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Preparation and study of the electrochemical properties of magnesium phosphate membranes
Author(s) -
Khan Mohammad Mujahid Ali
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34103
Subject(s) - membrane , fourier transform infrared spectroscopy , electrolyte , scanning electron microscope , polystyrene , materials science , analytical chemistry (journal) , chemical engineering , electrochemistry , chemistry , chromatography , polymer , composite material , electrode , biochemistry , engineering
Polystyrene‐based magnesium phosphate membranes were prepared by a sol–gel method with various 1 : 1 electrolytes at different pressures and concentrations. The prepared membranes were characterized for thickness, porosity, and moisture content and by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The FTIR spectra showed a negative shift from the normal polystyrene value due to interaction with metal ions. SEM images revealed nonpreferential orientation without any visible cracks. Teorell, Meyer, and Sievers's method was used to determine the transport number of ions, mobility, distribution coefficient, and charge density of the membrane. The order of surface charge density for a 1 : 1 electrolyte solution was found to be KCl > NaCl > LiCl. However, the membrane potential followed the reverse order. The membrane was found to be stable in acidic and basic environments. This study demonstrated the potential applications of inorganic precipitate membranes in the field of separation science. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012