Importance of the rheological properties of resorcinol–formaldehyde sols in the preparation of Cu-doped organic and carbon xerogel microspheres

The rheological properties of resorcinol–formaldehyde sols at the very beginning of the emulsion polymerization process have a profound impact on the final shape of the microparticles obtained. This is especially the case with Cu-doped organic hydrogels at reasonably large temperatures (40 °C), when an abrupt increase in viscoelastic properties is observed within only a few minutes.