Thermal Stabilization of Polyoxymethylene by PEG-Functionalized Hydroxyapatite: Examining the Effects of Reduced Formaldehyde Release and Enhanced Bioactivity

Figure 10

SEM images of cryogenically fractured surfaces of POM (a), POM/1.0% HA-g-PEG 600 (b), POM/1.0% HA-g-PEG 2000 (c), POM/1% HA-g-PEG 6000, (d) (mag. ×1000).

(a)

(b)

(c)

(d)