| abstract |
In one aspect, in a method for preparing a composition, the method comprises: forming a solvent mixture comprising a polymer and a solvent; Precipitating the solvent mixture with a non-solvent to form a composition comprising a filler in a fibrillated polymer matrix, wherein the composition is in particulate form and at least one of a solvent and a non-solvent Wherein the step comprises a filler; And separating the composition from the solvent and non-solvent to isolate the composition; Includes. In another aspect, a porous material is disclosed wherein the filler particles are mechanically bonded to each other by a polymer and the polymer connects the filler particles across the interspace between the filler particles and is present as filaments attached to the filler particles. In another aspect, a precipitated polymer solution produced by phase inversion in which most of the liquid can be removed mechanically is disclosed. |