Reactive phase inversion for manufacture of asymmetric poly (ether imide sulfone) membranes
Charry Prada, Iran David
Tayouo Djinsu, Russell
Giannelis, Emmanuel P.
Nunes, Suzana Pereira
KAUST DepartmentWater Desalination and Reuse Research Center (WDRC)
Biological and Environmental Sciences and Engineering (BESE) Division
Environmental Science and Engineering Program
Nanostructured Polymeric Membrane Lab
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AbstractPoly (ether imide sulfone) membranes were manufactured by combining phase inversion and functionalization reaction between epoxy groups and amine modified polyether oligomers (Jeffamine) or TiO2 nanoparticles. Polysilsesquioxanes containing epoxy functionalities were in-situ grown in the casting solution and made available for further reaction with amines in the coagulation/annealing baths. The membranes were characterized by field emission scanning electron microscopy, porosimetry and water flux measurements. Water permeances up to 1500 l m-2 h-1 bar-1 were obtained with sharp pore size distribution and a pore diameter peak at 66 nm, confirmed by porosimetry, which allowed 99.2% rejection of γ-globulin. Water flux recovery of 77.5% was achieved after filtration with proteins. The membranes were stable in 50:50 dimethylformamide/water, 50:50 N-methyl pyrrolidone/water and 100% tetrahydrofuran. The possibility of using similar concept for homogeneous and stable attachment of nanoparticles on the membrane surface was demonstrated.
SponsorsThe authors thank the KAUST Analytical and Imaging Core Lab and SABIC for supporting T. Jalal and for supplying Extern, as well as Poornima Madhavan and Yihui Xie for helping with rheology and permeability measurements and Karina Kopec for discussions. The nanoparticle functionalization was developed in the frame of the King Abdullah University of Science and Technology (KAUST) Award No. KUS-C1-018-2 (KAUST-Cornell Center).
JournalReactive and Functional Polymers