A novel approach to preparing polymeric materials using elemental sulfur as a feedstock through the newly developed sulfur radical transfer and coupling (SRTC) reaction is reported herein. Polybenzoxazines with high sulfur contents are prepared using the SRTC reaction with benzoxazine compounds as the radical acceptors. The reactions between elemental sulfur and benzoxazine rings are analyzed with Fourier transform infrared (FTIR), ¹H NMR, and ¹³C DEPT spectroscopies to elucidate the SRTC reaction mechanism. Moreover, the prepared polybenzoxazine–sulfur hybrid materials show attractive repairing properties based on the dynamic S–S linkages. An effective reaction mechanism and the prepared repairable sulfur‐possessing polymeric materials are demonstrated.

中文翻译：

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硫自由基转移和偶联反应生成苯并恶嗪基团：一种新的反应路线，以元素硫为原料制备高分子材料

本文报道了一种通过新开发的硫自由基转移和偶联（SRTC）反应使用元素硫作为原料制备聚合物材料的新颖方法。使用与苯并恶嗪化合物作为自由基受体的SRTC反应，可以制备高硫含量的聚苯并恶嗪。用傅立叶变换红外（FTIR），¹ H NMR和¹³ C DEPT光谱分析元素硫与苯并恶嗪环之间的反应，以阐明SRTC反应机理。此外，基于动态S-S键，制备的聚苯并恶嗪-硫杂化材料显示出有吸引力的修复性能。证明了有效的反应机理和制备的可修复的具有硫的聚合物材料。