Abstract
AbstractAromatic poly(ether‐ketone‐amide)s were prepared by the palladium‐catalyzed polycondensation of aromatic dibromides containing ether ketone units, aromatic diamines, and carbon monoxide. Polymerizations were carried out in N,N‐dimethylacetamide (DMAc) in the presence of palladium catalyst, triphenylphosphine, and 1,8‐diazabicyclo [5,4,0]‐7‐undecene (DBU), and resulted in poly(ether‐ketone‐amide)s with inherent viscosities up to 0.82 dL/g under mild conditions. The polymers were quite soluble in strong acid, dipolar aprotic solvents, and pyridine. Thermogravimetry of the polymers showed excellent thermal stability, indicating that 10% weight losses of the polymers were observed in the range above 400°C in nitrogen atmosphere. The glass transition temperatures of the polymers were about 200°C, which are higher than those of poly(ether‐ketone) analogues. These polymers also showed good tensile strength and tensile modulus. © 1994 John Wiley & Sons, Inc.
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