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Depolymerization of ODPA/ODA polyimide in a fused silica capillary reactor and batch autoclave reactor from 320 to 350 °C in Hot compressed water / Fen Huang in Industrial & engineering chemistry research, Vol. 51 N° 20 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 20 (Mai 2012) . - pp. 7001-7006 Titre : Depolymerization of ODPA/ODA polyimide in a fused silica capillary reactor and batch autoclave reactor from 320 to 350 °C in Hot compressed water Type de document : texte imprimé Auteurs : Fen Huang, Auteur ; Yuanyuan Huang, Auteur ; Zhiyan Pan, Auteur Année de publication : 2012 Article en page(s) : pp. 7001-7006 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Autoclave  Batchwise  Reactor Résumé : Depolymerization of polyimide synthesized from 4,4'-oxidiphthalic anhydride and 4,4'-diaminodiphenyl ether monomers (ODPA/ODA PI) in hot compressed water was carried out in a fused silica capillary reactor (FSCR) and batch autoclave reactor system. The phase behavior of ODPA/ODA PI in water during the heating, reaction, and cooling stages of the process in FSCR was observed with an image recording system from under the microscope. The effects of temperature (320―350 °C) and reaction time (30―90 min) on the depolymerization yield and products yields in batch autoclave reactor were investigated at a fixed H2O/PI ratio, and optimal conditions were established. Additionally, an understanding of the reaction pathway of ODPA/ODA PI depolymerization in hot compressed water was developed. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25925041 [article] Depolymerization of ODPA/ODA polyimide in a fused silica capillary reactor and batch autoclave reactor from 320 to 350 °C in Hot compressed water [texte imprimé] / Fen Huang, Auteur ; Yuanyuan Huang, Auteur ; Zhiyan Pan, Auteur . - 2012 . - pp. 7001-7006. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 20 (Mai 2012) . - pp. 7001-7006 Mots-clés : Autoclave  Batchwise  Reactor Résumé : Depolymerization of polyimide synthesized from 4,4'-oxidiphthalic anhydride and 4,4'-diaminodiphenyl ether monomers (ODPA/ODA PI) in hot compressed water was carried out in a fused silica capillary reactor (FSCR) and batch autoclave reactor system. The phase behavior of ODPA/ODA PI in water during the heating, reaction, and cooling stages of the process in FSCR was observed with an image recording system from under the microscope. The effects of temperature (320―350 °C) and reaction time (30―90 min) on the depolymerization yield and products yields in batch autoclave reactor were investigated at a fixed H2O/PI ratio, and optimal conditions were established. Additionally, an understanding of the reaction pathway of ODPA/ODA PI depolymerization in hot compressed water was developed. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25925041