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首页> 外文期刊>RSC Advances >Structure-property relationships of aromatic polyamides and polythioamides: comparative consideration with those of analogous polyesters, polythioesters and polydithioesters
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Structure-property relationships of aromatic polyamides and polythioamides: comparative consideration with those of analogous polyesters, polythioesters and polydithioesters

机译：芳族聚酰胺和聚硫酰胺的结构性质关系：与类似聚酯，聚硫酯和聚二硫代酯的比较考虑

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摘要

Conformational characteristics and configurational properties of aromatic polyamides and polythioamides, analogues of common aromatic polyesters such as poly(ethylene terephthalate) and poly(trimethylene terephthalate), have been investigated via NMR experiments and molecular orbital calculations on model compounds, and the refined rotational isomeric state calculations for the polymers. The polyamides and polythioamides were actually synthesized and characterized in terms of solubility, molecular weight, crystallinity, thermal transition, and thermal stability. Herein, the experimental results are discussed mainly from the viewpoint of the conformational characteristics and compared with those obtained from analogous aromatic polyesters, polythioesters, and polydithioesters to reveal the effects of the heteroatoms O, S, and NH included in the backbone on the polymer structures and properties.
机译：通过NMR实验和模型化合物的分子轨道计算，以及精细的旋转异构态，研究了芳族聚酰胺和聚硫酰胺（常见的芳族聚酯，例如聚对苯二甲酸乙二酯和聚对苯二甲酸三亚甲基酯）的类似物的构象特征和构型特性。聚合物的计算。实际上合成了聚酰胺和聚硫酰胺，并根据溶解度，分子量，结晶度，热转变和热稳定性对其进行了表征。在此，主要从构象特性的角度讨论实验结果，并将其与从类似的芳族聚酯，聚硫酯和聚二硫酯获得的结果进行比较，以揭示主链中所含杂原子O，S和NH对聚合物结构的影响。和属性。

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