一种新型双噻唑基团共轭聚合物的合成、表征及其热分解动力学

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-11-28 DOI:10.20450/mjcce.2020.2025

A. Kurt, H. Andan, M. Koca

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引用次数: 1

摘要

以2,2′-二氨基-4,4′-双噻唑和对苯二醛为原料，在冰醋酸存在下缩聚制备了一种新的含双噻唑基团的共轭聚合物。通过热重分析研究了不同升温速率下新型聚合物的热降解动力学。随着升温速率的增加，最大速率损失对应的温度向更高的温度移动。采用Flynn-Wall-Ozawa和Kissinger方法，在转化率为3 ~ 15%范围内，共轭聚合物的热分解活化能分别为288.4和281.1 kJ/mol。Horowitz-Metzger方法表明，共轭聚合物的热降解机制是三维扩散型减速三维机制。最佳升温速率为20℃/min。

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Synthesis and characterization of a new conjugated polymer containing bithiazole group and its thermal decomposition kinetics

A new conjugated polymer containing a bithiazole group is prepared by the polycondensation of 2,2'-diamino-4,4'-bithiazole and terephthaldialdehyde in the presence of glacial acetic acid. The kinetics of thermal degradation of the new polymer are investigated by thermogravimetric analysis at different heating rates. The temperature corresponding to the maximum rate loss shifts to higher temperatures with increasing heating rate. The thermal decomposition activation energies of the conjugated polymer in a conversion range of 3–15 % are 288.4 and 281.1 kJ/mol by the Flynn–Wall–Ozawa and Kissinger methods, respectively. The Horowitz–Metzger method shows that the thermodegradation mechanism of the conjugated polymer proceeds over a three-dimensional diffusion type deceleration D 3 mechanism. The optimum heating rate is 20 oC/min.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.