PREPARATION AND CHARACTERIZATION OF ION EXCHANGE MEMBRANES BASED ON POLYVINYLIDENE FLUORIDE
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PREPARATION AND CHARACTERIZATION OF ION EXCHANGE MEMBRANES BASED ON POLYVINYLIDENE FLUORIDE
Vol. 22, Issue 6, Pages: 505-510(2004)
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Published:20 December 2004
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Bo Tian, Chuan-wei Yan, Fu-hui Wang. PREPARATION AND CHARACTERIZATION OF ION EXCHANGE MEMBRANES BASED ON POLYVINYLIDENE FLUORIDE[J]. 2004, 22(6): 505-510.
DOI:
Bo Tian, Chuan-wei Yan, Fu-hui Wang. PREPARATION AND CHARACTERIZATION OF ION EXCHANGE MEMBRANES BASED ON POLYVINYLIDENE FLUORIDE[J]. 2004, 22(6): 505-510.DOI:
PREPARATION AND CHARACTERIZATION OF ION EXCHANGE MEMBRANES BASED ON POLYVINYLIDENE FLUORIDE
A new ion exchange membrane based on polyvinylidene fluoride (PVDF) and sulfonated poly(styrene-divinylbenzene) was prepared by in-situ polymerization. The incorporation of sulfonic groups into the polyvinylidene fluoride composite membrane was confirmed by infrared spectroscopy (IR)
ion exchange capacity (IEC) and energy dispersive X-ray analysis (EDAX). Area resistance
IEC and water uptake of the treated membrane were evaluated. When 20% of the crosslinked membrane was sulfonated at 80℃ for 22 h
the PVDF ion exchange membrane can attain 0.8 cm2 area resistance in NaCl aqueous solution at 25℃
IEC is as high as 2.43 millimoles per gram of the wet membrane. The hydrophilicity of PVDF membrane is also significantly improved after treatment. When 60% of crosslinked membrane was sulfonated at 80℃ for 6 h
water uptake of the treated membrane can attain 64.7%.
Abstract
A new ion exchange membrane based on polyvinylidene fluoride (PVDF) and sulfonated poly(styrene-divinylbenzene) was prepared by in-situ polymerization. The incorporation of sulfonic groups into the polyvinylidene fluoride composite membrane was confirmed by infrared spectroscopy (IR)
ion exchange capacity (IEC) and energy dispersive X-ray analysis (EDAX). Area resistance
IEC and water uptake of the treated membrane were evaluated. When 20% of the crosslinked membrane was sulfonated at 80℃ for 22 h
the PVDF ion exchange membrane can attain 0.8 cm2 area resistance in NaCl aqueous solution at 25℃
IEC is as high as 2.43 millimoles per gram of the wet membrane. The hydrophilicity of PVDF membrane is also significantly improved after treatment. When 60% of crosslinked membrane was sulfonated at 80℃ for 6 h
water uptake of the treated membrane can attain 64.7%.
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