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Preparation, morphology, performance, and hydrophilicity studies of poly(amide-imide) incorporated cellulose acetate ultrafiltration membranes / Sahadevan Rajesh in Industrial & engineering chemistry research, Vol. 50 N° 9 (Mai 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5550-5564 Titre : Preparation, morphology, performance, and hydrophilicity studies of poly(amide-imide) incorporated cellulose acetate ultrafiltration membranes Type de document : texte imprimé Auteurs : Sahadevan Rajesh, Auteur ; Kavalapara H. Shobana, Auteur ; Selvaraj Anitharaj, Auteur Année de publication : 2011 Article en page(s) : pp. 5550-5564 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Membrane  separation  Ultrafiltration  Morphology  Preparation Résumé : Fouling-resistant cellulose acetate (CA) membranes were prepared by the phase inversion technique using hydrophilic poly(amide-imide) (PAI) as the modification agent. The prepared membranes were characterized using attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), pure water flux, water content, porosity, and contact angle technique to investigate the influence of PAI on the final properties of the membranes. Intermolecular interactions between the components in blend membranes were established byATR-FTIR, and semicrystalline nature was conhrmed by XRD. SEM analysis showed that blend CA membranes have a thinner top layer and higher porosity in the sublayer. AFM surface roughness analysis data substantiate the enhanced surface porosity with an increase in PAI content, while the mean pore size decreases. The contact angle measurements indicated that the hydrophilicity of the CA membranes was improved by the addition of PAI due to the preferential orientation of functional groups towards the surface. Moreover, the surface free energy parameters of the membrane such as surface free energy, interfacial free energy, work of adhesion, and spreading coefficient were calculated. From the results, it was revealed that low interfacial free energy membranes prepared by the incorporation of PAI may be valuable in fouling-resistant industrial separations. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128678 [article] Preparation, morphology, performance, and hydrophilicity studies of poly(amide-imide) incorporated cellulose acetate ultrafiltration membranes [texte imprimé] / Sahadevan Rajesh, Auteur ; Kavalapara H. Shobana, Auteur ; Selvaraj Anitharaj, Auteur . - 2011 . - pp. 5550-5564. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5550-5564 Mots-clés : Membrane  separation  Ultrafiltration  Morphology  Preparation Résumé : Fouling-resistant cellulose acetate (CA) membranes were prepared by the phase inversion technique using hydrophilic poly(amide-imide) (PAI) as the modification agent. The prepared membranes were characterized using attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), pure water flux, water content, porosity, and contact angle technique to investigate the influence of PAI on the final properties of the membranes. Intermolecular interactions between the components in blend membranes were established byATR-FTIR, and semicrystalline nature was conhrmed by XRD. SEM analysis showed that blend CA membranes have a thinner top layer and higher porosity in the sublayer. AFM surface roughness analysis data substantiate the enhanced surface porosity with an increase in PAI content, while the mean pore size decreases. The contact angle measurements indicated that the hydrophilicity of the CA membranes was improved by the addition of PAI due to the preferential orientation of functional groups towards the surface. Moreover, the surface free energy parameters of the membrane such as surface free energy, interfacial free energy, work of adhesion, and spreading coefficient were calculated. From the results, it was revealed that low interfacial free energy membranes prepared by the incorporation of PAI may be valuable in fouling-resistant industrial separations. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128678