High flux membrane
First Claim
1. A semi-permeable membrane for selective retention of molecules of greater than a pre-selected size, which comprises a macro-porous substrate having a micro-porous microskin permanently deposited thereon, the microskin having a surface of Fractal geometry including means for generating a dynamic layer which is reticulated at the molecular level, including an ordered arrangement of absorption/repulsion sites for said retained molecules of at least three different energy levels, the spacing between the absorption and repulsion sites being of the same order of magnitude as the mean free path of Brownian motion of said retained molecules, wherein the microskin is formed of a desolvated gel comprising a tribasic compound selected so as to provide said at least three different energy levels.
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Abstract
The instant invention provides a semipermeable membrane having a maximized porosity with surface properties providing enhanced flux, and good chemical resistance.
72 Citations
6 Claims
- 1. A semi-permeable membrane for selective retention of molecules of greater than a pre-selected size, which comprises a macro-porous substrate having a micro-porous microskin permanently deposited thereon, the microskin having a surface of Fractal geometry including means for generating a dynamic layer which is reticulated at the molecular level, including an ordered arrangement of absorption/repulsion sites for said retained molecules of at least three different energy levels, the spacing between the absorption and repulsion sites being of the same order of magnitude as the mean free path of Brownian motion of said retained molecules, wherein the microskin is formed of a desolvated gel comprising a tribasic compound selected so as to provide said at least three different energy levels.
Specification
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- Resources
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Current AssigneeSyrinx Research Pty Limited
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Original AssigneeSyrinx Research Pty Limited
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InventorsLefebvre, Michel S. M.
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Primary Examiner(s)Sever, Frank
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Application NumberUS06/817,728Time in Patent Office914 DaysField of Search210/490, 210/500.21, 210/500.25, 210/506, 55/158, 521/27, 428/212, 428/304.4, 428/307.3, 428/315.5US Class Current210/490CPC Class CodesB01D 2323/48 Influencing the pHB01D 2325/08 Patterned membranesB01D 2325/20 Specific permeability or cu...B01D 2325/30 Chemical resistanceB01D 67/0048 by sol-gel transitionB01D 69/12 Composite membranes; Ultra-...B01D 71/02 Inorganic materialB01D 71/0213 Silicon
