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Synthesis of permselective membranes by radiation‐induced grafting of N ‐vinylpyrrolidone onto poly(tetrafluoroethylene–hexafluoropropylene–vinylidene fluoride) (TFB) films
Author(s) -
Dessouki AM,
Taher NH,
ElArnaouty MB
Publication year - 1999
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199902)48:2<92::aid-pi100>3.0.co;2-3
Subject(s) - hexafluoropropylene , tetrafluoroethylene , grafting , monomer , materials science , polymer chemistry , chemical engineering , membrane , swelling , fluoride , scanning electron microscope , polyvinylidene fluoride , polymer , chemistry , composite material , copolymer , inorganic chemistry , biochemistry , engineering
The radiation initiated grafting of N ‐vinylpyrrolidone (NVP) onto poly(tetrafluoroethylene–hexafluoropropylene–vinylidene fluoride) (TFB) films has been investigated using a direct radiation technique. Different solvents were used for diluting the monomer, and it was found that dioxane is suitable for this grafting system. The influence of other grafting parameters, such as inhibitor, monomer concentration and dose rate, on the rate and yield of grafting was studied. The dependence of the grafting rate on the monomer concentration was found to be of the 1.1 order. Some physicochemical properties, such as swelling, thermal behaviour, mechanical and electrical conductivity, were investigated. A study was made to gain a better understanding of the observed water uptake using IR spectroscopy and scanning electron microscope (SEM) analysis. The possibility of some practical uses, e.g. removal of heavy metals from solution by grafted membranes was investigated. © 1999 Society of Chemical Industry