Simultaneous and Gradient IPN of Polyurethane/Vinyl Ester Resin: Morphology and Mechanical Properties

Figure 8

The nitrogen element constitution of surface scans of g-IPN at different parts of layer: (a) 220 𝜇m ∼ 440 𝜇m; (b) 440 𝜇m ∼ 550 𝜇m.

(a)

(b)