Abstract
Two monomers, 4,4′-bis(4-phenoxybenzoyl)diphenyl (BPOBDP) and 2,6-diphenoxybenzonitrile (DPOBN), were conveniently prepared via simple synthetic procedures from commercially readily available materials. A series of novel poly(aryl ether ketone)s containing biphenylene moieties and pendant cyano groups were synthesized by the Friedel-Crafts acylation copolycondensation of isophthaloyl chloride (IPC) with a mixture of BPOBDP and DPOBN, over a wide range of BPOBDP/DPOBN molar ratios, in the presence of anhydrous AlCl3 and N-methylpyrrolidone (NMP) in 1,2-dichloroethane (DCE). The copolymers with 10–50 mol% DPOBN are semicrystalline and had higher T gs than those of the conventional PEEK and PEKK due to the incorporation of biphenylene moieties and pendant cyano groups. The copolymer VI with 50 mol% DPOBN had not only high T g of 168 °C, but also moderate T m of 333 °C, having good potential for melt processing. The copolymer VI had tensile strength of 103.4 MPa, Young’s modulus of 2.62 GPa, and elongation at break of 20.7 % and exhibited high thermal stability and excellent resistance to organic solvents.
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The authors thank the National Natural Science Foundation of China (Project 21264010) and the Natural Science Foundation of Jiangxi Province of China (Project 20132BAB203015) for financial support.
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Zhu, X., Yan, T., Xu, Q. et al. Synthesis and characterization of novel poly(aryl ether ketone)s containing biphenylene moieties and pendant cyano groups. J Polym Res 23, 24 (2016). https://doi.org/10.1007/s10965-015-0904-2
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DOI: https://doi.org/10.1007/s10965-015-0904-2