| abstract |
Cross-linked polymer networks derived from polyaniline and polyaniline derivatives are provided, as well as preparative methods therefor. Also provided are gels comprising cross-linked polymer and a liquid. The cross-linked polymers preferably are prepared by providing a substantially linear polymer which comprises polyaniline and/or a polyaniline derivative, admixing the linear polymer with a liquid in which the cross-linked polymer is substantially insoluble, and cross-linking the polymer through agitation. The cross-linked polymers of the invention can be employed to fabricate shaped articles which reversibly expand and contract in either an isotropic or anisotropic fashion and may find use in gas and/or liquid separations. |