Figure 1.

Generation of a polypyrrole-chitosan hydrogel. (A) Pyrrole monomers were added to a chitosan (CHI) solution to create polypyrrole-chitosan (PPY:CHI) polymers. These polymers were then cross-linked by the addition of glutaraldehyde in order to create hydrogels. (B) Hydrogel gelation speed was altered by the amount of glutaraldehyde added. To achieve a similar gelation speed of both CHI and PPY:CHI, a final concentration of 0.004% and 0.04% glutaraldehyde was added to CHI and PPY:CHI, respectively (n = 4). (C) Polymer hydrogels were semi-rigid yet remained flexible enough to coat cell culture dishes. Data are shown as mean ± SEM.