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Phase inversion membranes are typically characterized by their mean pore diameter and pore diameter distribution. This can be measured using a number of established analytical techniques such as the analysis of gas adsorption-desorption isotherms, porosimetry, or more niche approaches such as
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The rate at which phase inversion occurs and the characteristics of the resulting membrane are dependent on several factors, including:
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is when the dispersed phase becomes the dispersion medium and the dispersion medium becomes the dispersed phase, for example when
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49:. The method of phase inversion is highly dependent on the type of polymer used and the solvent used to dissolve the polymer.
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Krantz, William.B.; Greenberg, Alan.R. (September 1977). "The formation mechanism of phase inversion membranes".
204:"Recent advances in the formation of phase inversion membranes made from amorphous or semi-crystalline polymers"
37:. It is performed by removing the solvent from a liquid-polymer solution, leaving a porous, solid membrane.
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Phase inversion is a common method to form filtration membranes, which are typically formed using
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can be used for all membrane types, including small pore membranes such as
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Phase inversion can be carried out through one of four typical methods:
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can be used to characterize membranes with larger pore sizes, such as
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Evaporating the solvent in atmospheric air or at high temperature
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is a chemical phenomenon exploited in the fabrication of
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Exposing the polymer solution to a vapor of anti-solvent
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59:Immersing the polymer solution into anti-solvent
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76:Insolubility of the polymer in the anti-solvent
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73:Solubility of solvent in the anti-solvent
56:Reducing the temperature of the solution
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107:Transmission electron microscopy (TEM)
202:Strathmann, H.; Kock, K. (May 1996).
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95:Scanning electron microscope (SEM)
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79:Temperature of the anti-solvent
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247:10.1016/s0011-9164(00)88244-2
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220:10.1016/0376-7388(95)00256-1
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208:Journal of Membrane Science
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16:Phase Inversion (CHEMISTRY)
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158:List of synthetic polymers
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183:Hollow fiber membrane
35:artificial membranes
19:For other uses, see
47:artificial polymers
267:Polymer chemistry
105:membranes, while
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84:Characterization
31:phase separation
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178:Reverse Osmosis
168:Ultrafiltration
163:Microfiltration
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132:phase inversion
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115:reverse osmosis
103:ultrafiltration
99:microfiltration
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27:Phase inversion
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21:Phase inversion
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241:(3): 241–255.
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173:Nanofiltration
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111:nanofiltration
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121:In emulsions
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189:References
128:emulsions
261:Category
153:Membrane
147:See also
138:becomes
41:Process
140:butter
136:cream
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