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Bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO)-based amphoteric hollow-fiber membranes / Zhenfeng Cheng in Industrial & engineering chemistry research, Vol. 49 N° 18 (Septembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 18 (Septembre 2010) . - pp. 8741–8748 Titre : Bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO)-based amphoteric hollow-fiber membranes : preparation and lysozyme adsorption Type de document : texte imprimé Auteurs : Zhenfeng Cheng, Auteur ; Cuiming Wu, Auteur ; Weihua Yang, Auteur Année de publication : 2010 Article en page(s) : pp. 8741–8748 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Hollow-fiber  membrane Résumé : For the recovery and purification of proteins, an amphoteric hollow-fiber membrane (AHFM) was prepared from bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO) by ethylenediamination and carboxylation. The success in modifying BPPO was confirmed by FTIR spectra, amphoteric group density, anion-exchange capacity (AEC), and cation-exchange capacity (CEC). For potential applications, the membranes were tested for the adsorption of lysozyme, and the results showed that the adsorption amount increased with increasing initial lysozyme concentration. The adsorption fits the Langmuir isotherm and the Freundlich equation well, and the maximum experimental amount of lysozyme adsorbed was found to be 4.00 mg/g, which was close to the calculated values (3.85 and 4.13 mg/g according to the Langmuir and Freundlich equations, respectively). ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100348e [article] Bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO)-based amphoteric hollow-fiber membranes : preparation and lysozyme adsorption [texte imprimé] / Zhenfeng Cheng, Auteur ; Cuiming Wu, Auteur ; Weihua Yang, Auteur . - 2010 . - pp. 8741–8748. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 18 (Septembre 2010) . - pp. 8741–8748 Mots-clés : Hollow-fiber  membrane Résumé : For the recovery and purification of proteins, an amphoteric hollow-fiber membrane (AHFM) was prepared from bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO) by ethylenediamination and carboxylation. The success in modifying BPPO was confirmed by FTIR spectra, amphoteric group density, anion-exchange capacity (AEC), and cation-exchange capacity (CEC). For potential applications, the membranes were tested for the adsorption of lysozyme, and the results showed that the adsorption amount increased with increasing initial lysozyme concentration. The adsorption fits the Langmuir isotherm and the Freundlich equation well, and the maximum experimental amount of lysozyme adsorbed was found to be 4.00 mg/g, which was close to the calculated values (3.85 and 4.13 mg/g according to the Langmuir and Freundlich equations, respectively). ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100348e