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Ball mill-assisted dechlorination of flexible and rigid poly(vinyl chloride) in NaOH/EG solution / Tomohito Kameda ; Masahiko Ono ; Guido Grause ; Tadaaki Mizoguchi in Industrial & engineering chemistry research, Vol. 47 n°22 (Novembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8619–8624 Titre : Ball mill-assisted dechlorination of flexible and rigid poly(vinyl chloride) in NaOH/EG solution Type de document : texte imprimé Auteurs : Tomohito Kameda, Auteur ; Masahiko Ono, Auteur ; Guido Grause, Auteur ; Tadaaki Mizoguchi, Auteur Année de publication : 2008 Article en page(s) : p. 8619–8624 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Dechlorination  vinyl  chloride  NaOH/EG Résumé : Both flexible and rigid forms of poly(vinyl chloride) (PVC) were effectively dechlorinated in NaOH/ethylene glycol (EG) solution during ball mill pulverization. The high degree of dechlorination obtained was attributed to the increased surface area of the crushed PVC particles and the resulting enhancement of contact between the PVC and dissolved hydroxide ions. The common additives diisononyl phthalate and CaCO3 were easily separated from the PVC bulk during the dechlorination reaction. The reaction proceeded under chemical control, with degrees of dechlorination for both flexible and rigid PVC increasing with temperature with apparent activation energies of 110 and 80 kJ/mol, respectively. This reaction was accurately represented by a modified shrinking-core model. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8006819 [article] Ball mill-assisted dechlorination of flexible and rigid poly(vinyl chloride) in NaOH/EG solution [texte imprimé] / Tomohito Kameda, Auteur ; Masahiko Ono, Auteur ; Guido Grause, Auteur ; Tadaaki Mizoguchi, Auteur . - 2008 . - p. 8619–8624. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8619–8624 Mots-clés : Dechlorination  vinyl  chloride  NaOH/EG Résumé : Both flexible and rigid forms of poly(vinyl chloride) (PVC) were effectively dechlorinated in NaOH/ethylene glycol (EG) solution during ball mill pulverization. The high degree of dechlorination obtained was attributed to the increased surface area of the crushed PVC particles and the resulting enhancement of contact between the PVC and dissolved hydroxide ions. The common additives diisononyl phthalate and CaCO3 were easily separated from the PVC bulk during the dechlorination reaction. The reaction proceeded under chemical control, with degrees of dechlorination for both flexible and rigid PVC increasing with temperature with apparent activation energies of 110 and 80 kJ/mol, respectively. This reaction was accurately represented by a modified shrinking-core model. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8006819