Abstract
A new monomer containing imide linkages, bis[4-(p-phenoxybenzoyl)-1,2-benzenedioyl]-N,N,N′,N′-4,4′-diaminodiphenyl ether (BPBDADPE), was prepared by the Friedel–Crafts reaction of bis(4-chloroformyl-1,2-benzenedioyl)-N,N,N′,N′-4,4′-diaminodiphenyl ether (BCBDADPE) with diphenyl ether (DPE). Novel poly(aryl ether ketone)s containing imide linkages in the main chains (PEK-I) were synthesized by electrophilic Friedel–Crafts solution copolycondensation of terephthaloyl chloride (TPC) with a mixture of DPE and BPBDADPE. The polymers were characterized by different physico-chemical techniques. The polymers with 10–40 mol% BPBDADPE are semicrystalline and had increased T gs over commercially available poly(ether ether ketone) (PEEK) and poly(ether ketone ketone) (PEKK) (70/30) due to the incorporation of imide linkages in the main chains. The polymers IV and V with 30–40 mol% BPBDADPE had not only high T gs of 182–183 °C, but also moderate T ms of 341–343 °C, having good potential for melt processing and exhibited high thermal stability and good resistance to common organic solvents.
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The authors thank the National Natural Science Foundation of China (Project 20764001) for financial support.
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Zhao, H., Xi, Q. & Cai, M. Synthesis and properties of novel poly(aryl ether ketone)s containing imide linkages in the main chains. Polym. Bull. 67, 1139–1152 (2011). https://doi.org/10.1007/s00289-010-0443-2
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DOI: https://doi.org/10.1007/s00289-010-0443-2