Journal
MACROMOLECULAR RESEARCH
Volume 23, Issue 12, Pages 1126-1133Publisher
POLYMER SOC KOREA
DOI: 10.1007/s13233-015-3153-7
Keywords
PVDF-g-PSVBS cation-exchange membrane; annealing temperature; membrane capacitive deionization (MCDI)
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Funding
- National Research Foundation of Korea Grant - Korean Government (MSIP)
- Joint Research Corporations Support Program through National Research Foundation of Korea - Ministry of Science, ICT & Future Planning [2010-0019552]
- Human Resource Training Program for Regional Innovation and Creativity through Ministry of Education
- National Research Foundation of Korea [NRF-2015H1C1A1035652]
- National Research Foundation of Korea [2010-0019552, 2015H1C1A1035652] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this study, a poly(vinylidene fluoride)-graft-sodium 4-vinylbenzene sulfonate copolymer (PVDF-g-PSVBS) was prepared by grafting sodium 4-vinylbenzene sulfonate (SVBS) onto dehydrofluorinated poly(vinylidene fluoride) (PVDF). The PVDF-g-PSVBS cation exchange membranes were prepared using a casting method. The structure of the membranes was investigated with Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy. Morphology using scanning electron microscope with energy-dispersive X-ray analysis (SEM-EDS) demonstrated as increasing the degree of grafting, the sulfur element is uniformly distributed and increased. The effects annealing temperature on the properties of the PVDF-g-PSVBS membranes were investigated. To prepare the consistent and homogeneous membranes, it was suggested that the annealing temperature of PVDF-g-PSVBS membranes is below 60 A degrees C. The salt removal efficiency for application to the membrane capacitive deionization (MCDI) process was conducted.
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