Poly(ether–ester)s containing azomethine group in the main chain were synthesized by solution polycondensation of 4,4′-bis(3-hydroxypropyloxy)-N-benzylidene aniline with adipoyl and terephthaloyl diacid chlorides. The synthesized poly(ether–ester)s were characterized by Fourier transform infrared and proton, and carbon-13 nuclear magnetic resonance spectroscopic techniques. Thermal properties were studied using thermogravimetric analysis (TGA) and differential scanning calorimetry. Thermal degradation kinetics of poly(ether–ester)s were characterized by TGA at various heating rates (5°C min−1, 10°C min−1, and 20°C min−1). The apparent activation energy for the degradation of both the polymers was determined by three different non-isothermal model-free kinetics methods (Friedmann, Flynn–Wall Ozawa, and Kissinger–Akahira–Sunose). The photoisomerization property was examined with ultraviolet (UV) spectroscopy, and the polymer PEE1 showed a rate of trans to cis isomerization ranging 10–20 s, whereas reverse process took around 100 min in solution. UV studies suggested that this material may be used in the field of rewritable applications.

中文翻译：

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主链中含有偶氮甲碱部分的聚（醚-酯）的光异构化和热降解动力学

通过 4,4'-双（3-羟基丙氧基）-N-亚苄基苯胺与己二酰和对苯二酰二酰氯的溶液缩聚反应合成了主链中含有偶氮甲碱基团的聚（醚-酯）。合成的聚（醚-酯）通过傅里叶变换红外和质子以及碳 13 核磁共振光谱技术进行表征。使用热重分析 (TGA) 和差示扫描量热法研究了热性能。聚（醚-酯）的热降解动力学通过 TGA 在不同加热速率（5°C min-1、10°C min-1 和 20°C min-1）下进行表征。两种聚合物降解的表观活化能由三种不同的非等温模型动力学方法（Friedmann、Flynn-Wall Ozawa 和 Kissinger-Akahira-Sunose）确定。用紫外 (UV) 光谱检查光异构化性能，聚合物 PEE1 显示出反式到顺式异构化的速率范围为 10-20 秒，而反向过程在溶液中需要大约 100 分钟。紫外线研究表明，这种材料可用于可重写应用领域。