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Surface‐modified polysulfone hollow fibers
Author(s) -
Higuchi Akon,
Iwata Noboru,
Tsubaki Masayuki,
Nakagawa Tsutomu
Publication year - 1988
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.1988.070360804
Subject(s) - polysulfone , polyethylene glycol , polyethylene , aqueous solution , materials science , polymer chemistry , ultrafiltration (renal) , propane , composite material , chemical engineering , chemistry , polymer , organic chemistry , chromatography , engineering
Abstract Controlled reactions on the inner side, outer side, and both sides of the surfaces of polysulfone ultrafiltration hollow fibers with propane sultone and Friedel‐Crafts catalysts were developed. EPMA measurements and MTR spectra for the chemically modified fibers suggested existence of CH 2 CH 2 CH 2 SO 3 − segments on the modified surfaces. The modified fibers were found to have smaller molecular weight cut‐off than nonmodified fibers, and the fibers modified on the internal surfaces gave better rejection of polyethylene glycol 6000 than those modified on the external surfaces, although the fibers that reacted with solution of the propane sultone and SnCl 4 at 70°C and 80°C showed negative rejection of the polyethylene gylcol. Absorption of polyethylene glycol on the modified fibers is estimated to be less than the nonmodified fibers from the flux ratios of aqueous polyethylene glycol solution to pure water. This effect is attributed to the heparinlike active group of modified segments.