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Separations with protein liquid crystals
Author(s) -
Kozinski A. A.,
Kizior G. J.,
Wax S. G.
Publication year - 1974
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690200607
Subject(s) - selectivity , liquid crystal , membrane , chemistry , anisotropy , solubility , lyotropic , diffusion , lyotropic liquid crystal , shear (geology) , chemical physics , chromatography , materials science , thermodynamics , organic chemistry , optics , liquid crystalline , composite material , catalysis , biochemistry , physics , optoelectronics
A lyotropic protein liquid crystal was studied experimentally to evaluate its potential as a selective liquid membrane. Concentrated solutions of fibrinogen had nematic like properties under shear and exhibited graded selectivities toward solutes of widely differing sizes when subjected to a two‐dimensional velocity field. The magnitude of the selectivity differences was found to depend on the shear orientated direction of the liquid crystal layer. The selectivity seems to be both a solubility phenomena and a relative diffusion phenomena. These anisotropic layers may have potential as controlled variable selectivity membranes.