Figure 5
From: Orientation in multi-layer chitosan hydrogel: morphology, mechanism and design principle
Schematic model of layered-oriented CS hydrogel and illustration of formation mechanism.
(a) Schematic model, CLSM images corresponding to compact region, oriented region and porous region, respectively, c(CS) > 1.0 wt.%, scale bar represented 100 μm. (b)–(d) Macromolecular interactions in “gel-sol consecutive reaction units” during the gelation process, (b) semi-dilute regime, (c) concentrated regime and (d) formation of oriented structure by stacking of reaction units.
