Liu Chenchen, Liu Shuning, Lin Jian, Wang Lingling, Huang Yumin, Liu Xiaobo
Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China.
Polymers (Basel). 2019 Jul 3;11(7):1135. doi: 10.3390/polym11071135.
Poly(arylene ether nitrile)s with sulfonic and carboxylic groups (SCPEN) were synthesized to investigate their electrical properties. This new series of copolymers were prepared by copolymerization of phenolphthalein, potassium hydroquinonesulfonate, and 2,6-difluorobenzonitrile, in different mole ratios. Their thermal, mechanical and dielectric properties were investigated in detail. By adjusting the composition of sulfonic and carboxylic groups, it can be concluded that the dielectric constant increases with the increase of sulfonic groups, and mechanical and thermal properties improve with the increase of carboxylic groups. The as-prepared SCPEN films show potential applications in electronic storage materials, which provide insights into the correlation of SCPEN electrical properties with its chemical structure. The structure-property relationship is established to broaden the application of functionalized PEN. Furthermore, SCPEN with rich polar groups may also be used as the polymer matrix to increase the interaction with the filler surface, ensuring a better dispersion of filler in the matrix. This provides a reference for the development of high dielectric materials.
合成了具有磺酸基和羧基的聚（亚芳基醚腈）（SCPEN）以研究其电学性能。通过将酚酞、对苯二酚磺酸钾和2,6-二氟苯腈按不同摩尔比共聚制备了这一系列新型共聚物。详细研究了它们的热性能、力学性能和介电性能。通过调整磺酸基和羧基的组成，可以得出介电常数随磺酸基含量的增加而增大，力学性能和热性能随羧基含量的增加而提高的结论。所制备的SCPEN薄膜在电子存储材料中显示出潜在应用，这为SCPEN电学性能与其化学结构之间的相关性提供了见解。建立了结构-性能关系以拓宽功能化聚醚腈的应用。此外，具有丰富极性基团的SCPEN还可作为聚合物基体，增强与填料表面的相互作用，确保填料在基体中更好地分散。这为高介电材料的开发提供了参考。
