Abstract
Aromatic polyamide dendrons (G0–G2) having amino groups on the periphery were prepared by divergent method. Reaction of G0 aromatic polyamide dendron with isonicotinoyl chloride hydrochloride gave polyamide dendron (G0-2Py) bearing two pyridine groups. The structures of polyamide dendrons were confirmed by IR, 1H, 13C NMR, MALDI-TOF mass spectroscopy. A hydrogen-bonded G0-2Py/poly(acrylic acid) (PAA) 1/2 complex was prepared by mixing G0-2Py with PAA in methanol, followed by removing the solvent. IR spectrum of G0-2Py/PAA 1/2 complex showed characteristic absorptions at 2550 and 1950 cm−1 due to hydrogen bonding. A glass transition temperature (Tg) of G0-2Py/PAA 1/2 complex was observed at 121 °C by DSC measurement, whereas Tgs of G0-2Py (137 °C) and PAA (87 °C) disappeared. Tg of the G0-2Py/PAA complex was dependent on the molar ratio ([Donor]/[Acceptor]). Maximum Tg at 121 °C was observed at a ratio of 1.
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Kouketsu, T., Kakimoto, Ma., Jikei, M. et al. Synthesis of Polyamide Dendrons Bearing Pyridine Groups as Multiple Hydrogen Bonding Parts on the Periphery. Polym J 36, 513–518 (2004). https://doi.org/10.1295/polymj.36.513
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DOI: https://doi.org/10.1295/polymj.36.513
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