Development of Chemical Resistance Hollow Fiber Microfiltration Membrane Using Poly(Ethylene Chlorotrifluoroethylene)
- 作者：Dae-Hoon KimHyung-Mo YangHyun-Chul Hu
- 会议时间：2012-06-26
- 关键词：Poly(Ethylene Chlorotrifluoroethylene) ; Waste water treatment ; Non-solvent induced phase separation ; Chemical resistance membrane ; Hollow fiber membrane
- 作者单位：R&D Institute, Woongin Chemical Co., Ltd., Suwon 443-270, Korea
- 母体文献：2012青岛国际脱盐大会论文集
- 会议名称：2012青岛国际脱盐大会
- 会议地点：青岛
- 主办单位：中国金属学会
- 语种：chi
- 分类号：R57;X13
摘要
The majority of water filtration membranes are produced from fairly robust engineering polymers like PVDF and polymers of the polysulfone family (PSf/PES). Chemical properties such as oxidation resistance and long time stability in water are generally sufficient for most applications in water filtration. However, in some cases, the chemical stability of these polymers is insufficient.Poly(ethylene chlorotrifluoroethylene) (ECTFE) is a copolymer of ethylene and chlorotrifluoroethylene that has greater chemical and wear resistance than most other fluorinated polymers with an excellent combination of chemical and mechanical properties. In addition, ECTFE has good thermal stability as evidenced by a relatively high continuous use temperature more than 150℃. These attractive chemical, physical and mechanical properties make ECTFE a very desirable polymer for membrane applications.In this study, ECTFE hollow fiber micro-filtration membrane was fabricated by the non-solvent induced phase separation method. ECTFE membranes were characterized via scanning electron microscopy (SEM), pore size distribution, tensile strength, chemical resistance with pH and pure water permeation. These results indicated that membranes have asymmetric structure with continuous pores and narrow pore distribution having diameters in the microfiltration range (0.1 um) could be reliably fabricated.