based ionomers were synthesized with trihydroxy ethyl esters of trimethyl-1,3,5-benzentricarboxylate (as branching agent) and sodium salt of 2-hydroxyethyl 3-(phenylphosphinyl)propionate (SHPPP, as end-capping agent) by melt polycondensation. The chemical structures of the branched polyester-based ionomers were confirmed with 1H and 31P NMR spectra. The effects of branching and ionic end groups on the melt behavior and thermal properties were investigated by differential scanning calorimetry and thermogravimetric analysis. The flammability and fire behavior were characterized by limiting oxygen index (LOI) and cone calorimeter. The LOI values of branched poly(ethylene terephthalate)s (PETs) are higher than that of pure PET. The cone calorimeter parameters of the samples such as heat release rate, total heat release, and time to ignition indicate that the fire safety of branched polyester-based ionomers is improved by introducing SHPPP. The effects of SHPPP on accelerating char forming and antidripping could be observed clearly from the pictures of the samples after LOI test. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100057n [article] Novel flame - retardant and antidripping branched polyesters prepared via phosphorus - containing ionic monomer as end - capping agent [texte imprimé] / Jun-Sheng Wang, Auteur ; Hai-Bo Zhao, Auteur ; Xin-Guo Ge, Auteur . - 2010 . - pp. 4190–4196. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 9 (Mai 2010) . - pp. 4190–4196 Mots-clés : Ionic Monomer Résumé : A series of novel branched polyester-based ionomers were synthesized with trihydroxy ethyl esters of trimethyl-1,3,5-benzentricarboxylate (as branching agent) and sodium salt of 2-hydroxyethyl 3-(phenylphosphinyl)propionate (SHPPP, as end-capping agent) by melt polycondensation. The chemical structures of the branched polyester-based ionomers were confirmed with 1H and 31P NMR spectra. The effects of branching and ionic end groups on the melt behavior and thermal properties were investigated by differential scanning calorimetry and thermogravimetric analysis. The flammability and fire behavior were characterized by limiting oxygen index (LOI) and cone calorimeter. The LOI values of branched poly(ethylene terephthalate)s (PETs) are higher than that of pure PET. The cone calorimeter parameters of the samples such as heat release rate, total heat release, and time to ignition indicate that the fire safety of branched polyester-based ionomers is improved by introducing SHPPP. The effects of SHPPP on accelerating char forming and antidripping could be observed clearly from the pictures of the samples after LOI test. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100057n

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