POROUS POLYMERIC ARTICLES

摘要

Porous polymeric articles, and more specifically, porous polymeric articles for tissue engineering and organ replacement, are described. In some embodiments, methods described herein include use of a polymer-solvent system (e.g., phase inversion) to generate porosity in a structure. The process may include formation of a structure precursor material including a first crosslinkable component and a second component that can be precipitated in a precipitation medium. The structure precursor material may be shaped into a three-dimensional shape by a suitable technique such as three- dimensional printing. Upon shaping of the structure precursor material, at least a portion of the first component may be crosslinked. The structure may then be contacted with a precipitation medium to remove the precursor solvent from the structure, which can cause the second polymer component to precipitate and form a porous structure containing a network of uniform pores. In some embodiments, the porous structure is constructed and arranged for use as a template for ultrafiltration, cell growth, and/or for forming complex, biomimetic, porous biohybrid organs, where living cells can be immobilized and perform their normal physiological functions.