Abstract

Microporous three-dimensional polyphenylenes with phentriyl branching moieties are synthesized by the trimerization polycyclocondensation of p-diacetylbenzene followed by additional heat treatment at 450°C. The structure of the polymers is studied by IR spectroscopy and the methods of thermal desorption of argon and low-temperature sorption of nitrogen. The volume of micropores amounts to more than 70% of the total pore volume. Calculations of the parameters of the microporous structure using the Dubinin–Radushkevich and Dubinin–Astakhov methods show that the average micropore size in the test sample is 1 nm. The surface of all pores, as calculated by various methods, is in the range from 470 to 980 m²/g. According to the TGA data, the polymer shows high heat resistance: when heated in an inert medium, its mass losses does not exceed 20% in the range of 200–900°C.

中文翻译：

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对-二乙酰基苯与苯基-1,3,5-三烷基支化基团的聚亚苯基：孔隙率和耐热性的合成及研究

摘要

通过对二乙酰基苯的三聚缩聚反应，然后在450°C下进行额外的热处理，可以合成具有苯三酰基支化基团的微孔三维聚苯撑。通过红外光谱和氩气热脱附和氮的低温吸附的方法研究了聚合物的结构。微孔的体积占总孔体积的70％以上。使用Dubinin–Radushkevich和Dubinin–Astakhov方法计算微孔结构的参数表明，测试样品的平均微孔尺寸为1 nm。通过各种方法计算，所有孔的表面范围为470至980 m ²/G。根据TGA数据，该聚合物表现出较高的耐热性：在惰性介质中加热时，其质量损失在200-900°C的范围内不超过20％。