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Preparation of PVDF/CaCO 3 composite hollow fiber membrane via a thermally induced phase separation method
Author(s) -
Pan Bingjie,
Zhu Lei,
Li Xianfeng
Publication year - 2013
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22532
Subject(s) - materials science , composite material , composite number , polyvinylidene fluoride , porosity , breakage , membrane , crystallization , spinning , fiber , permeability (electromagnetism) , phase (matter) , chemical engineering , polymer , chemistry , genetics , organic chemistry , biology , engineering
The spinnabiliy of polyvinylidene fluoride (PVDF)/CaCO 3 microparticle dope solution were explored via a thermally induced phase separation process, and composite hollow fiber (CHF) membranes were prepared successfully. The experiment results showed that the self‐supporting property of CHF got improved after adding CaCO 3 at low concentration of PVDF, so the control of spinning process became easy. The effects of CaCO 3 on the structure and properties of hollow fiber membrane were investigated in terms of morphology, water flux, porosity, breakage strength, and crystallization. The results indicated that CHF presented a uniform bicontinuous structure. The permeability and porosity of CHF increased obviously when CaCO 3 was removed by acid, while the breakage strength decreased slightly. CHF presented a good drying stability. POLYM. COMPOS., 34:1204–1210, 2013. © 2013 Society of Plastics Engineers