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Abstract
A new class of polymeric amine, namely, sulfonated cardo poly(arylene ether sulfone) (SPES-NH 2) was synthesized and used for the preparation of thin-film composite membrane. The TFC membranes were prepared on a polysulfone supporting film through interfacial polymerization with trimesoyl chloride (TMC) solutions and amine solutions containing SPES-NH 2 and m-phenylenediamine (MPDA). The resultant membranes were characterized with water permeation performance, chemical structure, hydrophilicity of active layer and membrane morphology including top surface and cross-section. The membrane prepared under the optimum condition showed the salt rejection and water flux reached 97.3% and 51.2 L/m 2 h, respectively. The high salt rejection and water flux was attributed to the rigid polymer backbone and the presence of strong hydrophilic sulfonic groups.
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