| Abstract
| - The carbonization process of novolac resins cured by hexamethylenetetramine (HMTA)in the presence of furfuryl alcohol (FA) was studied by a high-resolution solid-state NMRtechnique. Most reactions occur below 600 °C, and aliphatic species disappear above 800°C. Nitrogen (2−3%) is present in the carbon materials obtained. The process can beinfluenced by the starting novolac structures, ca. the ratio of ortho/para reactive sites, andthe FA content in the systems. When a novolac resin contains a high ratio of para-reactivesites, the carbonization reaction occurs at relatively lower temperatures, and the rate isrelatively fast. High FA content slows down the carbonization process, and reactions occurat relatively high temperatures. Starting novolac structures and FA content in the systemsalso vary the nitrogen structures during the process and the structure distribution in thecarbon materials at 800 °C.
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