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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and Characterization of Aromatic-Aliphatic Polyamides
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Synthesis and Characterization of Aromatic-Aliphatic Polyamides

机译：芳香脂族聚酰胺的合成与表征

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摘要

A new monomer, 2,5-bis(4-carboxy methylene phenyl)-3,4-diphenyl thio- phene (V) has been synthesized and characterized by physical and spectroscopic meth- ods. A series of eight aromatic-aliphatic polyamides was prepared from the (V) and different aromatic diamine,9 using Yamazaki's direct phosphorylation reaction. The polyamides were characterized by IR spectroscopy, viscosity measurements, and ther- mal analysis. An excellent yield of these polyamides was obtained, with inherent viscosities in the range of 0;28 to 0.67 dUg, and the polyamide were readily soluble in aprotic polar solvents such as N-methyl-2-pyrr6Iidone, N-N-dimethyl acetamide, di- methyl sulphoxide, and so forth. Polyamides could be cast into transparent and flexible films. They hadglass-transition temperatures of 225-273°C. When evaluated by ther- mogravimetry, thermal analysis of the polyamides showed no weight loss below 311°C, and the char yield in air at 900°C was 55%-67.%. The structure-property correlation among these polyamides is also discussed.
机译：合成了一种新的单体2,5-双（4-羧基亚甲基苯基）-3,4-二苯基噻吩（V），并通过物理和光谱方法对其进行了表征。使用山崎的直接磷酸化反应，由（V）和不同的芳族二胺9制备了一系列八种芳族脂肪族聚酰胺。通过红外光谱，粘度测量和热分析对聚酰胺进行表征。这些聚酰胺具有优异的收率，固有粘度在0; 28至0.67 dUg范围内，并且聚酰胺易于溶于非质子极性溶剂中，例如N-甲基-2-pyrr6Iidone，NN-二甲基乙酰胺，二-甲基亚砜，等等。可以将聚酰胺浇铸成透明且柔性的膜。他们的玻璃化转变温度为225-273°C。当通过热重法评估时，聚酰胺的热分析表明在311°C以下没有重量损失，在900°C的空气中焦炭产率为55％-67。％。还讨论了这些聚酰胺之间的结构性质相关性。

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