Influence of preparation procedure and ferric oxide nanoparticles addition on transport properties of homogeneous cation-exchange SPPO/SPVC membrane

Bulletin of Materials Science

关键词: Cation-exchange membranes;    ferric oxide nanoparticles;    transport number;    permselectivity;    phase inversion method.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Homogeneous cation-exchange membranes were prepared through evaporation and phase inversion methodsusing sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) (SPPO) and sulfonated polyvinylchloride as binders. The effectof polymers blend’s ratio and preparation method on structure and electrochemical properties of the prepared membraneswere evaluated. The microstructures of the membranes were investigated by scanning electron microscopy (SEM) andthe sulfonation of polyvinylchloride was confirmed by elemental analyses. Moreover, the membranes performance wasevaluated by ion-exchange capacity (IEC), fixed ion concentration, membrane potential, transport number, permselectivity,areal resistance, ionic permeability, flux of ions, current efficiency, membrane oxidative stability, mechanical properties andwater content tests. The results indicated that IEC and water content were affected by the SPPO content and microstructuresof the membranes. The results showed increased efficiency and suitable electrochemical properties for membranes preparedby the evaporation method in comparison with others. Also, Fe$_2$O$_3$ nanoparticles were synthesized at room temperature by a simple sonochemical reaction between ferric chloride and NaOH. The results revealed that the addition of different amounts of Fe$_2$O$_3$ nanoparticles to the polymeric matrix could affect the hydrophilicity and transport properties of ion-exchange membranes.

【 授权许可】

CC BY