J Shanghai Jiaotong Univ Sci

Journal of shanghai Jiaotong University (Science) ›› 2012, Vol. 17 ›› Issue (6): 701-705.doi: 10.1007/s12204-012-1349-y

• Articles • Previous Articles     Next Articles

Fabrication of a Novel Porous Poly(Vinylidene Fluoride) Blend Five-Bore Membrane for Wastewater Treatment

Fabrication of a Novel Porous Poly(Vinylidene Fluoride) Blend Five-Bore Membrane for Wastewater Treatment

HUANG Jian-ping1,2,3 (黄健平), MA Chun-yan2 (马春燕), XI Dan-li2 (奚旦立), YAN Ke-lu1* (阎克路)   

  1. (1. College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China; 2. School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; 3. Department of Environmental Engineering and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450002, China)
  2. (1. College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China; 2. School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; 3. Department of Environmental Engineering and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450002, China)
  • Online:2012-12-31 Published:2012-12-30
  • Contact: YAN Ke-lu1* (阎克路) E-mail:klyan@dhu.edu.cn

Abstract: Porous poly(vinylidene fluoride) (PVDF)/poly(methyl methacrylate) (PMMA) blend five-bore hollow fiber membranes are prepared by wet phase inversion methods. In spinning these PVDF hollow fibers, N, N-dimethylacetamide (DMAc) and polyvinyl pyrrolidone (PVP) are used as the solvent and the non-solvent additive, respectively. The external coagulant uses water. The internal coagulants use water and DMAc-water solutions. The membranes are characterized in terms of water flux and molecular weight cut-off for the wet membranes. The cross-sectional structures are examined by scanning electron microscopy (SEM). The effects of polymer concentration and the internal coagulant on the permeation properties and membrane structures are examined keeping the bore liquid flow and air-gap constants. Relative high flux, rejection and strengh PVDF five-bore hollow fiber membranes could be prepared from the polymer concentration in dope solution at 17% of mass fraction, the air gap distance of 14 cm, and using 10% of mass fraction of DMAc solution as the internal coagulant at 13mL/min of flow.

Key words: porous poly(vinylidene fluoride) (PVDF)/poly(methyl methacrylate) (PMMA)| five-bore hollow fiber membrane| condition of spinning process

摘要： Porous poly(vinylidene fluoride) (PVDF)/poly(methyl methacrylate) (PMMA) blend five-bore hollow fiber membranes are prepared by wet phase inversion methods. In spinning these PVDF hollow fibers, N, N-dimethylacetamide (DMAc) and polyvinyl pyrrolidone (PVP) are used as the solvent and the non-solvent additive, respectively. The external coagulant uses water. The internal coagulants use water and DMAc-water solutions. The membranes are characterized in terms of water flux and molecular weight cut-off for the wet membranes. The cross-sectional structures are examined by scanning electron microscopy (SEM). The effects of polymer concentration and the internal coagulant on the permeation properties and membrane structures are examined keeping the bore liquid flow and air-gap constants. Relative high flux, rejection and strengh PVDF five-bore hollow fiber membranes could be prepared from the polymer concentration in dope solution at 17% of mass fraction, the air gap distance of 14 cm, and using 10% of mass fraction of DMAc solution as the internal coagulant at 13mL/min of flow.

关键词: porous poly(vinylidene fluoride) (PVDF)/poly(methyl methacrylate) (PMMA)| five-bore hollow fiber membrane| condition of spinning process

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