A comprehensive study of benzoxazines derived from magnolol and five different substituted aniline moieties through Mannich condensation was carried out. The structural confirmation was ascertained using different spectral analyses. Mg-a exhibited a lowest polymerization temperature of 220 °C than that of other monomers. Whereas, poly (Mg-ea) showed relatively the higher initial thermal stability until 411 °C with char yield of 56 % at 850 °C and enhanced values of limiting oxygen index (LOI) and statistic heat resistance index (HRI) than rest of polybenzoxazines. The Mg-pfa benzoxazine monomer exhibits significant antibacterial behavior with a maximum of 22 mm zone of inhibition and less cytotoxicity with IC50 value of 162 μg/ml as well as better corrosion resistant properties with 99 % corrosion inhibition efficiency. The hydrophobic studies indicated that poly (Mg-tfa) exhibited the highest water contact angle (CA) value of 143°. Poly (Mg-tfa) coated cotton fabric was resistant to chemical and UV treatments along with the 97 % of oil water separating efficiency. Polybenzoxazine composites were derived from poly (Mg-fa) matrix and cashew nut shell residue ash (CNA) and cashew nut shell carbon (CNC) fillers to ascertain influence on thermal, dielectric and hydrophobic properties. Poly (Mg-fa) composites reinforced with 15 wt% of CNA and 15 wt% of CNC exhibited dielectric constant values of 2.71 and 6.91 respectively at a frequency of 1 MHz. Findings from multifaceted studies indicate that the polybenzoxazines and composites reported in the present work can be utilized for anti-corrosion, anti-microbial, oil-water separation and electronic applications for improved performance and enhanced longevity.

中文翻译：

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含有苯胺衍生物的仿生可持续苯并恶嗪基复合材料：抗菌、高级涂料、油水分离和电子利用的综合研究


对木兰醇和通过 Mannich 缩合法衍生的五种不同的取代苯胺部分的苯并恶嗪进行了全面研究。使用不同的光谱分析确定结构确认。Mg-a 的聚合温度最低，为 220 °C，高于其他单体。而聚苯并恶嗪在 411 °C 之前表现出相对较高的初始热稳定性，在 850 °C 时的炭化率为 56%，极限氧指数 （LOI） 和统计耐热指数 （HRI） 的值高于其他聚苯并恶嗪。Mg-pfa 苯并恶嗪单体表现出显着的抗菌行为，最大抑制区为 22 mm，细胞毒性较小，IC50 值为 162 μg/ml，以及更好的耐腐蚀性能，腐蚀抑制效率为 99%。疏水研究表明，聚 （Mg-tfa） 表现出最高的水接触角 （CA） 值，为 143°。涤纶 （Mg-tfa） 涂层棉织物耐化学和紫外线处理，油水分离效率高达 97%。聚苯并恶嗪复合材料来源于聚 （Mg-fa） 基体和腰果壳残渣灰分 （CNA） 和腰果壳碳 （CNC） 填料，以确定对热、介电和疏水性能的影响。用 15 wt% 的 CNA 和 15 wt% 的 CNC 增强的聚乙烯 （Mg-fa） 复合材料在 2.71 MHz 的频率下分别表现出 6.91 和 1 的介电常数值。多方面研究的结果表明，本研究中报道的聚苯并恶嗪和复合材料可用于防腐蚀、抗菌、油水分离和电子应用，以提高性能并延长使用寿命。