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Nylon 4/PVA blend membrane for dialysis
Author(s) -
Lai J. Y.,
Chen Y. C.,
Hsu K. Y.
Publication year - 1991
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.1991.070431003
Subject(s) - vinyl alcohol , casting , formic acid , materials science , nylon 6 , membrane , solvent , chemical engineering , urea , aqueous solution , polymer chemistry , thermal diffusivity , composite material , chemistry , chromatography , polymer , organic chemistry , biochemistry , physics , quantum mechanics , engineering
To improve the hydrophilicity and enhance the transport flux of nylon 4 membrane for dialysis, this study attempts to utilize blending nylon 4 with poly(vinyl alcohol) (PVA). The instability of PVA in water can be obtained more easily than by other methods, such as chemical, γ‐ray irradiated crosslinking, or high‐temperature treatment used by previous researchers. The effects of maturation time of the casting solution, nylon 4/PVA ratios, and casting solvent compositions on esterification of PVA, salt permeability, water content, partition coefficient, diffusivity, and mechanical strength of membrances are studied. The membrane, prepared by casting solution of nylon 4/PVA = 9/1 wt % formic acid with 24‐h maturation time, possesses permeabilities of NaCl and urea, 33.14 and 19.67 × 10 −5 cm 2 /min, respectively.