Free Radical Shadow Cure Initiated Using Two-Component and Three-Component Initiator Systems

Figure 2

Schematic of the experimental geometry for the shadow cure studies. The mask was a 500 μm thick steel plate with a 6 mm diameter hole through which the monomer mixture was illuminated from above. After illumination of the prescribed duration, Raman microscopy was used to collect line (𝑥-direction) and depth (𝑧-direction) conversion profiles through the quartz cover slip on the bottom of the sample.