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Preparation and permeability of solutes through acrylic acid‐ g ‐methylcellulose copolymer membranes
Author(s) -
Huh Hoon,
Lee Soon Hong,
Lee Young Moo,
Kim Kea Yong,
Kim Jin Il
Publication year - 1993
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.1993.070470519
Subject(s) - membrane , copolymer , solvent , permeation , aqueous solution , acrylic acid , polymer chemistry , acetone , swelling , permeability (electromagnetism) , ultimate tensile strength , materials science , chemistry , chemical engineering , nuclear chemistry , organic chemistry , composite material , polymer , biochemistry , engineering
Graft copolymer membranes from the methylcellulose and the acrylic acid were prepared and their properties and the permeability of four solutes were estimated. Acrylic acid‐ g ‐methylcellulose (AA‐ g ‐MC) copolymer dissolved in aqueous acetone solvent was cast to prepare membranes followed by the subsequent crosslinking either with aluminium potassium sulfate or by the thermal‐curing method. The equilibrium water content in the membrane increased with the volume fraction of acetone in the aqueous acetone solvent system. Membrane, the ionically crosslinked with the aluminum potassium sulfate, showed the water content in the range of 38.5 and 58.4% and 0.25–0.33 kg/mm 2 of the tensile strength in the wet state. Compared with ionically crosslinked membranes, thermally dried membranes exhibited a more dense structure, resulting in lower water contents and higher mechanical strength. Experimental results on the permeation of four small and midsize solutes through the graft copolymer membranes revealed the molecular weight dependence of the permeability coefficient. The higher the degree of swelling, the greater the permeability coefficient. Ionically crosslinked membranes had higher solute permeability than the commercial Cuprophane membrane had. © 1993 John Wiley & Sons, Inc.