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- W2068333896 abstract "Three new series of poly(bisbenzoylamine imide)s, incorporating different aromatic diamines, have been synthesized. The polymers, obtained by the two-step procedure, have been characterized by DSC, TGA, X-ray, FTIR, and 1H-NMR methods. Thermal analysis showed glass transition temperatures in the range of 200°–250°C and decomposition at 430°–495°C. Most DSC runs displayed an exothermic event above Tg that was due to cold crystallization of the polymer molecules. A melting point was not observed. The new polymers, even before annealing, showed sharp X-ray diffraction patterns, evidence of semicrystallinity. The polymers, soluble in polar solvents, were analyzed by NMR in solution. Typical chemical shifts for the bisbenzoylamine protons were reported; FTIR spectra showed the characteristic imide peaks. Due to a near overlap of the carbonyl vibration of the imide group with the bisbenzoylamine carbonyl, the latter vibration was detected in only one series. © 1993 John Wiley & Sons, Inc." @default.
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- W2068333896 date "1993-05-10" @default.
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- W2068333896 title "New poly(bisbenzoylamine imide) series: Synthesis and characterization" @default.
- W2068333896 doi "https://doi.org/10.1002/app.1993.070480610" @default.
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