PREPARATION AND CHARACTERIZATION OF BROMINATED POLYPHENYLENE OXIDE MEMBRANES
Abstract
- In present research work, three different ratios of brominated polyphenylene oxide (BPPO) membranes were prepared by mixing with dimethyl form amide (DMF) as a solvent with the help of magnetic stirrer. The possible structure of membrane was determined by using Fourier-Transform Infrared spectroscopy (FT IR). In addition, the ion exchange capacity of each membrane was investigated by Mohr titration method. The resistance of the membrane was determined by Multimeter at the Department of Physics, Mandalay University. The morphology of the membranes was studied by Scanning Electron Microscopy (SEM). The solubility of each membrane was determined by dipping the membrane in various solvents such as water, ethanol, chloroform, distilled water and sodium hydroxide. The characteristic peak C-Br of membranes appeared at 1018.15 cm-1 was determined by FT IR spectroscopy. In addition, the ion exchange capacity measurement informs that 45 % BPPO membrane gives 1.48 mmol/g which is in agreement with the anion exchange membrane (AEM) membrane that can be used for fuel cell. The resistance of the membrane was determined by Multimeter and 45 % brominated (BPPO) membrane showed the suitable resistance value of 6 MΩ before immersing in 1 M NaOH solution as well as it shows 4.5 MΩ after immersing in 1 M NaOH solution. Furthermore, the swelling ratio of 45 % BPPO membrane indicates that informs the more ion exchange group corresponds to greater swelling ratio and high solubility.
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Year
- 2019
Author
-
Myint Myint Khaing
Subject
- Chemistry
Publisher
- Myanmar Academy of Arts and Science (MAAS)