Microporous cyanurate networks via chemically induced phase separation

The effects of nonreactive solvents and curing conditions on network formation, phase separation and porosity characterization of poly(cyanurate) are described. The network formation of cyanurate resins on different cyclohexane compositions was observed. No evidence of phase separation at less than 15% cyclohexane occurred during the formation as revealed by scanning electron microscopy (SEM). Furthermore, the melting enthalpy increases with cyclohexane content, consistent with a phase separated structure. The dielectric constants of the microporous cyanate networks decreases with porosity. However, experimental results do not agree with the dielectric constants calculated from the Maxwell-Garnet theory.