Add time:09/09/2019         Source:sciencedirect.com

This work concerns the investigation of porous polybenzoxazines based on the non-toxic renewable Diphenolic acid (cas 126-00-1). The approach described relies on the in situ generation of foaming agent (CO2) during the thermal curing. For this purpose, the previously synthesized benzoxazine monomer from diphenolic acid was thermally polymerized at different temperatures. As the beginning of decarboxylation is about 200 °C, we selected five foaming temperatures (Tf) ranging from 190 to 230 °C. The influence of the foaming temperature on the cellular structure and its dependency on final properties is discussed.

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