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Intermolecular Interactions / Yuri Yampolskii 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. 12031–12037 Titre : Intermolecular Interactions : New Way to Govern Transport Properties of Membrane Materials Type de document : texte imprimé Auteurs : Yuri Yampolskii, Auteur ; Alexandre Alentiev, Auteur ; Galina Bondarenko, Auteur Année de publication : 2011 Article en page(s) : pp. 12031–12037 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Polyetherimides  Polymers Résumé : Investigation of the gas permeation parameters of several polyetherimides and polymers of intrinsic microporosity showed that their properties (permeability and permselecitivity) are sensitive to the presence of low molecular mass compounds (chloroform, lower alcohols, water) that are capable of forming hydrogen bonds. Using the FTIR method and quantum chemical calculations, it was shown that such bonds are formed and they induce structural (conformation) changes in the polymer matrices. Other types of weak interactions, dipole−dipole interactions, are responsible for unusual sorption behavior of acetone in amorphous Teflon AF2400. Therefore, intermolecular interactions can influence transport and sorption properties of glassy membrane materials. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100097a [article] Intermolecular Interactions : New Way to Govern Transport Properties of Membrane Materials [texte imprimé] / Yuri Yampolskii, Auteur ; Alexandre Alentiev, Auteur ; Galina Bondarenko, Auteur . - 2011 . - pp. 12031–12037. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 23 (Décembre 2010) . - pp. 12031–12037 Mots-clés : Polyetherimides  Polymers Résumé : Investigation of the gas permeation parameters of several polyetherimides and polymers of intrinsic microporosity showed that their properties (permeability and permselecitivity) are sensitive to the presence of low molecular mass compounds (chloroform, lower alcohols, water) that are capable of forming hydrogen bonds. Using the FTIR method and quantum chemical calculations, it was shown that such bonds are formed and they induce structural (conformation) changes in the polymer matrices. Other types of weak interactions, dipole−dipole interactions, are responsible for unusual sorption behavior of acetone in amorphous Teflon AF2400. Therefore, intermolecular interactions can influence transport and sorption properties of glassy membrane materials. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100097a