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Synthesis and characterization of heterocyclic core-based polybenzoxazine matrices

机译：杂环核基聚苯苯并恶嗪基质的合成与表征

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In the present work, four types of heterocyclic core-based polybenzoxazine matrices (HC-PBZ) developed based on pyridine, thiophene, and thiazole and their molecular structure, thermal, flame-retardant and luminescent properties were studied and discussed. The heterocyclic core-based benzoxazine monomers (HC-BZ) were synthesized using two types of phenols (phenol, and 4-hydroxyphenylacetonitrile), and two types of heterocyclic diamines [2,6-Bis-(4-aminophenyl)-4-thiophen-2-yl-pyridine (BATP) and 4-(2-methylthiazol-5-yl)-2,6-bis-(4-aminophenyl)-pyridine (BAMTP)] with formaldehyde through Mannich reaction. The structure of the four HC-BZ monomers was confirmed by various spectral analysis such as Fourier-transform infrared spectroscopy (FTIR), and Nuclear magnetic resonance spectroscopy ((HNMR)-H-1 and (CNMR)-C-13). All the four HC-BZ monomers have the maximum range of curing temperature (T-p) between 252 and 267 degrees C. Data resulted from the thermal studies indicate that the HC-PBZ exhibits better T-g,T- thermal stability and flame-retardant properties. Among the four HC-PBZ systems the thiazole based system possesses the higher value of T-g of 268 degrees C and thermal stability when compared to those of other matrices. It was also observed that the HC-BZ monomers and HC-PBZ polymers exhibit a photoluminescent (PL) emission range between 441-445 and 414-417nm, respectively. Overall, it seems that the thiazole and thiophene based HC-PBZ can be considered as competitive materials for luminescent applications with high thermal and flame-retardant properties. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47134.
机译：在本作研究中，研究并讨论了基于吡啶，噻吩和噻唑和它们的分子结构开发的四种类型的杂环核基聚苯胺基质（HC-PBZ），并讨论了热，阻燃剂和发光性能。使用两种类型的酚（苯酚和4-羟基苯乙酸）合成杂环基核的苯并恶嗪单体（HC-BZ），以及两种类型的杂环二胺[2,6-双 - （4-氨基苯基）-4-噻吩 - 用甲醛反应用甲醛反应，-2-基吡啶（BATP）和4-（2-甲基噻唑-5-基）-2,6-双 - （4-氨基苯基） - 吡啶（BAMTP）]。四个HC-BZ单体的结构经各种谱分析，例如傅里叶变换红外光谱（FTIR）和核磁共振光谱（（HNMR）-H-1和（CNMR）-C-13）。所有四种HC-BZ单体的固化温度（T-P）的最大范围为252和267℃。由热学研究产生的数据表明HC-PBZ表现出更好的T-G，T-热稳定性和阻燃性能。在四种HC-PBZ系统中，与其他基质相比，噻唑基的系统具有268℃的T-G值越高，热稳定性。还观察到的是，HC-BZ单体和HC-PBZ聚合物分别表现出441-445和414-417nm之间的光致发光（PL）发射范围。总体而言，似乎噻唑和噻吩基的HC-PBZ可以被认为是具有高热和阻燃性能的发光应用的竞争材料。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47134。

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