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Transport properties of eastman cellulose acetate membranes: Influence of diffusant size and shape on permeability
Author(s) -
Osterhoudt H. W.
Publication year - 1971
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.1971.070150308
Subject(s) - membrane , desalination , cellulose acetate , selectivity , permeability (electromagnetism) , chemistry , chemical engineering , chromatography , cellulose , materials science , polymer chemistry , organic chemistry , biochemistry , engineering , catalysis
Eastman cellulose acetate membranes (acetyl content = 40%) have been studied by means of dialysis rate experiments with uncharged permeants of selected sizes and shapes. The experimental results show that the high flux membranes exert no molecular size or shape selectivity on the transport of permeants whose molecular weights are less than 1152. The membranes used in desalination, however, are selective as to molecular size and shape. Desalination membranes, therefore, may be useful in separations where differences in size and shape are present.