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Synthesis and properties of linear poly (ether sulfone)s with hyperbranched terminal groups / Keiichi Osano in Industrial & engineering chemistry research, Vol. 49 N° 23 (Décembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 23 (Décembre 2010) . - pp. 12098–12103 Titre : Synthesis and properties of linear poly (ether sulfone)s with hyperbranched terminal groups Type de document : texte imprimé Auteurs : Keiichi Osano, Auteur ; Lauren Force, Auteur ; S. Richard Turner, Auteur Année de publication : 2011 Article en page(s) : pp. 12098–12103 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Polymers Résumé : Linear−dendritic ABA copolymers, where A and B are hyperbranched and linear polymers, respectively, were synthesized by growing hyperbranched poly(ether ketone)s onto the ends of fluoro-terminated poly(ether sulfone)s. The unreacted fluoro-terminal groups of the hyperbranched polymers were capped by tert-butylphenol. The reactions were carried out at 90 °C to suppress ether cleavage. The results from NMR and SEC showed that multiple tert-butylphenol units were successfully attached to the terminal segments of the polymers. Analogous systems with sulfonated end groups were also synthesized by capping the fluoro terminal groups with a sulfonated phenol. This synthetic method is a versatile way to introduce multiple functional groups onto the ends of poly(ether sulfone)s. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100236y [article] Synthesis and properties of linear poly (ether sulfone)s with hyperbranched terminal groups [texte imprimé] / Keiichi Osano, Auteur ; Lauren Force, Auteur ; S. Richard Turner, Auteur . - 2011 . - pp. 12098–12103. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 23 (Décembre 2010) . - pp. 12098–12103 Mots-clés : Polymers Résumé : Linear−dendritic ABA copolymers, where A and B are hyperbranched and linear polymers, respectively, were synthesized by growing hyperbranched poly(ether ketone)s onto the ends of fluoro-terminated poly(ether sulfone)s. The unreacted fluoro-terminal groups of the hyperbranched polymers were capped by tert-butylphenol. The reactions were carried out at 90 °C to suppress ether cleavage. The results from NMR and SEC showed that multiple tert-butylphenol units were successfully attached to the terminal segments of the polymers. Analogous systems with sulfonated end groups were also synthesized by capping the fluoro terminal groups with a sulfonated phenol. This synthetic method is a versatile way to introduce multiple functional groups onto the ends of poly(ether sulfone)s. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100236y