On Biomimetics by Lilyana Pramatarova

On Biomimetics
64

(A) (B)

(C) (D) (E)

Fig. 7. Computer generated models of the porogen illustrating key features of the injection

molding process. A: Injectable porogen with cylindrical basin for loading molten biomaterial

that is injected through the single injection gate using a syringe plunger; B: Overhead view

shows the single injection gate equal to the largest sized feature in the porogen (250, 300, 400

or 600 μm); C: Cut-out view of resultant scaffold; D: Molten biomaterial injection; E:

Theoretical model of resultant scaffold consisting of pores with the void volume

corresponding to the porogen gate dimension (250 - 600 μm).

(A) (B) (C)

Fig. 8. SEM micrograph of (A) 200 micron pores in an injection molded PCL scaffold (B)

single pore ~ 200 micron. (C) Digital photograph of 90/10 PCL-CaP scaffold (size:

4.24.25.4mm, pore: 600 m).