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首页> 外文期刊>Polymers for advanced technologies >Synthesis and properties of novel polytriazoleimides derived from 1,2,3-triazolecontaining diamines and aromatic dianhydrides
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Synthesis and properties of novel polytriazoleimides derived from 1,2,3-triazolecontaining diamines and aromatic dianhydrides

机译：含1,2,3-三唑的二胺和芳香族二酐衍生的新型聚三唑酰亚胺的合成与性能

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摘要

A new kind of 1,2,3-triazole-containing aromatic diamines were synthesized by the Cu(I)-catalyzed 1,3-dipolar cycloaddition reaction. These diamines were employed to synthesize a series of novel polytriazoleimides (PTAIs) by polycondensation with various aromatic dianhydrides in N,N‐dimethylacetamide (DMAc) via the conventional two‐step method. The obtained polyimides were characterized by Fourier transform infrared, hydrogen‐1 nuclear magnetic resonance, X‐ray diffraction, differential scanning calorimetry, and thermogravimetric analysis techniques. The results show that the PTAIs are soluble in most of strong polar solvents and have inherent viscosity values of 0.47-0.68 dl/g (DMAc). PTAI films have tensile strengths of 60.6-102.6MPa and elongations at breakage of 3.0-4.1%, glass transition temperatures (T_g) of 208-262℃, and decomposition temperatures (at 5% weight loss) of 368-401℃ in N_2 atmosphere, which depend on the structure of the polymers. The PTAIs also exhibit good adhesion to copper and gas separation properties.
机译：通过Cu（I）催化的1,3-偶极环加成反应合成了一种新型的含1,2,3-三唑的芳族二胺。这些二胺通过常规的两步法，通过与各种芳香族二酐在N，N-二甲基乙酰胺（DMAc）中进行缩聚反应，合成了一系列新型的聚三唑酰亚胺（PTAI）。通过傅立叶变换红外光谱，氢-1核磁共振，X射线衍射，差示扫描量热法和热重分析技术对所得的聚酰亚胺进行表征。结果表明，PTAIs可溶于大多数强极性溶剂中，特性粘度值为0.47-0.68 dl / g（DMAc）。 PTAI薄膜在N_2气氛中的抗张强度为60.6-102.6MPa，断裂伸长率为3.0-4.1％，玻璃化转变温度（T_g）为208-262℃，分解温度（失重5％时）为368-401℃。 ，这取决于聚合物的结构。 PTAI对铜和气体的分离性能也显示出良好的附着力。

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