Synthesis of porous materials by 2‐nitroresorcinol/cyanuric chloride thermal polycondensation in emulsions

Abstract

Abstract Rigid monoliths were prepared from concentrated oil in water (O/W) emulsions by a base‐catalyzed polycondensation reaction of 2‐nitroresorcinol with cyanuric chloride. Mercury intrusion/extrusion porosimetry confirmed that the obtained monoliths were porous with an open porosity. However, scanning electron microscopy showed that the structure of these materials was different from that of emulsion‐derived materials previously described in the literature [polymerized high internal phase emulsions (polyHIPEs)]. In comparison with polystyrene/divinylbenzene‐based polyHIPEs obtained by radical polymerization, these materials exhibited a higher skeletal density, and thermogravimetric analysis and differential scanning calorimetry analysis indicated that they were more thermally stable. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008