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Permeability through cellulose membranes grafted with vinyl monomers in a homogeneous system. VIII. N ‐vinylpyrrolidone‐grafted cellulose membranes
Author(s) -
Nishioka Noboru,
Tsuetaki Motoji,
Kato Ryoichi,
Uno Masakuni
Publication year - 1994
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.1994.070520714
Subject(s) - membrane , cellulose , permeation , polymer chemistry , monomer , chemistry , chemical engineering , grafting , regenerated cellulose , solvent , permeability (electromagnetism) , materials science , organic chemistry , polymer , biochemistry , engineering
The homogeneous grafting of N ‐vinylpyrrolidone (NVP) onto cellulose was carried out in a dimethyl sulfoxide/paraformaldehyde (DMSO/PF) solvent system. The diffusive permeabilities of solutes through the NVP‐grafted cellulose membranes, apparent activation energy for solute permeation through them, states of water in them, and their microphaseseparated structures were investigated. The solute permeability through the grafted membranes was superior to that through the cellulose membrane cast from the DMSO/PF solution of cellulose. The total water and nonfreezing water contents of the grafted membranes were larger than those of the cellulose membrane. The difference in permeability through the membranes was not correlated quantitatively with the amount of each state of water in them. Activation energies for permeation of solutes through the grafted membranes were similar to those through the cellulose membrane. © 1994 John Wiley & Sons, Inc.