Phase inversion (chemistry) Phase inversion (chemistry) Phase inversion is a chemical phenomenon exploited in the fabrication of artificial membranes. It is performed by removing the solvent from a liquid-polymer solution, leaving a porous, solid membrane. Phase inversion is a common method to form filtration membranes, which are typically formed using artificial polymers. The method of phase inversion is highly dependent on the type of polymer used and the solvent used to dissolve the polymer. Phase inversion can be carried out through one of four typical methods: The rate at which phase inversion occurs and the characteristics of the resulting membrane are dependent on
Lines Composed in a Wood on a Windy Day five and nine, as well as the erasures before "sunshine" and "above" suggest that the poem was written hastily. One interpretation by Winidred Gerin says that in the poem "emotion and expression have achieved a fusion as felicitous as it is rare in Brontë's writing, is probably the best poem she ever wrote, though not the most characteristic". The poem is based upon an actual experience of Brontë's. A note stating "Composed in the Long-Plantation on a wild bright windy day", was written in Anne Brontë's hand at the bottom of the manuscript and the "Long-Plantation" was identified by Edward