Abstract Renewable materials are abundantly available in nature and have the capability to degrade within a short period of time. In the present study, a novel class of chitosan-based polybenzoxazine has been synthesized for the first time. Water, an edible solvent was used for the benzoxazine synthesis, adopting moderate reaction temperature. This bio-based benzoxazine monomer was crosslinked by thermal treatment via ring-opening polymerization to form free-standing polymer films [poly(E-Ch)] without the evolution of volatiles. Hydrogen bonding interactions were found to exist between chitosan and polybenzoxazine. This type of interactions significantly enhance the thermal and mechanical properties with T10 of about 260 °C; e′ of about 3.6 GPa; and Tg of about 135 °C showing unusual levels of synergism. Interestingly, both the bio-films-poly(E-Ch) and CH do not affect the cell growth. In particular, poly(E-Ch) is effective in preventing bio-film associted infections.

中文翻译：

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生物基聚苯并恶嗪薄膜的可持续性和抗菌性评估

摘要 可再生材料在自然界中有着丰富的资源，并且具有在短时间内降解的能力。在本研究中，首次合成了一类新型壳聚糖基聚苯并恶嗪。苯并恶嗪的合成采用食用溶剂水，反应温度适中。这种生物基苯并恶嗪单体通过热处理通过开环聚合进行交联，形成独立的聚合物薄膜 [poly(E-Ch)]，而不会产生挥发物。发现壳聚糖和聚苯并恶嗪之间存在氢键相互作用。这种类型的相互作用显着提高了热性能和机械性能，T10 约为 260 °C；e' 约为 3.6 GPa；和约 135 °C 的 Tg 显示出异常水平的协同作用。有趣的是，生物膜-poly(E-Ch) 和 CH 都不影响细胞生长。特别是，poly(E-Ch) 可有效预防生物膜相关感染。