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• W1981199514 abstract "Abstract A new monomer, N,N ′‐bis(4‐phenoxybenzoyl)‐ p ‐phenylenediamine (BPBPPD), was prepared by the condensation of p ‐phenylenediamine with 4‐phenoxybenzoyl chloride in N,N ‐dimethylacetamide (DMAc). Novel aromatic poly(ether amide amide ether ketone ketone)s (PEAAEKKs) were synthesized by electrophilic Friedel–Crafts solution copolycondensation of BPBPPD with a mixture of terephthaloyl chloride (TPC) and isophthaloyl chloride (IPC), over a wide range of TPC/IPC molar ratios, in the presence of anhydrous aluminum chloride and N ‐methylpyrrolidone (NMP) in 1,2‐dichloroethane (DCE). The influences of reaction conditions on the preparation of polymers were examined. The polymers obtained were characterized by different physico–chemical techniques such as FT‐IR, Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA), and wide angle X‐ray diffraction (WAXD). The polymers with 70–100 mol% IPC are semicrystalline and have remarkably increased T g s over commercially available poly(ether ether ketone) (PEEK) and poly(ether ketone ketone) (PEKK) due to the incorporation of amide groups in the main chain. The polymers with 70–80 mol% IPC had not only high T g s of 209–213°C, but also moderate T m s of 339–348°C, which are suitable for melt processing. The polymers with 70–80 mol% IPC had tensile strengths of 107.5–109.8 MPa, Young's moduli of 2.53–2.69 GPa, and elongations at break of 9–11% and exhibited high thermal stability and good resistance to organic solvents. Copyright © 2009 John Wiley & Sons, Ltd." @default.
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• W1981199514 date "2011-05-15" @default.
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• W1981199514 title "Synthesis of aromatic poly(ether amide amide ether ketone ketone)s by electrophilic Friedel-Crafts solution polycondensation" @default.
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• W1981199514 doi "https://doi.org/10.1002/pat.1609" @default.
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