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Preparation and properties of poly(tetrafluoroethylene)/calcium carbonate hybrid porous membranes
Author(s) -
Huang Qinglin,
Xiao Changfa,
Hu Xiaoyu
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.35588
Subject(s) - membrane , tetrafluoroethylene , materials science , porosity , chemical engineering , calcium carbonate , scanning electron microscope , polyvinyl alcohol , polymer , polymer chemistry , contact angle , emulsion , composite material , copolymer , chemistry , biochemistry , engineering
Poly(tetrafluoroethylene) (PTFE)/calcium carbonate (CaCO 3 ) hybrid porous membranes were prepared from a mixture of PTFE emulsion and nanoscale CaCO 3 particles by using polyvinyl alcohol as the fiber forming polymer. The interfacial microvoids (IFMs) were obtained owing to the different mechanical properties of PTFE and CaCO 3 . Effects of CaCO 3 contents and membrane draw ratios on membranes structure and properties were investigated. Results showed that: (1) as the CaCO 3 content increase, the membrane hydrophobicity improved owing to the increasing of membranes surface roughness, (2) the membrane porosity and pure water flux increased as the CaCO 3 content and membrane draw ratios increasing. By the membrane morphology configuration with scanning electron microscopy, it was found that the IFMs quantity and pore size improved obviously with the draw ratios increasing. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012