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Developing homogeneous ion exchange membranes derived from sulfonated polyethersulfone/N-phthaloyl-chitosan for improved hydrophilic and controllable porosity
- Source :
- Korean Journal of Chemical Engineering. 35:1716-1725
- Publication Year :
- 2018
- Publisher :
- Springer Science and Business Media LLC, 2018.
-
Abstract
- Ion exchange membranes (IEMs) composed of sulfonated poly (ether sulfone) (SPES) and N-phthaloyl chitosan (NPHCs) were synthesized. NPHCs was employed in membrane fabrication to improve the porosity and hydrophilicity of membranes. The effect of blend ratio of sulfonation (DS) and NPHCs content on physico-chemical characteristics of home-made membranes was investigated. The morphology of prepared membranes was investigated by Fourier transform infrared spectroscopy (FTIR), X-ray diffractometer (XRD) and scanning electron microscopy (SEM). SEM images revealed the formation of a more porous membrane structure and smoother surface. The electrochemical and physical properties of CEMs were characterized comprising water content, contact angle, ion exchange capacity (IEC) and thermal stability. Membrane water content, surface hydrophilicity and IEC were enhanced with increase of DS and NPHCs blend ratios in casting solution. Furthermore, the diffusion coefficient was also improved slightly with increase of DS and NPHCs blend ratios in prepared membranes. Membrane potential, permselectivity, transport number and areal membrane resistance all showed decreasing trends by the increase in NPHCs blend ratio in casting solution. These results indicated that the prepared membrane has good prospective and great potential for desalination in electrodialysis applications.
- Subjects :
- Materials science
Scanning electron microscope
General Chemical Engineering
technology, industry, and agriculture
02 engineering and technology
General Chemistry
Electrodialysis
021001 nanoscience & nanotechnology
Contact angle
Membrane
020401 chemical engineering
Chemical engineering
Thermal stability
0204 chemical engineering
Fourier transform infrared spectroscopy
0210 nano-technology
Porosity
Diffractometer
Subjects
Details
- ISSN :
- 19757220 and 02561115
- Volume :
- 35
- Database :
- OpenAIRE
- Journal :
- Korean Journal of Chemical Engineering
- Accession number :
- edsair.doi...........60e25645f67434b89b0fd052c1bc8a69