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Use of radiation‐grafted polyethylene in dialysis of low molecular weight metabolites
Author(s) -
Abd ElRehim H A,
Hegazy ElSayed A,
ElHag Ali A
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(199907)48:7<593::aid-pi195>3.0.co;2-0
Subject(s) - grafting , membrane , chemistry , maleic anhydride , polymer chemistry , chromatography , nuclear chemistry , organic chemistry , copolymer , polymer , biochemistry
Radiation‐induced graft copolymerization of styrene/maleic anhydride (Sty/MAn) binary monomers into high‐density polyethylene (HDPE) has been studied. The optimum conditions under which a high grafted yield is obtained and the grafting process proceeds homogeneously have been determined. A suitable solvent for the grafting process is acetone for a (Sty/MAn) composition of (70/30 mol%). The permeability of low molecular weight metabolites (urea, creatinine, uric acid, glucose and phosphate salts) through the untreated and treated grafted HDPE membranes has been studied. The hydrophilicity of the membrane, the degree of grafting and the molecular weight and chemical structure of the metabolites have a great influence on the transport properties of the membrane. For all solutes investigated, the permeability increases with the degree of grafting. The basic metabolites show higher permeation rates through the modified membrane compared with that for the acidic metabolite, especially phosphate salts. The permeabilities of vitamin B 12 , bovine albumin and KCl through the treated grafted membranes have been measured and those of the high molecular weight compounds are low. © 1999 Society of Chemical Industry