Abstract
A new monomer containing sulfone and imide linkages, bis{4-[4-(p-phenoxyphenylsulfonylphenoxy)benzoyl]-1,2-benzenedioyl}-N,N,N′,N′-4,4′-diaminodiphenyl ether (BPSPBDADPE), was prepared by the Friedel–Crafts reaction of bis(4-chloroformyl-1,2-benzenedioyl)-N,N,N′,N′-4,4′-diaminodiphenyl ether with 4,4′-diphenoxydiphenyl sulfone. Novel copolymers of poly(ether ketone ketone) and poly(ether ketone sulfone imide) were synthesized by electrophilic Friedel–Crafts solution copolycondensation of terephthaloyl chloride with a mixture of DPE and BPSPBDADPE. The polymers were characterized by different physico-chemical techniques. The polymers with 10–25 mol% BPSPBDADPE are semicrystalline and had increased T gs over commercially available PEEK and PEKK (70/30) due to the incorporation of sulfone and imide linkages in the main chains. The polymer IV with 25 mol% BPSPBDADPE had not only high T g of 194 °C but also moderate T m of 338 °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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Huang, B., Cheng, S., Xi, Q. et al. Synthesis and characterization of novel copolymers of poly(ether ketone ketone) and poly(ether ketone sulfone imide). Polym. Bull. 69, 661–673 (2012). https://doi.org/10.1007/s00289-012-0753-7
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DOI: https://doi.org/10.1007/s00289-012-0753-7